OM1325SMM OM1325NMM OM1325STM
OM1325N2M
OM1325NKM OM1325NTM
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 + 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.
ABSOLUTE MAXIMUM RATINGS T @ 25°C
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:
3.5
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
4 11 R2
Supersedes 1 07 R1
3.5 - 21