LM1575K-15QML

Voltage Regulators - DC DC Switching Regulators Overview

The LM1575K-15QML is a military-grade step-down switching regulator from the SIMPLE SWITCHER series, manufactured by National Semiconductor (now Texas Instruments). It provides a fixed 15V output with a maximum load current of 1A. The device operates within an extended junction temperature range of -55°C to +150°C. Key electrical parameters include a typical internal switching frequency of 52kHz or 63kHz and a maximum input voltage of 40V for standard variants. Output voltage accuracy is specified at ±4% under defined conditions.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Military-grade reliability with extended temperature operation
• Integrated thermal shutdown and current limiting protection
• Requires minimal external components for buck topology implementation

Voltage Regulators - DC DC Switching Regulators Applications

• Ruggedized aerospace power systems
• Military communication equipment regulation
• High-reliability industrial control units

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix QML confirms compliance with the required military quality standards and screening procedures. Ensure the package type matches the mechanical constraints of the target assembly. Confirm that the manufacturer source is authorized to supply qualified military lot devices.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when fixed 15V regulation is required in extreme thermal environments. It serves as a direct replacement for linear regulators where efficiency is critical. Consider the 1A current limit and input voltage range against system demands before finalizing the design.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM1575/LM2575 family of 1A buck converters. While LM2575 denotes commercial/industrial grades, the LM1575 prefix specifically identifies the military variant. The QML suffix indicates qualification under specific military procurement specifications, distinguishing it from standard commercial offerings.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM1575K-15/883 may serve as an alternative military-grade option depending on specific qualification requirements. Verify pinout compatibility and thermal performance characteristics against the original design specifications.