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Product Detailed Parameters
- Description：IC REG LINEAR NEG ADJ 1.5A WAFER
- Series：-
- Mfr：Texas Instruments
- Package：Bulk
- Output Configuration：Negative
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：-41.25V
- Voltage - Output (Min/Fixed)：-1.2V
- Voltage - Output (Max)：-37V
- Voltage Dropout (Max)：-
- Current - Output：1.5A
- Current - Quiescent (Iq)：-
- Current - Supply (Max)：-
- PSRR：66dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：Die
- Supplier Device Package：Wafersale
- Grade：-
- Qualification：-
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Overview
The LM137KG-MW8 is a military-grade, adjustable three-terminal negative voltage regulator manufactured by Texas Instruments. It delivers an output current exceeding 1.5 A across an adjustable voltage range of -37 V to -1.2 V. The device operates with an input voltage range from -40 V to -4.2 V and maintains a typical quiescent current of 65 uA. It supports extended temperature operation from -55°C to +125°C and is supplied in wafer form for specialized packaging integration.
Feature Summary
- Military-grade reliability suitable for harsh environments
- Adjustable output voltage capability over a wide negative range
- High current delivery exceeding 1.5 A
Applications
- Military electronic systems requiring regulated negative power rails
- Aviation equipment power distribution networks
- Spacecraft instrumentation power supplies
Procurement Notes
Verify the specific revision level and wafer lot details directly with Texas Instruments or authorized distributors before procurement. Ensure that the receiving facility has the necessary infrastructure for handling bare wafers and subsequent custom packaging processes. Confirm compliance with all applicable military specifications and quality standards required for the intended deployment environment.
Selection Notes
Select this component when a robust, high-current negative regulator is required for mission-critical applications. It is appropriate for designs needing wide input voltage tolerance and extended temperature stability. Consider the wafer-only supply format, which necessitates internal assembly capabilities or third-party packaging services for final integration into printed circuit boards.
Part Context
This part belongs to the LM137 series of adjustable negative regulators. It shares functional similarities with commercial variants like the LM137H but differs significantly in qualification standards and packaging. While other models offer standard through-hole packages, this specific designation indicates a wafer-level product intended for specialized military or aerospace manufacturing workflows.
Replacement Considerations
Direct pin-compatible replacements include the LM137H/NOPB for commercial applications, though they lack military qualification. For equivalent performance in non-military contexts, verify compatibility with other LM137 family members. No direct drop-in military equivalents are listed in public documentation.
