This is a PDF document about the LM137 three-terminal negative voltage regulator. The product is a precision adjustable negative voltage regulator capable of delivering 1.5 amps of output current. It features built-in thermal overload protection, short circuit current limiting, and the ability to fix output voltages from -1.2 volts to -37 volts using external resistors. Additionally, the product is approved to DESC standardized military drawing number 7703403 and is available in six package styles.
This document provides technical specifications for the Omnirel OM1322 series of three-terminal, precision adjustable negative voltage regulators. These devices are supplied in hermetically sealed packages and include built-in protective features such as thermal shutdown, current-limiting, and safe-area control.
The datasheet details absolute maximum ratings, recommended operating conditions, and comprehensive electrical characteristics including reference voltage, line regulation, load regulation, ripple rejection, and current limits. It also includes mechanical outlines for various package styles (SMD-3, TO-257, TO-3, LCC-20) with pin configurations.
| Output Current (Max) | 1.5A (Case-All Others), 0.5A (LCC-20) |
|---|---|
| Output Voltage Range | -1.2V to -37VDC |
| Reference Voltage (Typical) | -1.25V |
| Operating Junction Temperature Range | -55°C to +150°C |
| Ripple Rejection | 66 dB |
Standard packages (excluding LCC-20) can deliver up to 1.5 amps of output current with heat sinking.
The recommended ambient operating temperature range is -55°C to +125°C.
Yes, all protective features are designed into the circuit, including thermal shutdown and current-limiting.