Data Sheet
August 1998
LC/LW010- and LC/LW015-Series Power Modules:
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
The LC/LW010- and LC/LW015-Series Power Modules use
adv anced, surface-mount technology and deliver high-quality,
compact, dc-dc conversion at an economical price.
Options
■
Remote on-off
■
Choice of on/off configuration
■
Short pin: 2.8 mm
±
0.25 mm (0.110 in.
±
0.010 in.)
■
Synchronization (cannot be ordered on units with
remote on/off)
■
Output voltage adjust: 90% to 110% of V
O, nom
(single outputs only)
■
Tight output voltage tolerance
Features
■
Low profile: 10.2 mm x 25.4 mm x 50.8 mm
(0.4 in. x 1.0 in. x 2.0 in.) with standoffs
(9.6 mm (0.38 in.) with standoffs recessed)
■
Wide input voltage range: 18 Vdc to 36 Vdc or
36 Vdc to 75 Vdc
■
Output current limiting, unlimited duration
■
Output overvoltage clamp
■
Undervoltage lockout
■
Input-to-output isolation: 1500 V
■
Operating case temperature range: –40
°
C to
+105
°
C
■
UL
* 1950 Recognized,
CSA
†
22.2 No. 950-95
Certified, IEC950, and VDE0805 Licensed
■
CE mark meets 73/23/EEC and 93/68/EEC
directives
‡
■
Within FCC and VDE Class A radiated limits
Applications
■
Telecommunications
■
Distributed power architectures
■
Private branch exchange (PBX)
■
Voice and data multiplexing
Description
The L Single- and Dual-Output-Series Power Modules are low-profile, dc-dc converters that operate over an
input voltage r ange of 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc and provide one or tw o precisely regulated outputs.
The outputs are isolated from the input, allowing versatile polarity configurations and grounding connections.
The modules have a maximum power rating of 10 W to 15 W and efficiencies of up to 84% for a 5 V output and
82% for a 3.3 V output. Built-in filtering for both input and output minimizes the need for external filtering.
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
CSA
is a registered trademark of Canadian Standards Association.
‡This product is intended for integ ration into end-use equipment. All the required procedures f or CE marking of end-use equipment should
be followed. (The CE mark is placed on selected products.)
2 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
* Maximum case temperature varies based on power dissipation. See derating curves, Figures 43—45, for details.
Electrical Specifications
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety and system protection, alw ays use an input line fuse. The
safety agencies require a normal-blow, dc fuse with a maximum rating of 5 A (see Safety Considerations section).
Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same
type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data for further information.
Parameter Device Symbol Min Typ Max Unit
Input Voltage:
Continuous
Transient (100 ms)
LC
LW
LW
V
I
V
I
V
I, trans
0
0
0
—
—
—
50
80
100
Vdc
Vdc
V
Operating Case Temperature
(See Derating Curves, Figures 43—45.) All T
C
–40 — 105*
°
C
Storage Temperature All T
stg
–55 — 125
°
C
I/O Isolation All — — — 1500 Vdc
Table 1. Input Specifications
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage LC
LW V
I
V
I
18
36 24
48 36
75 Vdc
Vdc
Maximum Input Current
(V
I
= 0 to V
I, max
; I
O
= I
O , max
; see Figures
1—4.)
LC
LW I
I, max
I
I, max
—
——
—1.6
800 A
mA
Inrush Transient All I
2
t— — 0.2 A
2
s
Input Reflected-ripple Current
(5 Hz to 20 MHz; 12
µ
H source imped-
ance; T
A
= 25
°
C; see Figure 33.)
All I
I
— 5 — mAp-p
Input Ripple Rejection (100 Hz—120 Hz) All — — 45 — dB
Lucent Technologies Inc. 3
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Electrical Specifications
(continued)
Table 2. Output Specifications
Parameter Device Code
or Suffix Symbol Min Typ Max Unit
Output Voltage Set Point
(V
I
= V
I, nom
; I
O
= I
O, max
; T
A
= 25
°
C) D
G*
F
A
B
C
AJ
BK
CL
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
1.92
—
3.17
4.85
11.52
14.40
4.75
–4.75
11.40
–11.40
14.25
–14.25
2.0
2.5
3.3
5.0
12.0
15.0
5.0
–5.0
12.0
–12.0
15.0
–15.0
2.08
—
3.43
5.20
12.48
15.60
5.25
–5.25
12.60
–12.60
15.75
–15.75
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Output Voltage
(Over all line, load, and temperature
conditions until end of life; see
Figures 35 and 37.)
D
G*
F
A
B
C
AJ
BK
CL
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
V
O1, set
V
O2, set
1.90
—
3.13
4.80
11.40
14.25
4.5
–4.5
10.80
–10.80
13.50
–13.50
—
2.5
—
—
—
—
—
—
—
—
—
—
2.10
—
3.47
5.25
12.60
15.75
5.5
–5.5
13.20
–13.20
16.50
–16.50
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Output Regulation
(See Figures 5—11):
Line (V
I
= V
I, min
to V
I, max
)
Load (I
O
= I
O, min
to I
O, max
)
Load (I
O
= I
O, min
to I
O, max
)
Temperature
(T
C
= –40
°
C to +85
°
C)
A, F, D, G*
B, C
Lx010 A, F, D, G*
B, C
Lx015 A, F, D, G*
B, C
A, F, D, G*
B, C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0.01
—
0.1
—
0.1
25
0.5
5
0.1
10
0.2
15
0.2
100
2.0
mV
%V
O
mV
%V
O
mV
%V
O
mV
%V
O
Output Ripple and Noise
(Across 2 x 0.47
µ
F ceramic capaci-
tors; see Figures 34 and 36.):
RMS
Peak-to-peak (5 Hz to 20 MHz)
A, D, F, G*
AJ, B, C
BK, CL
A, D, F, G*
AJ, B, C
BK, CL
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
30
35
50
100
120
150
mVrms
mVrms
mVrms
mVp-p
mVp-p
mVp-p
External Load Capacitance A, F, D, G*
B, C —
——
——
—1000
200
µ
F
µ
F
* For a 2.5 V output, use the 2 V output module (D code) with an output voltage trim pin (optional feature).
4 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Output Current
(At I
O
< I
O, min
, the modules may
exceed output ripple specifications,
but operation is guaranteed.)
Note:
On the Lx01xF, the output
voltage may exceed
specifications when
I
O
< I
O, min
.
Lx015D
Lx015F
Lx015A
Lx015B
Lx015C
Lx010D, G*
Lx010F
Lx010A
Lx010B
Lx010C
Lx010AJ
Lx010BK
Lx010CL
I
O
I
O
I
O
I
O
I
O
IO
IO
IO
IO
IO
IO1, IO2
IO1, IO2
IO1, IO2
0.35
0.25
0.15
0.12
0.10
0.2
0.15
0.1
0.08
0.06
0.1
0.06
0.05
—
—
—
—
—
—
—
—
—
—
—
—
—
3.0
3.0
3.0
1.25
1.0
2.0
2.42
2.0
0.83
0.67
1.0
0.42
0.33
A
A
A
A
A
A
A
A
A
A
A
A
A
Output Current-limit Inception
(VO = 90% VO, set; see Figures
12—14.)
Lx015D
Lx015F
Lx015A
Lx015B
Lx015C
Lx010D, G*
Lx010F
Lx010A
Lx010B
Lx010C
Lx010AJ
Lx010BK
Lx010CL
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO1, IO2
IO1, IO2
IO1, IO2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
7.5
6.5
5
3.1
2.5
7.0
5
4
2.5
2
4.0
2.5
2.5
A
A
A
A
A
A
A
A
A
A
A
A
A
Output Short-circuit Current
(VO = 0.25 V) Lx015D
Lx015F
Lx015A
Lx015B
Lx015C
Lx010D, G*
Lx010F
Lx010A
Lx010B
Lx010C
Lx010AJ
Lx010BK
Lx010CL
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO1, IO2
IO1, IO2
IO1, IO2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8.5
8.5
7.5
4.5
4.5
8
7.5
6
3.5
3.5
6.0
3.5
3.5
A
A
A
A
A
A
A
A
A
A
A
A
A
* For a 2.5 V output, use the 2 V output module (D code) with an output voltage trim pin (optional feature).
Table 2. Output Specifications (continued)
Parameter Device Code
or Suffix Symbol Min Typ Max Unit
Electrical Specifications (continued)
Lucent Technologies Inc. 5
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Efficiency
(VI = VI, nom; IO = IO, max; T A = 25 °C;
see Figures 15—28, 35, and 37.)
LC015D
LC015F
LC015A
LC015B, C
LC010D, G*
LC010F
LC010A, B, C
LC010AJ, BK, CL
LW015D
LW015F
LW015A
LW015B, C
LW010D, G*
LW010F
LW010A, B, C
LW010AJ, BK, CL
η
η
η
η
η
η
η
η
η
η
η
η
η
η
η
η
64
74
77
73
65
71
75
75
66
76
79
75
67
73
77
77
67
77
80
76
68
75
79
78
69
79
82
78
70
76
81
80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
Efficiency
(VI = VI, nom; IO = 2 A; TA = 25 °C;
see Figures 15, 18, 22, and 25.)
LC015F
LC015A
LW015F
LW015A
η
η
η
η
—
—
—
—
79
82
82
84
—
—
—
—
%
%
%
%
Switching Frequency All — — 265 — kHz
Dynamic Response
(for duals: IO1 or IO2 = IO, max;
∆IO/∆t = 1A/10 µs; VI = VI, nom;
TA = 25 °C; see Figures 29 and 30.):
Load Change from IO = 50% to 75%
of IO, max:
Peak Deviation
Settling Time
(VO < 10% of peak deviation)
Load Change from IO = 50% to 25%
of IO, max:
Peak Deviation
Settling Time
(VO < 10% of peak deviation)
All
All
All
All
—
—
—
—
—
—
—
—
2
0.8
2
0.8
—
—
—
—
%VO, set
ms
%VO, set
ms
* For a 2.5 V output, use the 2 V output module (D code) with an output voltage trim pin (optional feature).
Table 3. Isolation Specifications
Parameter Min Typ Max Unit
Isolation Capacitance — 600 — pF
Isolation Resistance 10 — — MΩ
Table 2. Output Specifications (continued)
Parameter Device Code
or Suffix Symbol Min Typ Max Unit
Electrical Specifications (continued)
6 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Electrical Specifications (continued)
Table 4. General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (IO = 80% of IO, max; TC = 40 °C):
Lx010
Lx015 —
—7,800,000
5,400,000 —
—hours
hours
Weight — — 28.3 (1.0) g (oz.)
Hand Soldering
(soldering iron 3 mm (0.125 in.) tip, 425 °C) — — 12 s
Table 5. Feature Specifications
Parameter Device Code
or Suffix Symbol Min Typ Max Unit
Remote On/Off Signal Interface (optional):
(VI = 0 V to VI, max; open collector or
equivalent compatible; signal referenced to
VI(–) terminal. See Figure 38 and Feature
Descriptions.):
Positive Logic— Device Code Suffix “4”:
Logic Low—Module Off
Logic High—Module On
Negative Logic— Device Code Suffix “1”:
Logic Low—Module On
Logic High—Module Off
Module Specifications:
On/Off Current—Logic Low
On/Off Voltage:
Logic Low
Logic High (Ion/off = 0)
Open Collector Switch Specifications:
Leakage Current During Logic High
(Von/off = 10 V)
Output Low Voltage During Logic Low
(Ion/off = 1 mA)
All
All
All
All
All
Ion/off
Von/off
Von/off
Ion/off
Von/off
—
–0.7
—
—
—
—
—
—
—
—
1.0
1.2
10
50
1.2
mA
V
V
µA
V
Turn-on Delay and Rise Times
(At 80% of IO, max; T A = 25 °C; see Figures 31
and 32.):
Case 1: On/Off Input Is Set for Unit On and
then Input Power Is Applied (delay from
point at which VI = VI, min until VO = 10% of
VO, nom).
Case 2: Input Power Is Applied for at Least
One Second, and then the On/Off Input Is
Set to Turn the Module On (delay from
point at which on/off input is toggled until
VO = 10% of VO, nom).
Output Voltage Rise Time
(time for VO to rise from 10% of VO, nom to
90% of VO, nom)
Output Voltage Overshoot
(at 80% of IO, max; T A = 25 °C)
All
All
All
All
Tdelay
Tdelay
Trise
—
—
—
—
—
5
1
0.2
—
20
10
5
5
ms
ms
ms
%
Data Sheet
August 1998
Lucent Technologies Inc. 7
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Electrical Specifications (continued)
Output Voltage Set-point Adjustment Range
(optional: single outputs only) A, B, F
C
D
—
—
—
90
90
90
—
—
—
110
100
125
%VO, nom
%VO, nom
%VO, nom
Output Overvoltage Clamp
(VO, clamp may be set higher on units with out-
put voltage set-point adjustment option.)
D
F
A
B
C
AJ
BK
CL
VO, clamp
VO, clamp
VO, clamp
VO, clamp
VO, clamp
VO1, clamp
VO2, clamp
VO1, clamp
VO2, clamp
VO1, clamp
VO2, clamp
2.60
3.7
5.6
13.2
16.5
5.6
–5.6
13.2
–13.2
16.5
–16.5
—
—
—
—
—
—
—
—
—
—
—
4.0
5.7
7.0
16.0
21.0
7.0
–7.0
18.0
–18.0
21.0
–21.0
V
V
V
V
V
V
V
V
V
V
V
Undervoltage Lockout LCxxx
LWxxx Vuvlo
Vuvlo 11
20 14
27 —
—V
V
Table 5. Feature Specifications (continued)
Parameter Device Code
or Suffix Symbol Min Typ Max Unit
Characteristic Curves
8-1785(C)
Figure 1. LC010 Input Current vs. Input Voltage at
IO = IO, max and TC = 25 °C
8-1786(C)
Figure 2. LC015 Input Current vs. Input Voltage at
IO = IO, max and TC = 25 °C
5 10 15 2520 30
0.0
0.6
INPUT VOLTAGE, V
I
(
V
)
0.4
0.3
0.5
35
0.8
4
0
0
0.7
0.2
0.1
0.9
INPUT CURRENT, I
I
(A)
0.4
0.0
0.8
1.2
1.4
0.2
0.6
1.0
5 10 15 3520 400 3025
INPUT VOLTAGE, V
I
(V)
INPUT CURRENT, I
I
(A)
8Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Characteristics Curves (continued)
8-1787(C)
Figure 3. LW010 Input Current vs. Input Voltage at
IO = IO, max and TC = 25 °C
8-1788(C)
Figure 4. LW015 Input Current vs. Input Voltage at
IO = IO, max and TC = 25 °C
8-1789(C)
Figure 5. Lx010x/Lx015x Single-Output Load
Regulation, Normalized Output Voltage
vs. Normalized Output Current at
TC = 25 °C
8-1790(C)
Note: Output2 has characteristics similar to output1 when
IO1 = 0.5 A and IO2 varies.
Figure 6. Lx010AJ Typical Load Regulation of
Output1 with Fixed IO2 = 0.5 A at
TC = 25 °C
8-1791(C)
Note: Output2 has characteristics similar to output1 when
IO2 = 0.1 A and IO1 varies.
Figure 7. Lx010AJ Typical Cross Regulation,
VO1 vs. IO2 with Fixed IO1 = 0.1 A at
TC = 25 °C
10 20 30 5040 60
0.00
0.30
INPUT VOLTAGE, V
I
(
V
)
0.20
0.15
0.25
70
0.40
8
0
0
0.35
0.10
0.05
0.45
0.50
INPUT
C
URRENT, I
I
(A)
0.2
0.0
0.4
0.6
0.7
0.1
0.3
0.5
10 20 30 7040 800 6050
INPUT VOLTAGE, V
I
(V)
INPUT CURRENT, I
I
(A)
0.1 0.2 0.6 0.7 0.8 0.9
0.997
1.002
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
1.000
0.999
1.001
1.00.0
1.003
0.998
0.4 0.50.3
V
I
= LOW LINE
V
I
= HIGH LINE
V
I
= NOM LINE
NORMALIZED OUTPUT VOLTAGE (V
O
/V
O
,
set
)
0.1 0.2 0.3 0.4 0.5 0.6
4.90
5.05
OUTPUT CURRENT 1, I
O1
(
A
)
5.00
5.10
1.0
0.0
4.95
0.7
5.15
0.8 0.9
V
I
= HIGH LINE
V
I
= LOW LINE
V
I
= NOM LINE
OUTPUT VOLTAGE 1, V
O1
(V)
0.1 0.2 0.6 0.7 0.8 0.9
4.95
5.20
OUTPUT CURRENT 2, I
O2
(
A
)
5.10
5.05
5.15
1.00.0
5.25
5.00
0.4 0.50.3
V
I
= LOW LINE
V
I
= NOM LINE
V
I
= HIGH LINE
OUTPUT VOLTAGE 1, V
O1
(V)
9
Lucent Technologies Inc.
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Characteristics Curves (continued)
8-1792(C)
Note: Output2 has characteristics similar to output1 when
IO2 = 1.0 A and IO1 varies.
Figure 8. Lx010AJ Typical Cross Regulation,
VO1 vs. IO2 with Fixed IO1 = 1.0 A at
TC = 25 °C
8-1793(C)
Note: Output2 has characteristics similar to output1 when
IO1 = (0.5 * IO, max) and IO2 varies.
Figure 9. Lx010BK, CL Load Regulation of Output1
with Fixed IO2 = 0.5 * IO, max at TC = 25 °C,
Normalized VO1 vs. Normalized Current IO1
8-1794(C)
Note: Output2 has characteristics similar to output1 when
IO2 = IO, min and IO1 varies.
Figure 10. Lx010BK, CL Typical Cross Regulation,
Normalized VO1 vs. Normalized IO2 with
Fixed IO1 = IO, min at TC = 25 °C
8-1795(C)
Note: Output2 has characteristics similar to output1 when
IO2 = IO, max and IO1 varies.
Figure 11. Lx010BK, CL Typical Cross Regulation,
Normalized VO1 vs. Normalized IO2 with
Fixed IO1 = IO, max at TC = 25 °C
0.1 0.2 0.3 0.5 0.6 0.7
4.75
4.90
OUTPUT CURRENT 2, I
O2
(
A
)
4.85
4.95
1.00.0
4.80
0.8 0.9
5.00
0.4
OUTPUT VOLTAGE 1, V
O1
(V)
V
I
= HIGH LINE
V
I
= NOM LINE
V
I
= LOW LINE
0.15 0.30 0.45 0.75 0.90
0.990
1.013
NORMALIZED OUTPUT CURRENT
(
I
O1
/I
O1
,
max
)
1.010
1.016
1.0
5
0.0
1.006
1.020
0.60
1.003
1.000
0.996
0.993 V
I
= HIGH LINE
I
O
= I
O
,
max
I
O
= I
O
,
min
V
I
= LOW LINE
V
I
= NOM LINE
NORMALIZED OUTPUT VOLTAGE 1 (V
O1
/V
O1
,
set
)
1.020
1.003
0.996
1.010
1.016
1
.
023
1.000
1.007
1.013
0.15 0.45 0.60 0.75 0.90 1.050.0 0.30
NORMALIZED OUTPUT CURRENT 2 (I
O2
/I
O2
,
max
)
V
I
= NOM LINE
V
I
= LOW LINE
V
I
= HIGH LINE
I
O
= I
O
,
min
I
O
= I
O
,
max
NORMALIZED
OUTPUT VOLTAGE 1 (V
O1
/V
O1
,
set
)
1.000
0.966
0.953
0.980
0.993
1
.
006
0.960
0.973
0.987
0.15 0.45 0.60 0.75 0.90 1.050.0 0.30
NORMALIZED OUTPUT CURRENT 2 (IO2/IO2, max)
NORMALIZED
OUTPUT VOLTAGE 1 (VO1/VO1, set)
VI = LOW LINE
VI = NOM LINE
VI = HIGH LINE
IO = IO, max
IO = IO, min
10 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Characteristics Curves (continued)
8-1796(C)
Figure 12. Lx010x/Lx015x Single-Output
Normalized Output Current vs.
Normalized Output Voltage at
TC = 25 °C
8-1797(C)
Note: Output2 has characteristics similar to output1 when
output1 is set to IO, min.
Figure 13. Lx010xx Dual-Output Normalized Output
Current vs. Normalized Output Voltage at
TC = 25 °C with Other Output at IO, min
8-1798(C)
Note: Output2 has characteristics similar to output1 when
output1 is set to IO, max.
Figure 14. Lx010xx Dual-Output Normalized Output
Current vs. Normalized Output Voltage at
TC = 25 °C with Other Output at
IO = IO, max
8-1800(C)
Figure 15. LC015A Typical Efficiency vs. Output
Current at TC = 25 °C
0.25 0.50 0.75 1.00
0.0
0.8
OUTPUT CURRENT NORMALIZED TO I
O
, max
(
I
O
/I
O
,
max
)
0.6
1.0
2.00
0.00
0.4
1.25
1.2
1.50 1.75
0.2
NORMALIZED OUTPUT VOLTAGE (V
O
/V
O
,
set
)
V
I
= LOW LINE
V
I
= NOM LINE
V
I
= HIGH LINE
0.5 1.0 1.5 2.0 2.5 3.0
0.0
0.5
NORMALIZED OUTPUT CURRENT 1
WITH OUTPUT CURRENT 2
SET TO I
O
, min
(
I
O1
/I
O1
,
max
)
4.50.0 3.5 4.0
1.0
V
I
= NOM LINE
V
I
= LOW LINE
V
I
= HIGH LINE
NORMALIZED
OUTPUT VOLTAGE 1 (V
O1
/V
O1
,
set
)
0.0
1.0
0.5
0.5 1.0 1.5 3.52.0 4.00.0 3.02.5
NORMALIZED OUTPUT CURRENT 1
WITH OUTPUT CURRENT 2
SET TO I
O
, max (I
O1
/I
O1
,
max
)
V
I
= NOM LINE
V
I
= LOW LINE
V
I
= HIGH LINE
NORMALIZED OUTPUT VOLTAGE 1 (V
O1
/V
O1
,
set
)
0.5 1.0 1.5 2.0
70
78
OUTPUT CURRENT, I
O
(
A
)
76
80
0.0
74
2.5
86
3.0
EFFICIENCY, (%)
82
84
72
V
I
= 27 V
V
I
= 20 V
V
I
= 18 V
V
I
= 36 V
11
Lucent Technologies Inc.
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Characteristics Curves (continued)
8-1801(C)
Figure 16. LC015B, C Typical Efficiency vs.
Normalized Output Current at TC = 25 °C
8-2049(C)
Figure 17. LC010D and LC015D Typical Efficiency
vs. Output Current at TC = 25 °C
8-1802(C)
Figure 18. LC015F Typical Efficiency vs. Output
Current at TC = 25 °C
8-1803(C)
Figure 19. LC010A, B, C Typical Efficiency vs.
Normalized Output Current at TC = 25 °C
8-1804(C)
Figure 20. LC010F Typical Efficiency vs. Output
Current at TC = 25 °C
8-1805(C)
Figure 21. LC010AJ, BK, CL Typical Efficiency vs.
Normalized Output Current at TC = 25 °C
0.16 0.32 0.48 0.64
60
75
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
70
80
0.0
65
0.80
85
0.96
EFFICIENCY, (%)
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
0.5 1 21.5 2.5 30
60
70
68
66
58
72
64
62
OUTPUT CURRENT, I
O
(
A
)
EFFICIENCY, (%)
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
0.5 1.0 1.5 2.0 2.5 3.0
70
80
76
74
78
0.0
82
72
OUTPUT CURRENT, I
O
(
A
)
EFFICIENCY, (%)
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
0.1 0.2 0.4 0.5 0.6 0.7
70
76
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
74
78
1.00.0
72
0.8 0.9
80
82
0.3
EFFICIENCY, (%)
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
75
50
40
60
70
80
45
55
65
0.5 1.0 1.5 2.0 2.50.0
OUTPUT CURRENT, I
O
(
A
)
EFFICIENCY, (%)
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
0.23 0.35 0.47 0.710.59 0.83
60
72
NORMALIZED OUTPUT CURRENT,
I
O1
= I
O2
[
(
I
O1
+ I
O2
)
/
(
I
O1
,
max
+ I
O2
,
max
)
]
68
66
70
0.95
76
0.10
EFFICIENCY, (%)
74
64
62
78
80
V
I
= 36 V
V
I
= 24 V
V
I
= 18 V
1212 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Characteristics Curves (continued)
8-1864(C)
Figure 22. LW015A Typical Efficiency vs. Output
Current at TC = 25 °C
8-1863(C)
Figure 23. LW015B, C Typical Efficiency vs.
Normalized Output Current at TC = 25 °C
8-1862(C)
Figure 24. LW010D, 015D Typical Efficiency vs.
Output Current at TC = 25 °C
8-1861(C)
Figure 25. LW015F Typical Efficiency vs. Output
Current at TC = 25 °C
8-1860(C)
Figure 26. LW010A, B, C Typical Efficiency vs.
Normalized Output Current at TC = 25 °C
8-1859(C)
Figure 27. LW010F Typical Efficiency vs. Output
Current at TC = 25 °C
1.0 1.5 2.0 2.5
60
85
OUTPUT CURRENT, I
O
(
A
)
75
80
EFFICIENCY, (%)
0.0 0.5 3.0
90
70
65
V
I
= 48 V
V
I
= 75 V
V
I
= 36 V
0.33 0.5 0.66 0.83
70
80
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
76
78
0.05 0.19 1.0
82
74
72
V
I
= 48 V
V
I
= 75 V
EFFICIENCY, (%)
V
I
= 36 V
1.0 1.5 2.0 2.5
10
60
OUTPUT CURRENT, IO
(
A
)
40
50
EFFICIENCY, (%)
0.0 0.5 3.0
80
30
20
VI = 48 V
VI = 75 V
VI = 36 V
70
1.0 1.5 2.0 2.5
60
75
OUTPUT CURRENT, IO
(
A
)
65
70
EFFICIENCY, (%)
0.0 0.5 3.0
85
VI = 48 V
VI = 75 V
VI = 36 V
80
0.20 0.43 0.57 0.71
70
78
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
74
76
EFFICIENCY, (%)
0.0 0.14 1.0
82
80
72
0.86
V
I
= 48 V
V
I
= 75 V
V
I
= 36 V
1.0 1.5 2.0 2.5
60
76
OUTPUT CURRENT, IO
(
A
)
72
74
EFFICIENCY, (%)
0.0 0.5
80
78
62
VI = 48 V
VI = 75 V
VI = 36 V
64
66
68
70
Lucent Technologies Inc. 13
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Characteristics Curves (continued)
8-1858(C)
Figure 28. LW010AJ, BK, CL Typical Efficiency vs.
Normalized Output Current at TC = 25 °C
8-1857(C)
Figure 29. Single-Output Typical Output Voltage for
Step Load Change from 50% to 75% of
IO = IO, max
8-1856(C)
Figure 30. Single-Output Typical Output Voltage for
Step Load Change from 50% to 25% of
IO = IO, max
8-1806(C)
Figure 31. Typical Output Voltage Start-Up when
Input Voltage Is Applied; IO = 80% of
IO, max, VI = Nominal Line
8-1807(C).a
Figure 32. Typical Output Voltage Start-Up when
Signal Is applied to Remote On/Off;
IO = 80% of IO, max
0.2 0.3 0.9 1.0
60
75
NORMALIZED OUTPUT CURRENT,
I
O1
= I
O2
[
(
I
O1
+ I
O2
)
/
(
I
O1
,
max
+ I
O2
,
max
)
]
65
70
EFFICIENCY, (%)
0 0.1
85
80
0.4 0.5 0.6 0.7 0.8
V
I
= 48 V
V
I
= 75 V
V
I
= 36 V
TIME, t
(
100
µ
s/div
)
NORMALIZED
OUTPUT VOLTAGE (V
O
/V
O
,
set
)
1.0
0.99
0.75
0.50
LOAD CURRENT
(I
O
/I
O
,
max
)
1.01
TIME, t
(
100
µ
s/div
)
NORMALIZED
OUTPUT VOLTAGE(V
O
/V
O
,
set
)
0.99
1.0
1.01
0.50
0.25
LOAD CURRENT
(I
O
/I
O
,
max
)
TIME, t (2 ms/div)
1.0
0
1.0
0
NORMALIZED OUTPUT VOLTAGE;
V
O
/V
O
,
set
SINGLE OUTPUTS,
V
O1
/V
O1
,
set
DUAL OUTPUTS
INPUT VOLTAGE
(V
I
/V
I
,
nom
)
TIME, t
(
1 ms/div
)
1.0
0.0
4.0
2.0
0
NORMALIZED
OUTPUT VOLTAGE;
V
O
/V
O
,
set
SINGLE OUTPUTS,
V
O1
/V
O1
,
set
DUAL OUTPUTS
REMOTE ON/OFF,
V
ON/OFF
(V)
(2 V/div)
1414 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Test Configurations
8-203(C)
Note: Input reflected-ripple current is measured with a simulated
source impedance of 12 µH. Capacitor Cs offsets possible
battery impedance. Current is measured at the input of the
module.
Figure 33. Input Reflected-Ripple Test Setup
8-513(C).g
Note: Use two 0.47 µF ceramic capacitors. Scope measurement
should be made using a BNC socket. Position the load
between 50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 34. Peak-to-Peak Output Noise
Measurement Test Setup for Single
Outputs
8-204(C)
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 35. Output Voltage and Efficiency
Measurement Test Setup for Single
Outputs
8-808(C).d
Note: Use four 0.47 µF ceramic capacitors. Scope measurement
should be made using a BNC socket. Position the load
between 50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 36. Peak-to-Peak Output Noise
Measurement Test Setup for Dual
Outputs
8-863(C).a
Note: All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 37. Output Voltage and Efficiency
Measurement Test Setup for Dual
Outputs
TO OSCILLOSCOPE
12 µH
C
S
220 µF
IMPEDANCE < 0.1 Ω
@ 20 °C, 100 kHz
V
I
(+)
V
I
(–)
BATTERY 33 µF
CURRENT
PROBE
L
TEST
V
O
(+)
V
O
(–)
0.47 µF RESISTIVE
LOAD
SCOPE
COPPER STRIP
0.47 µF
V
I
(+)
V
I
(–)
V
O
(+)
V
O
(–)
I
I
I
O
SUPPLY
CONTACT RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
ηVO(+) VO(–)–[]IO
VI(+) VI(–)–[]II
------------------------------------------------
100
×=
V
O1
(+)
V
O2
(–)
0.47 µF
0.47 µF
SCOPE
COPPER STRIP
SCOPE
COM
R
LOAD1
R
LOAD2
0.47 µF
0.47 µF
V
I
(+)
I
I
I
O
SUPPLY
CONTACT
RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
V
I
(–)
V
O1
V
O2
COM
LOAD
η
VOJ COM–[]IOJ
J1=
2
∑
VI+() VI–()–[]II
---------------------------------------------------x100=
Lucent Technologies Inc. 15
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power mod-
ule. If the source inductance exceeds 4 µH, a 33 µF
electrolytic capacitor (ESR < 0.7 Ω at 100 kHz)
mounted close to the power module helps ensure
stability of the unit.
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e.,
UL
1950,
CSA
22.2 No. 950-95, EN60950, and
IEC950.
For the converter output to be considered meeting the
requirements of saf ety extr a-low v oltage (SELV), one of
the following must be true of the dc input:
■All inputs are SELV and floating, with the output also
floating.
■All inputs are SELV and grounded, with the output
also grounded.
■Any non-SELV input must be provided with rein-
f orced insulation from an y other hazardous voltages,
including the ac mains, and must have a SELV reli-
ability test performed on it in combination with the
converters.
The power module has extra-low v oltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A normal-blow fuse in the ungrounded lead.
Feature Descriptions
Output Overvoltage Clamp
The output overvoltage clamp consists of control cir-
cuitry, independent of the primary regulation loop, that
monitors the voltage on the output terminals. This con-
trol loop has a higher voltage set point than the primary
loop (see Feature Specifications table). In a fault condi-
tion, the overvoltage clamp ensures that the output
voltage does not exceed VO, clamp, max. This provides a
redundant voltage-control that reduces the risk of
output overvoltage.
Current Limit
To provide protection in a fault (output overload) condi-
tion, the unit is equipped with internal current-limiting
circuitry and can endure current limiting for an unlim-
ited duration. At the point of current-limit inception, the
unit shifts from voltage control to current control. If the
output voltage is pulled very low during a severe fault,
the current-limit circuit can exhibit either foldback or
tailout characteristics (output-current decrease or
increase). The unit operates normally once the output
current is brought back into its specified range.
Remote On/Off (Optional)
Two remote on/off options are available. Positive logic,
device code suffix “4”, remote on/off turns the module
on during a logic-high voltage on the remote ON/OFF
pin, and off during a logic low. Negative logic, device
code suffix “1”, remote on/off turns the module off dur-
ing a logic high and on during a logic low.
To turn the power module on and off, the user must
supply a switch to control the voltage between the
on/off terminal and the VI(–) terminal (Von/off). The
switch may be an open collector or equivalent (see
Figure 38). A logic low is Von/off = –0.7 V to +1.2 V. The
maximum Ion/off during a logic low is 1 mA. The switch
should maintain a logic-low voltage while sinking 1 mA.
During a logic high, the maximum Von/off generated by
the power module is 10 V. The maximum allowable
leakage current of the switch at Von/off = 10 V is 50 µA.
The module has internal capacitance to reduce noise
at the ON/OFF pin. Additional capacitance is not gen-
erally needed and may degrade the start-up character-
istics of the module.
8-758(C).a
Figure 38. Remote On/Off Implementation
+
Ion/off
–
Von/off
REMOTE
ON/OFF
VI(+)
VI(–)
1616 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Feature Descriptions (continued)
Output Voltage Adjustment (Optional on
Single-Output Units)
Output voltage set-point adjustment allows the user to
increase or decrease the output voltage set point of a
module. This is accomplished by connecting an exter-
nal resistor between the TRIM pin and either the VO(+)
or V O(–) pins. With an external resistor between the
TRIM and VO(+) pins (Radj-down), the output voltage set
point (VO, adj) decreases (see Figure 39). The following
equation determines the required external resistor
value to obtain an output v oltage change from V O , nom to
VO, adj:
where Radj-down is the resistance value connected
between TRIM and V O(+), and G, H, and L are defined
in the following table.
8-715(C).e
Figure 39. Circuit Configuration to Decrease
Output V oltage
With an e xternal resistor connected between the TRIM
and V O(–) pins (Radj-up), the output voltage set point
(VO, adj) increases (see Figure 40). The following equa-
tion determines the required external resistor value to
obtain an output voltage from VO, nom to VO, adj:
where Radj-up is the resistance value connected
between TRIM and V O (–), and the values of G, H, K,
and L are shown in the following table:
The combination of the output voltage adjustment
and the output voltage tolerance cannot exceed 110%
(125% f or the D) of the nominal output voltage between
the V O(+) and VO(–) terminals.
8-715(C).d
Figure 40. Circuit Configuration to Increase Output
Voltage
The L-Series power modules have a fixed current-limit
set point. Therefore, as the output voltage is adjusted
down, the available output power is reduced. In addi-
tion, the minimum output current is a function of the
output voltage. As the output voltage is adjusted down,
the minimum required output current can increase
(i.e., minimum power is constant).
Synchronization (Optional)
With external circuitry, the unit is capable of synchroni-
zation from an independent time base with a switching
rate of 256 kHz. Other frequencies may be available;
please consult the factory for application guidelines
and/or a description of the external circuit needed to
use this feature.
Radj-down VO adj,L–()G
VO nom,VO adj,–()
--------------------------------------- H–Ω=
V
I
(+)
V
I
(–)
V
O
(+)
V
O
(–)
TRIM
R
adj-down
R
LOAD
Radj-up GL
VO adj,L–()K–[]
-----------------------------------------H–
Ω=
GHKL
Lx010, 5A 5110 2050 2.5 2.5
Lx010, 5B 10,000 5110 9.5 2.5
Lx010, 5C 10,000 5110 NA 2.5
Lx010, 5D 5110 2050 0.76 1.23
Lx010, 5F 5110 2050 0.75 2.5
V
I
(+)
V
I
(–)
V
O
(+)
V
O
(–)
TRIM
R
adj-up
R
LOAD
Lucent Technologies Inc. 17
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations
The power module operates in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat-dissipating components inside the unit are ther-
mally coupled to the case. Heat is removed by conduc-
tion, convection, and radiation to the surrounding
environment. Proper cooling can be verified by mea-
suring the case temperature. The case temperature
(TC) should be measured at the position indicated in
Figures 41 and 42.
8-1363(C).b
Note: Dimensions are in millimeters and (inches). Pin locations are
for reference only.
Figure 41. LW010 and LC010 Case Temperature
Measurement Location
8-1363(C).c
Note: Dimensions are in millimeters and (inches). Pin locations are
for reference only.
Figure 42. LW015 and LC015 Case Temperature
Measurement Location
Note that the views in Figures 41 and 42 are of the sur-
face of the modules. The temperatures at these loca-
tions should not exceed the maximum case
temperature indicated on the derating curve. The out-
put power of the module should not exceed the rated
power for the module as listed in the Ordering Informa-
tion table.
Heat T ransfer Characteristics
Increasing airflow over the module enhances the heat
transf er via conv ection. Figures 43 through 45 show the
maximum power that can be dissipated by the module
without exceeding the maximum case temperature ver-
sus local ambient temperature (TA) for natural convec-
tion through 3.0 ms–1 (600 ft./min.).
Systems in which these power modules are used typi-
cally generate natural convection airflow rates of
0.25 ms–1 (50 ft./min.) due to other heat dissipating
components in the system. Therefore, the natural con-
vection condition represents airflow rates of approxi-
mately 0.25 ms–1 (50 ft./min.). Use of Figure 43 is
shown in the following example.
Example
What is the minimum airflow necessary for an LW010A
operating at 48 V, an output current of 2.0 A, and a
maximum ambient temperature of 91 °C?
Solution:
Given: VI = 48 V, IO = 2.0 A (IO, max), TA = 91 °C
Determine PD (Figure 58): PD = 2.5 W
Determine airflow (Figure 43): v = 2.0 ms–1
(400 ft./min.)
8-1375(C).a
Figure 43. LW010/LC010 Forced Convection Power
Derating; Either Orientation
dc-dc POWER MODULE
15.2
(0.6)
+
–
+
–
OUT
IN LW010/LC010
10.2
(0.4)
dc-dc POWER MODULE
5.1
(0.2)
+
–
+
–
OUT
IN LW015/LC015
5.1 (0.2)
UNITS POWER DISSIPATION, PD (W)
50 60 70 80 90 100 11040 45 55 65 75 85 95 105
0
3.5
1.5
1
0.5
2
2.5
3
MAX AMBIENT TEMPERATURE
,
TA
(
°C
)
MAXIMUM CASE TEMPERATURE
2.0 ms –1 (400 ft./min.)
3.0 ms –1 (600 ft./min.)
1.0 ms –1 (200 ft./min.)
NATURAL CONVECTION
1818 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations (continued)
8-1377(C).a
Figure 44. LC015 Forced Convection Power
Derating; Either Orientation
8-1376(C).a
Figure 45. LW015 Forced Convection Power
Derating; Either Orientation
8-1382(C)
Note: The power dissipation of this unit is shown at TC = TC, max
because the efficiency of this power module drops at high
temperatures.
Figure 46. LC015A Power Dissipation at Maximum
Case Temperature
8-1808(C)
Figure 47. LC015B, C Typical P o wer Dissipation vs.
Normalized Output Current at TC = 25 °C
UNITS POWER DISSIPATION, P
D
(W)
10 20 30 40 50 60 700 80 90 100 110 120
0
3.5
1.5
1
0.5
2
4.5
4
2.5
3
5
MAX AMBIENT TEMPERATURE
,
T
A
(
°C
)
NATURAL CONVECTION
3.0 ms
–1
(600 ft./min.)
1.0 ms
–1
(200 ft./min.)
2.0 ms
–1
(400 ft./min.)
MAXIMUM CASE TEMPERATURE
UNITS POWER DISSIPATION, PD (W)
50 60 70 80 90 100
0
3.5
1.5
1
0.5
2
4.5
4
2.5
3
5
MAX AMBIENT TEMPERATURE
,
TA
(
°C
)
11040
MAXIMUM CASE TEMPERATURE
2.0 ms –1 (400 ft./min.)
3.0 ms –1 (600 ft./min.)
1.0 ms –1 (200 ft./min.)
NATURAL CONVECTION
3.5
2.5
2.0
1.5
0.0 0.5 1.0 1.5 2.0 2.5
0.0
4.0
OUTPUT CURRENT, IO (A)
0.5
3.0
3.0
1.0
POWER DISSIPATION, PD (W)
VI = 20 V
VI = 27 V
VI = 36 V
VI = 18 V
4.5
0.16 0.32 0.48 0.64 0.80
0
3
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
2
4
0.00
1
0.96
5
6
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
POWER DISSIPATION, P
D
(W)
Lucent Technologies Inc. 19
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations (continued)
8-1809(C)
Figure 48. LC010D, 015D Typical P o wer Dissipation
vs. Output Current at TC = 25 °C
8-1810(C)
Note: The power dissipation of this unit is shown at TC = TC, max
because the efficiency of this power module drops at high
temperatures.
Figure 49. LC015F Typical Power Dissipation vs.
Output Current at Maximum Case
Temperature
8-1811(C)
Figure 50. LC010A, B, C Typical Power Dissipation
vs. Normalized Output Current at
TC = 25 °C
8-1812(C)
Figure 51. LC010F Typical Power Dissipation vs.
Output Current at TC = 25 °C
8-1813(C)
Figure 52. LC010AJ, BK, CL Typical Power
Dissipation vs. Normalized Output
Current at TC = 25 °C
3.5
1.0
0.0
2.0
3.0
4
.
0
0.5
1.5
2.5
0.5 1.0 1.5 2.0 2.5 3.00.0
OUTPUT CURRENT, I
O
(
A
)
POWER DISSIPATION, P
D
(W)
V
I
= 18 V
V
I
= 36 V
V
I
= 27 V
1.0
0.0
2.0
3.0
3.5
0.5
1.5
2.5
0.5 1.0 1.5 2.0 2.5 3.00.0
POWER DISSIPATION, P
D
(W)
V
I
= 36 V
V
I
= 27 V
V
I
= 18 V
OUTPUT CURRENT, I
O
(
A
)
3.5
2.5
1.0
0.1 0.2 0.6 0.7 0.8 0.9
0.0
NORMALIZED OUTPUT CURRENT (I
O
/I
O
,
max
)
1.5
2.0
0.5
4.0
1.00.0 0.4 0.50.3
3.0
V
I
= 36 V
V
I
= 27 V
POWER DISSIPATION, P
D
(W)
V
I
= 18 V
0.5 1.0 1.5 2.0 2.5
0.0
2.5
1.5
1.0
2.0
0.0
3.0
0.5
OUTPUT CURRENT, I
O
(
A
)
V
I
= 36 V
POWER DISSIPATION, P
D
(W)
V
I
= 27 V
V
I
= 18 V
0.2 0.6 0.7 0.8 0.9
0.0
2.5
NORMALIZED OUTPUT CURRENT,
I
O1
= I
O2
[
(
I
O1
+ I
O2
)
/
(
I
O1
,
max
+ I
O2
,
max
)
]
1.5
1.0
2.0
3.5
1.00.1
3.0
0.5
0.4 0.50.3
V
I
= 36 V
V
I
= 24 V
V
I
= 18 V
POWER DISSIPATION, P
D
(W)
2020 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations (continued)
8-1383(C)
Note: The power dissipation of this unit is shown at TC = TC, max
because the efficiency of this power module drops at high
temperatures.
Figure 53. LW015A Power Dissipation at Maximum
Case Temperature
8-1814(C)
Figure 54. LW015B, C Typical P ower Dissipation vs.
Normalized Output Current at TC = 25 °C
8-1815(C)
Figure 55. LW010D, LW015D Typical Power
Dissipation vs. Output Current at
TC = 25 °C
8-2109(C)
Figure 56. LW010D9 Typical Power Dissipation vs.
Output Current at TC = 25 °C with Output
Voltage Trimmed Up to 2.5 V
8-1385(C)
Note: The power dissipation of this unit is shown at TC = TC, max
because the efficiency of this power module drops at high
temperatures.
Figure 57. LW015F Power Dissipation at Maximum
Case Temperature
0.0 0.5 1.0 1.5 2.0 3.0
0.0
3.0
3.5
4.0
4.5
OUTPUT CURRENT, I
O
(A)
POWER DISSIPATION, P
D
(W)
2.5
2.0
0.5
2.5
V
I
= 48 V
V
I
= 60 V
V
I
= 75 V
1.0
1.5
V
I
= 36 V
0.19 0.33 0.50 0.830.66 1.00
0.0
3.0
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
,
max
)
2.0
1.5
2.5
4.0
0.05
3.5
1.0
0.5
4.5
5.0
POWER DISSIPATION, P
D
(W)
V
I
= 36 V
V
I
= 48 V
V
I
= 60 V
V
I
= 75 V
1.0
0.0
2.0
3.0
3.5
0.5
1.5
2.5
0.5 1.0 1.5 2.0 2.5 3.00.0
OUTPUT CURRENT, I
O
(
A
)
V
I
= 36 V
POWER DISSIPATION, P
D
(W)
V
I
= 48 V
V
I
= 60 V
V
I
= 75 V
0.4 0.6 0.8 1.0 1.2 1.4 2.00.2 1.6 1.80.0
0.5
2.1
1.7
1.5
1.9
2.5
2.3
1.3
1.1
0.9
0.7
OUTPUT CURRENT, IO (A)
POWER DISSIPATION, PD (W)
VI = 36 V
VI = 75 V
VI = 48 V
0.0 0.5 1.0 1.5 2.0 3.0
0.0
3.0
3.5
OUTPUT CURRENT, I
O
(A)
POWER DISSIPATION, P
D
(W)
2.5
2.0
0.5
2.5
V
I
= 75 V V
I
= 48 V
V
I
= 60 V
1.0
1.5
V
I
= 36 V
4.0
Lucent Technologies Inc. 21
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Thermal Considerations (continued)
8-1380(C)
Figure 58. LW010A, B, C Typical Power Dissipation
vs. Normalized Output Current at
TC = 25 °C
8-1816(C)
Figure 59. LW010F Typical Power Dissipation vs.
Output Current at TC = 25 °C
8-1817(C)
Figure 60. LW010AJ, BK, CL Typical Power
Dissipation vs. Normalized Output
Current at TC = 25 °C
Module Derating
The derating curves in Figures 43 through 45 were
determined by measurements obtained in an experi-
mental apparatus shown in Figure 61. Note that the
module and the printed-wiring board (PWB) that it is
mounted on are both vertically oriented. The passage
has a rectangular cross section.
8-1126(C).d
Note: Dimensions are in millimeters and (inches).
Figure 61. Experimental Test Setup
Layout Considerations
Copper paths must not be routed beneath the power
module standoffs.
0.1 0.2 0.3 0.4 0.5 0.6
0.0
2.5
NORMALIZED OUTPUT CURRENT
(
I
O
/I
O
, max
)
1.5
1.0
0.5
2.0
POWER DISSIPATION, P
D
(W)
V
I
= 75 V
3
.5
0.7 0.8 0.9 1.00.0
V
I
= 48 V
V
I
= 36 V
3.0
V
I
= 60 V
1.0
0.0
2.0
3.0
3.5
0.5
1.5
2.5
0.5 1.0 1.5 2.0 2.50.0
OUTPUT CURRENT, I
O
(
A
)
V
I
= 36 V
V
I
= 48 V
POWER DISSIPATION, P
D
(W)
V
I
= 60 V
V
I
= 75 V
0.2 0.4 0.6 0.8 1.0
0.0
2.5
1.5
1.0
2.0
0.0
3
.
0
0.5
NORMALIZED OUTPUT CURRENT,
I
O1
= I
O2
[(I
O1
+ I
O2
)/(I
O1
,
max
+ I
O2
,
max
)]
V
I
= 36 V
V
I
= 48 V
V
I
= 60 V
POWER DISSIPATION, P
D
(W)
V
I
= 75 V
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED
BELOW THE
MODULE
AIRFLOW
13 (0.5)
FACING PWB
MODULE
76 (3.0)
PWB
22 Lucent Technologies Inc.
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Outline Diagram
Dimensions are in millimeters and (inches).
Tolerance: x.x ± 0.5 mm (0.020 in.); x.xx ± 0.38 mm (0.015 in.).
If slightly lower height is needed, the four standoffs can be dropped through holes on the user’s PWB. By dropping
the standoffs through the PWB, the module height will be decreased to 9.5 mm (0.375 in.) typical height.
8-1329(C).b
* An optional short pin dimension is 2.8 mm ± 0.25 mm (0.110 in. ± 0.010 in.).
T op View
Side View
Bottom View
Pin Function Pin Function
1V
I(–) 4 VO(+) or VO1(+)
2VI(+) 5 COMMON (dual outputs) or
TRIM (optional on single outputs)
Pin is not present on single outputs unless
option is specified.
Pin is always present on dual outputs.
3 ON/OFF or SYNC (optional)
Pin is not present unless one of these
options is specified.
6V
O(–) or VO2(–)
0.51
(0.020) 10.16 (0.400)
MAX
5.84 (0.230)*
MIN
0.63 (0.025) x 0.63 (0.025)
SQUARE PIN,
ALL PLACES
STANDOFF
DIAMETER 0.63 (0.025)
TYP, 4 PLACES
6
4
3
2
1
15.2
(0.60) 20.32 (0.800)
2.54
(0.100)
5.08
(0.200) 12.7
(0.500)
0.32 (0.0125)
TYP
7.62 (0.300)
24.77
(0.975)
5
10.16
(0.400)
27.9 (1.10)
9.91
(0.39)
7.62
(0.300)
25.4
(1.00)
50.8 (2.00)
+
–
+
–
OUTIN
Lucent
LC015A
DC-DC Power Module
IN:DC 18-36V, 1.1A OUT:DC 5V, 3A
MADE IN USA
Lucent Technologies Inc. 23
Data Sheet
August 1998 18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Recommended Hole Pattern
Component-side footprint.
Dimensions are in millimeters and (inches).
8-1329(C).b
Ordering Information
Table 6. Device Codes
Input V oltage Output V oltage Output Power Device Code Comcode
18 V—36 V 5 V 15 W LC015A 107809550
18 V—36 V 12 V 15 W LC015B 107983140
18 V—36 V 15 V 15 W LC015C TBD
36 V—75 V 2 V 6 W LC015D TBD
18 V—36 V 3.3 V 10 W LC015F 107809543
18 V—36 V 5 V 10 W LC010A 107747925
18 V—36 V 12 V 10 W LC010B 107747933
18 V—36 V 15 V 10 W LC010C 107747941
18 V—36 V 2 V 4 W LC010D 107747958
18 V—36 V 3.3 V 8 W LC010F 107747966
18 V—36 V ±5 V 15 W LC010AJ 107987083
18 V—36 V ±12 V 15 W LC010BK 107809592
18 V—36 V ±15 V 15 W LC010CL TBD
36 V—75 V 5 V 15 W L W015A 107809527
36 V—75 V 12 V 15 W L W015B 107935413
36 V—75 V 15 V 15 W L W015C 107935421
36 V—75 V 2 V 6 W LW015D 107809501
36 V— 75 V 3.3 V 10 W L W015F 107809535
36 V—75 V 5 V 10 W L W010A 107747974
36 V—75 V 12 V 10 W L W010B 107747982
36 V—75 V 15 V 10 W L W010C 107747990
36 V—75 V 2 V 4 W LW010D 107748006
36 V—75 V 3.3 V 8 W LW010F 107748014
36 V—75 V ±5 V 10 W L W010AJ 107935405
36 V—75 V ±12 V 10 W L W010BK 107809568
36 V—75 V ±15 V 10 W L W010CL TBD
15.2
(0.60) 20.32 (0.800)
2.54
(0.100)
5.08
(0.200)
20.32
(0.800)
27.94 (1.10)
24.77
(0.975)
7.62
(0.300)
50.8 (2.00)
CASE OUTLINE
STANDOFF
25.4
(1.00)
9.91
(0.39)
7.62
(0.300)
10.16
(0.400)
Data Sheet
August 1998
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
LC/LW010- and LC/LW015-Series Power Modules:
Copyright © 1998 Lucent Technologies Inc.
All Rights Reserved
Printed in U.S.A.
August 1998
DS98-040EPS (Replaces DS97-027EPS) Printed On
Recycled Paper
For additional information, contact your Lucent Technologies Account Manager or the following:
POWER SYSTEMS UNIT: Network Products Group, Lucent Technologies Inc., 3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819 (Outside U.S.A.: +1-972-284-2626, FAX +1-972-284-2600) (product-related questions or technical assistance)
INTERNET: http://www.lucent.com/networks/power
E-MAIL: techsupport@lucent.com
ASIA PACIFIC: Lucent Technologies Singapore Pte. Ltd., 750A Chai Chee Road #05-01, Chai Chee Industrial Park, Singapore 469001
Tel. (65) 240 8041, FAX (65) 240 8053
JAPAN: Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141-0022, Japan
Tel. (81) 3 5421 1600, FAX (81) 3 5421 1700
LATIN AMERICA: Lucent Technologies Inc., Room 9N128, One Alhambra Plaza, Coral Gables, FL 33134, USA
Tel. +1-305-569-4722, FAX +1-305-569-3820
EUROPE: Data Requests: DATALINE: Tel. (44) 1189 324 299, FAX (44) 1189 328 148
Technical Inquiries:GERMANY: (49) 89 95086 0 (Munich), UNITED KINGDOM: (44) 1344 865 900 (Bracknell),
FRANCE: (33) 1 40 83 68 00 (Paris), SWEDEN: (46) 8 594 607 00 (Stockholm), FINLAND: (358) 9 4354 2800 (Helsinki),
ITALY: (39) 02 6608131 (Milan), SPAIN: (34) 91 807 1441 (Madrid)
Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No
rights under any patent accompany the sale of any such product(s) or information.
Ordering Information (continued)
Optional features may be ordered using the device code suffixes shown below. The feature suffixes are listed
numerically in descending order. Please contact your Lucent Technologies Account Manager or Application Engi-
neer for pricing and availability of options.
Table 7. Option Codes
Option Device Code Suffix
Output voltage adjustment 9
Short pin: 2.8 mm ± 0.25 mm
(0.110 in. ± 0.010 in.) 8
Short pin: 3.7 mm ± 0.25 mm
(0.145 in. ± 0.010 in.) 6
Positive logic remote on/off 4
Synchronization
(cannot be ordered on units
with remote on/off)
3
Negative logic remote on/off 1
