1 www.semtech.com
EZ1585C & EZ1585I
4.6 Amp Positive
Voltage Regulator
POWER MANAGEMENT
Revision: January 25, 2006
The EZ1585 series of high performance positive voltage
regulators are designed for use in applications requiring
low dropout performance at up to 4.6A. Additionally, the
EZ1585 series provides excellent regulation over
variations in line, load and temperature.
Outstanding features include low dropout performance
at rated current, fast transient response, internal
current limiting and thermal shutdown protection of the
output device.
A variety of options are available for maximum flexibility:
the EZ1585C is intended for commercial applications and
has both fixed and adjustable voltage options; the
EZ1585I is intended for industrial applications and is
adjustable only.
All devices are available in the popular TO-220 and
TO-263 packages.
Low dropout voltage: 1.3V max. for EZ1585C and
1.4V max. for EZ1585I
Full current rating over line and temperature
Fast transient response
±2% total output regulation over line, load and
temperature
Adjust pin current max 90µA over temperature
Fixed/adjustable output voltage (EZ1585C)
Line regulation typically 0.015%
Load regulation typically 0.05%
Industrial temperature range (EZ1585I)
TO-220 and TO-263 packages. Available in RoHS
compliant package
Printer and plotter supplies
Instrumentation
Medical equipment
Microcontroller systems
Telecommunication systems
Motherboards
Switching supply post regulation
Description Features
Applications
Fixed Voltage Regulator
Adjustable Voltage Regulator
Typical Application Circuit
VIN > 4.75V VOUT = 3.45V
VOUT = 3.3V
VIN > 4.75V
U1 EZ1585
1
23
ADJ
OUTIN TAB
+
C2
10uF Tant. Min.
R1
133 Ohm, 1%
+
C1
10uF Tant.
U1 EZ1585C-3.3
1
23
GND
OUTIN TAB
R2
232 Ohm, 1%
+
C1
10uF Tant.
+
C2
10uF Tant. Min
Notes:
(1) C1 needed if device is far from filter capacitors
(2) C2 minimum value required for stability
2RI
1R
2R
1VV ADJREFOUT •+
+•=
2 2006 Semtech Corp. www.semtech.com
EZ1585C & EZ1585I
POWER MANAGEMENT
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Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 4.6A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 4.6A.
Values in bold apply over full operating ambient temperature range.
Absolute Maximum Ratings
Electrical Characteristics
Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified
in the Electrical Characteristics section is not implied.
3 2006 Semtech Corp. www.semtech.com
EZ1585C & EZ1585I
POWER MANAGEMENT
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NOTES:
(1) Low duty cycle pulse testing with Kelvin connections required.
(2) ∆VOUT, ∆VREF = 1%
(3) Bandwidth of 10 Hz to 10 kHz.
(4) 120 Hz input ripple (CADJ for ADJ = 25µF).
Electrical Characteristics (Cont)
Unless otherwise specified: Adj. VIN = 2.75V to 7.0V and Adj. IO = 10mA to 4.6A; Fixed VIN = 4.75 to 7.0V and Fixed IO = 0 mA to 4.6A.
Values in bold apply over full operating ambient temperature range.
4 2006 Semtech Corp. www.semtech.com
EZ1585C & EZ1585I
POWER MANAGEMENT
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Notes:
(1) Where X.X denotes voltage options (EZ1585C only).
Available voltages are: 2.5V and 3.3V. Leave blank for
adjustable version (1.3 to 5.7V). Contact factory for
additional voltage options.
(2) Where C and I denote Commercial (0°C to 70°C)
and Industrial (-40°C to 85°C) ambient temperature
ranges.
(3) Only available in tape and reel packaging. A reel
contains 800 devices.
(4) Only available in tube packaging. A tube contains 50
devices.
(5) This product is RoHS compliant.
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Pin Configurations Ordering Information
Pin Descriptions
Block Diagram
5 2006 Semtech Corp. www.semtech.com
EZ1585C & EZ1585I
POWER MANAGEMENT
Outline Drawing - TO-220
Outline Drawing - T0-263
H1
D
D1
L
A2
D2
L1
SEATING
PLANE
2x e
e1
3 x b2
3 x b
Ø P
E1
ccc B A
6.86.270 .350 8.90
.030 0.76
6.865.84.270.230
.139 .156 3.53 -3.96
.140
.027
.057 1.45
0.69
-
-
-
-
-
-
-
-
-
-
--
.250 6.35
-
-
-
-
-
-
-
--
0.36.014
0.38.015
0.25.010
3.56
DIMENSIONS
INCHES
NOM
E1
L1
aaa
ccc
bbb
ØP
Q
N
e1
H1
L
E2
e
DIM
b
D1
D2
E
b2
c
D
A
A2
A1
MIN
MILLIMETERS
MAXMINMAX NOM
.100 BSC
.200 BSC
3
.380
.355
.015
3
9.02
2.54 BSC
5.08 BSC
.420 9.65
.040 0.38
10.66
1.02
8.38.330
.100 -
.500
.014 -
.080
.020 -
-
-
.120 2.54 -3.05
-
.580
.024
12.70
0.36
.190
.115
.055 0.51
2.03
0.61
14.73
-
1.40
4.82
2.92
-
-
DIMENSIONS "D" AND "E" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
OR GATE BURRS.
CONTROLLING DIMENSIONS ARE IN INCHES.
NOTES:
1.
2.
1.14.045 .070 1.78
14.22.650.560 -16.51
-
.480 12.8812.19.507
E
E/2
Q
E2
A
A
c
bbb B A
C
aaa B A
B
A1
CONTROLLING DIMENSIONS ARE IN INCHES (ANGLES IN DEGREES).
DIMENSIONS "D" AND "E" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS
PLANE
SEATING
2.
1.
NOTES:
aaa B A
OR GATE BURRS.
B
A
E1
bxN
A1
A
L1
D
E
01
SEE DETAIL
L
c
c1
aaa
01
N
D1
H
L1
e
L
E1
E
c
D
c1
b1
b
A1
A
DIM MILLIMETERSINCHES
DIMENSIONS
MIN NOM MAX MIN MAXNOM
0
E/2
0-15° - 15°--
H
.575 .625 14.61 15.88
--
DETAIL A
.100 BSC
SIDE VIEW
A
2.54 BSC
e
123
0°
.010
3
-8° 0°
0.25
-
3
8°
-
.270 -
.070
-
.245
.380
-
-
-
-
.015
.326
.045
.045
.000
.020
-
-
-
-
-
6.86
-
.110
.066
-
.420
1.78
-
6.22
9.65
.029
.380
.065
.070
.010
.039
0.38
8.28
1.14
1.14
0.00
0.51
.160 -.190 4.06
-
10.67
--
-
-
-
-
2.79
1.68
-
-
-
-
-
-
0.74
9.65
1.65
1.78
0.25
0.99
-4.83
PLATED COPPER
HEAT SPREADER
3x b1
(L1)
D1
6 2006 Semtech Corp. www.semtech.com
EZ1585C & EZ1585I
POWER MANAGEMENT
Land Pattern - TO-263
Semtech Corporation
Power Management Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804
Contact Information
Y
P
H
X
P .100 2.54
X .070 1.78
Z .615 15.62
K
Z
G
NOTES:
1. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY
CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR
COMPANY'S MANUFACTURING GUIDELINES ARE MET.
DIM
H
G
MILLIMETERSINCHES
.420
.125
10.67
3.17
DIMENSIONS
Y
K
.140
.350
3.56
8.89
