M38510/11804SYA

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The M38510/11804SYA is a military-grade adjustable negative voltage regulator manufactured by Texas Instruments. It belongs to the LM137JAN series and provides an output current of up to 1.5 A with an adjustable output voltage range from -37 V to -1.2 V. The device operates within an ambient temperature range of -55°C to +125°C and features internal thermal overload protection, short-circuit protection, and temperature-independent current limiting. It utilizes a TO-3 metal can package (Package K) designed for high power dissipation capabilities.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Adjustable output voltage capability spanning from -37 V down to -1.2 V using only two external resistors
• Integrated safety mechanisms including internal thermal shutdown and temperature-independent current limiting
• High ripple rejection performance ensuring stable regulation under varying input conditions
• Robust construction in a hermetically sealed TO-3 metal can package suitable for harsh environments

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Local on-card voltage regulation in military and aerospace systems
• Precision programmable negative output voltage supplies
• High-reliability industrial power distribution networks

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify that the component matches the specific MIL-M-38510 specification requirements for your application. Confirm the package type is the TO-3 metal can variant as indicated by the suffix. Ensure compatibility with your system's thermal management strategy given the power dissipation characteristics. Validate that the supplier provides appropriate traceability documentation for military-grade parts.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this regulator when a robust, adjustable negative voltage source is required for high-current applications. Consider the TO-3 package size constraints and thermal resistance values during the design phase. Evaluate the need for external protection diodes if large output capacitors are used or if input short circuits are possible. Compare against positive regulator counterparts like the LM117 if dual polarity supplies are needed.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part is a qualified version of the LM137JAN series, specifically tailored for military and defense applications. It adheres to strict quality conformance inspection standards defined in Mil-Std-883. The device serves as the negative counterpart to the LM117 positive regulator, offering similar adjustability and protection features but for negative voltage rails in critical electronic systems.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct replacements include other qualified versions of the LM137JAN series such as JM38510/11803BXA or JL137SYA, provided they meet the same MIL-M-38510 specifications. Verify pinout compatibility and thermal performance before substitution.