OM1325SMM |
OM1325NMM |
OM1325STM |
OM1325NKM |
OM1325NTM |
OM1325N2M |
1.5 AMP NEGATIVE ADJUSTABLE VOLTAGE
REGULATOR APPROVED TO DESC DRAWING 7703406
Three Terminal, Precision Adjustable Negative Voltage Regulator In Hermetic
Style Packages (LM137A)
Please see mechanical outlines herein
FEATURES
•Similar To Industry Standard LM137A
•Approved To DESC Standardized Military Drawing Number 7703406
•Built In Thermal Overload Protection
•Short Circuit Current Limiting
•Available In Six Package Styles
• Maximum Output Voltage Tolerance Is Guaranteed to + |
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1% |
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.
4 11 R2
Supersedes 1 07 R1
ABSOLUTE MAXIMUM RATINGS |
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T |
c @ 25°C |
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Power Dissipation |
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Case 2 . . . . . . . . . . . . . . . . . . . . . . |
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 W |
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Case-All Others. . . . . . . . . . . . . . . . . |
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20 W |
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Input - Output Voltage Differential . . . . . . . . |
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. . . . . . . . . . . . . . . . 40 V |
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Operating Junction Temperature Range . . . . . . . . |
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- 55°C to + 150°C |
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Storage Temperature Range . . . . . . . . . . . . . . |
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. . . - 65°C to + 150°C |
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Lead Temperature (Soldering 10 seconds) . . . . . . |
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. . . . . . . . 300°C |
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Thermal Resistance, Junction to Case: |
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Case 2, LCC-20 . . . . . . . . . . . . . . . . . . |
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. . . . . . . . . . . . . . 17°C/W |
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Case U & M, TO-257 (Isol) and SMD-3 . . . |
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. . . . . . . . . 4.2°C/W |
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. .Case T&N, TO-257 (Non-Isol) and SMD-1 |
. . . . . . . . . . . . . . . . . . . . . 3.5°C/W |
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3.5 |
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Case Y, TO-3 |
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3.0°C/W |
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Maximum Output Current: |
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Case 2 . . . . . . . . . . . . . . . . . . . . . . |
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 A |
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Case-All Others. . . . . . . . . . . . . . . . . . |
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1.5A |
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Recommended Operating Conditions: |
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Output Voltage Range . . . . . . . . . . . . . . |
. . |
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. . . . . . . .-1.2 to -37 VDC |
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Ambient Operating Temperature Range (T |
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A ). . . |
. . . . . . . . . . . . . - 55°C to + 125°C |
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Input Voltage Range . . . . . . . . . . . . . . |
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. . . . . -4.25 to -41.25 VDC |
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3.5 - 21 |
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OM1325NTM, OM1325STM, OM1325NKM, OM1325SMM, OM1325NMM, OM1325N2M
ELECTRICAL CHARACTERISTICS
-55°C ≤ T A ≤ 125°C, I L = 8mA (unless otherwise specified)
OM1325NTM, OM1325STM, OM1325NKM, OM1325SMM, OM1325NMM
Parameter |
Symbol |
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Test Conditions |
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Min. |
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Max. |
Unit |
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Reference Voltage |
V |
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REF |
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VDIFF |
= 3.0V, T A |
= 25°C |
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-1.262 |
-1.238 |
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VDIFF |
= 3.0V |
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• |
-1.280 |
-1.220 |
V |
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VDIFF |
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= 40V |
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• |
-1.280 |
-1.220 |
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Line Regulation |
R |
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LINE |
3.0 V ≤ |
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VDIFF |
≤ 40V, T A = 25°C |
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-4.5 |
4.5 |
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(Note 1) |
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3.0V ≤ |
VDIFF |
≤ 40V |
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• |
-13.8 |
13.8 |
mV |
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Load Regulation |
R |
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LOAD |
VDIFF |
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=5V, 8mA ≤ I |
L ≤ 1.5A |
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• |
-25 |
25 |
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(Note 1) |
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VDIFF |
=12V, 8mA ≤ I |
L |
≤ 1.5A, T |
A |
= 25°C |
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-25 |
25 |
mV |
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VDIFF |
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40V, 8mA ≤ I |
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L |
≤ 1.5A, T |
A |
= 25°C |
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-25 |
25 |
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VDIFF |
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=40V, 8mA ≤ I |
L ≤ 1.5A |
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• |
-50 |
50 |
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Thermal Regulation |
V |
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RTH |
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Vin |
= -14.6V, I |
L = 1.5A |
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-5 |
5 |
mV |
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P d = 20 Watts, t = 10 ms, T |
A |
= 25°C |
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Ripple Rejection |
R |
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N |
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f = 120 Hz, V out |
= Vref |
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• |
66 |
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dB |
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(Note 2) |
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C |
Adj = 10 µF |
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Adjustment Pin Current |
I |
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Adj |
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VDIFF |
= 3.0V |
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• |
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100 |
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VDIFF |
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= 40V |
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• |
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100 |
µA |
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Adjustment Pin |
∆I |
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Adj |
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Current Change |
(line) |
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3V ≤ |
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VDIFF ≤ 40V |
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• |
-5 |
5 |
µA |
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∆IAdj |
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(load) |
VDIFF |
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= 5V, 8mA ≤ I |
L ≤ 1.5A |
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• |
-5 |
5 |
µA |
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Miminum Load Current |
I |
Lmin |
VDIFF |
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= 3.0V, V |
out |
= -1.4V (forced) |
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3.0 |
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VDIFF |
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= 10V, V |
out |
= -1.4V (forced) |
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3.0 |
mA |
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VDIFF |
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= 40V, V ou |
t = -1.4V (forced) |
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5.0 |
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Current Limit |
I |
CL |
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VDIFF |
≤ 5V |
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• |
1.5 |
3.5 |
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(Note 2) |
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VDIFF |
= 40V, T |
A |
= 25°C |
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0.24 |
1.2 |
A |
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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.
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PART NUMBER DESIGNATOR |
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Standard Military Drawing Number |
Omnirel Part Number |
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Omnirel Package Designation |
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7703406M |
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OM1325SMM |
SMD-3 |
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7703406U |
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OM1325STM |
TO-257 (Isolated) |
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3.5 |
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7703406T |
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OM1325NTM |
TO-257 (non-Isolated) |
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7703406Y |
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OM1325NKM |
TO-3 |
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7703406N |
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OM1325NMM |
SMD-1 |
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77034062 |
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OM1325N2M |
LCC-20 |
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3.5 - 22
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