3.5 - 9
3.5
Three Terminal, Precision Adjustable
Negative Voltage Regulator In Hermetic
Style Packages (LM137)
4 11 R2
Supersedes 1 07 R1
1.5 AMP NEGATIVE ADJUSTABLE VOLTAGE
REGULATOR APPROVED TO DESC DRAWING 7703403
OM1322STM
OM1322N2M
OM1322NMM
OM1322NTM
OM1322SMM
OM1322NKM
FEATURES
• Similar To Industry Standard LM137
• Approved To DESC Standardized Military Drawing Number 7703403
• Built In Thermal Overload Protection
• Short Circuit Current Limiting
• Available In Six Package Styles
DESCRIPTION
These three terminal negative regulators are supplied in hermetically sealed
packages. All protective features are designed into the circuit, including thermal
shutdown, current-limiting, and safe-area control. With heat sinking, these devices
can deliver up to 1.5 amps of output current. The LCC-20 device is limited to .5
amps. The unit also features output voltages that can be fixed from -1.2 volts to -37
volts using external resistors.
ABSOLUTE MAXIMUM RATINGS Tc @ 25°C
Power Dissipation
Case 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 W
Case-All Others. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 W
Input - Output Voltage Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65°C to + 150°C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . 300°C
Thermal Resistance, Junction to Case:
Case 2, LCC-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17°C/W
Case U & M, TO-257 (Isol) and SMD-3 . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2°C/W
Case T&N, TO-257 (Non-Isol) and SMD-1 . . . . . . . . . . . . . . . . . . . . . . . 3.5°C/W
Case Y, TO-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0°C/W
Maximum Output Current:
Case 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 A
Case-All Others. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A
Recommended Operating Conditions:
Output Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-1.2 to -37 VDC
Ambient Operating Temperature Range (TA) . . . . . . . . . . . . . . . - 55°C to + 125°C
Input Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -4.25 to -41.25 VDC
Please see mechanical
outlines herein
3.5 - 10
3.5
OM1322NTM, OM1322STM, OM1322NKM, OM1322SMM, OM1322NMM, OM1322N2M
Parameter Symbol Test Conditions Min. Max. Unit
Reference Voltage VREF VDIFF = 3.0V, TA= 25°C -1.275 -1.225
VDIFF = 3.0V •-1.30 -1.20 V
VDIFF = 40V, TA= 25°C -1.275 -1.225
VDIFF = 40V •-1.30 -1.20
Line Regulation RLINE 3.0 V ≤ VDIFF ≤ 40V, TA= 25°C -9 9
(Note 1) 3.0 V ≤ VDIFF ≤ 40V •-23 23 mV
Load Regulation RLOAD VDIFF = 5.0V, 8mA ≤ IL≤ 1.5A •-25 25
(Note 1) VDIFF = 12V, 8mA ≤ IL≤ 1.5A, TA= 25°C -25 25 mV
VDIFF = 40V, 8mA ≤ IL≤ 200mA, TA= 25°C -25 25
VDIFF = 40V, 8mA ≤ IL≤ 100mA •-25 25
Thermal Regulation VRTH Vin = -14.6V, IL= 1.5A -5 5 mV
Pd= 20 Watts, t = 10 ms, TA= 25°C
Ripple Rejection RNf = 120 Hz, Vout = Vref •66 dB
(Note 2) CAdj = 10 µF
Adjustment Pin Current IAdj VDIFF = 3.0V •100
VDIFF = 40V •100 µA
Adjustment Pin ∆IAdj (Line) 3.0V ≤ VDIFF ≤ 40V •-5 5 µA
Current Change ∆IAdj (Load) VDIFF = 5V, 8mA ≤ IL≤ 1.5A •-5 5 µA
Miminum Load Current ILmin VDIFF = 3.0V, Vout = -1.4V (forced) •3.0
VDIFF = 10V, Vout = -1.4V (forced) •3.0 mA
VDIFF = 40V, Vout = -1.4V (forced) •5.0
Current Limit ICL VDIFF ≤5V •1.5 3.5
(Note 2) VDIFF = 40V, TA= 25°C 0.24 1.2 A
Notes:
1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
Changes in output voltage due to heating effects must be taken into account separately.
2. If not tested, shall be guaranteed to the specified limits.
3. The •denotes the specifications which apply over the full operating temperature range.
PART NUMBER DESIGNATOR
Standard Military Drawing Number Omnirel Part Number Omnirel Package Designation
7703403M OM1322SMM SMD-3
7703403U OM1322STM TO-257 (Isolated)
7703403T OM1322NTM TO-257 (non-Isolated)
7703403Y OM1322 NKM TO-3
7703403N OM1322NMM SMD-1
77034032 OM1322N2M LCC-20
ELECTRICAL CHARACTERISTICS -55°C ≤ TA≤ 125°C, IL= 8mA (unless otherwise specified)
OM1322NTM, OM1322STM, OM1322NKM, OM1322SMM, OM1322NMM
3.5 - 11
3.5
OM1322NTM, OM1322STM, OM1322NKM, OM1322SMM, OM1322NMM, OM1322N2M
Parameter Symbol Test Conditions Min. Max. Unit
Reference Voltage VREF VDIFF = 3.0V, TA= 25°C -1.275 -1.225
VDIFF = 3.0V •-1.30 -1.20 V
VDIFF = 40V, TA= 25°C -1.275 -1.225
VDIFF = 40V •-1.30 -1.20
Line Regulation RLINE 3.0 V ≤ VDIFF ≤ 40V, TA= 25°C -9 9
(Note 1) 3.0 V ≤ VDIFF ≤ 40V •-23 23 mV
Load Regulation RLOAD VDIFF = 5.0V, 8mA ≤ IL≤ 200mA •-25 25
(Note 1) VDIFF = 15V, 8mA ≤ IL≤ 200mA, TA= 25°C -25 25 mV
VDIFF = 40V, 8mA ≤ IL≤ 150mA, TA= 25°C -25 25
VDIFF = 40V, 8mA ≤ IL≤ 50mA •-25 25
Thermal Regulation VRTH Vin = -16.25V, IL= 330mA -5 5 mV
Pd= 5 Watts, t = 10 ms, TA= 25°C
Ripple Rejection RNf = 120 Hz, Vout = Vref •66 dB
(Note 2) CAdj = 10 µF
Adjustment Pin Current IAdj VDIFF = 3.0V •100
VDIFF = 40V •100 µA
Adjustment Pin ∆IAdj (Line) 3.0V ≤ VDIFF ≤ 40V •-5 5 µA
Current Change ∆IAdj (Load) VDIFF = 5V, 8mA ≤ IL≤ 500 mA •-5 5 µA
Miminum Load Current ILmin VDIFF = 3.0V, Vout = -1.4V (forced) •3.0
VDIFF = 10V, Vout = -1.4V (forced) •3.0 mA
VDIFF = 40V, Vout = -1.4V (forced) •5.0
Current Limit ICL VDIFF ≤5V •0.5 1.8
(Note 2) VDIFF = 40V, TA= 25°C 0.15 0.65 A
Notes:
1. Load and Line Regulation are specified at a constant junction temperature. Pulse testing with low duty cycle is used.
Changes in output voltage due to heating effects must be taken into account separately.
2. If not tested, shall be guaranteed to the specified limits.
3. The •denotes the specifications which apply over the full operating temperature range.
*C
in is required if regulator is located more than
4 inches from power supply filter. A 1 µF solid
tantalum or 10 µF aluminum electrolytic is
recommended.
** Cois necessary for stability. A 1 µF solid
tantalum or 10 µF aluminum electrolytic is
recommended.
Vout = -1.25 V (1 +R2)
R1
OM1322STM
1.0µF 1.0µF
-VIN -VOUT
VOUT
VIN
IAdj
IPROG
CIN*C
O**
R2R1
120Ω
++
ELECTRICAL CHARACTERISTICS -55°C ≤ TA≤ 125°C, IL= 8mA (unless otherwise specified)
OM1322N2M
3.5
OM1322SMM
Front View
Pin 1 - Adjust
Pin 2 - Output
Pin 3 - Input
Case - Isolated
OM1322STM OM1322NTM
Isolated Non-Isolated
Front View Front View
Pin 1 - Adjust Pin 1 - Adjust
Pin 2 - Input Pin 2 - Input
Pin 3 - Output Pin 3 - Output
Tab - Isolated Tab - Input 12
3
OM1322NMM
Pin 1 - Adjust
Pin 2 - Output
Pin 3 - Input
OM1322NKM
Pin 1 - Adjust
Pin 2 - Output
Case - Input
OM1322N2M
Pin 1 VOUT Pin 11 VIN
Pin 2 VOUT(Sense) Pin 12 NC
Pin 3 NC Pin 13 NC
Pin 4 NC Pin 14 NC
Pin 5 NC Pin 15 NC
Pin 6 NC Pin 16 ADJUST
Pin 7 NC Pin 17 NC
Pin 8 NC Pin 18 NC
Pin 9 NC Pin 19 NC
Pin 10 NC Pin 20 NC
.430N
.410N
.200N
.190N
.038 MAX.N
.005N
N
.120 TYP.N
.537N
.527N
.665N
.645N
.420N
.410N
.150N
.140N
.750N
.500N
.100 TYP.N
.035N
.025N
.045N
.035N
MECHANICAL OUTLINE
.425N
.200N
N
N
N
.100N
.350 MIN.N
.080 N
N
.160N
.020N
± .020N
.035 WIDEN
FLAT 3 PLCS.N
.115N
.425N
.140
.415
.157
.015
.140 .140
.075
.075
.062 .375
.030
MIN.
.075 (±.010)
TYP.
.040.020 X45°
REF.
.040 X45°
REF (3 PL)
.010
.160
SQ. REF.
.065 .009 R.
20 PLCS.
3
1
19
18 14
4
13
9
.003 .050
TYP.
.050 (±.005)
TYP.
.085
.025 SQ.
TYP.
(±.003)
.025
TYP.
123
1
2
3
12
3
For additional information please see the mechanical outline section.
OM1322NTM, OM1322STM, OM1322NKM, OM1322SMM, OM1322NMM, OM1322N2M
1.197
1.177
0.675
0.655
0.188 R.
MAX.
0.440
0.420
0.161
0.151 0.525 R.
MAX.
0.225
0.205
SEATING
PLANE
0.312
MIN.
0.450
0.250
0.043
0.038
2 PLCS.
0.135
MAX.
0.875
MAX.
1.53
REF.
2
1
