LMR36503RS3ERPERQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR36503RS3ERPERQ1 is an automotive-grade synchronous buck converter from Texas Instruments. It operates with an input voltage range of 3 V to 65 V and delivers a maximum output current of 300 mA. The device features a fixed 3 V output and supports adjustable switching frequencies between 200 kHz and 2.2 MHz. Quiescent current is specified at 4 uA, with an operating junction temperature range extending up to +175 °C. It utilizes a VQFN-HR-9 package for compact surface-mount integration.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for high reliability in vehicle environments.
• Wide input voltage capability supporting 3 V to 65 V sources for flexible system design.
• High thermal performance allowing operation at junction temperatures up to 175 °C.

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Instrument cluster power distribution
• Body control modules

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'RS3E' against the official datasheet to confirm the fixed 3 V output configuration and pin assignment. Ensure the component meets the required AEC-Q100 grade for your target automotive application. Cross-reference the VQFN-HR-9 package dimensions with your PCB footprint library to guarantee mechanical compatibility during assembly.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 3 V rail is required within a wide input voltage window up to 65 V. The 300 mA output current suits low-power logic or sensor supplies. Consider the 175 °C thermal rating for high-temperature engine bay locations. Compare against adjustable variants if voltage flexibility is needed instead of a fixed output.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LMR3650x-Q1 family of ultra-small synchronous step-down converters designed for automotive use. The family shares common architectural features but varies in output current, voltage settings, and thermal ratings. This specific model provides a fixed 3 V output optimized for applications requiring stable low-voltage rails from higher voltage automotive buses.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LMR36503RS3QRPERQ1: Alternative package variant with identical electrical specifications and fixed 3 V output.