LM53635MQRNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM53635MQRNLRQ1 is an automotive-grade synchronous step-down DC/DC converter from Texas Instruments. It operates with an input voltage range of 3.9 V to 36 V and delivers a fixed output voltage of 5 V at up to 3.5 A. The device integrates a 2.1 MHz switching frequency, enabling the use of compact external components. It features a low quiescent current of 6 uA and supports junction temperatures from -40°C to +150°C. Packaged in a 22-pin VQFN-HR, it meets AEC-Q100 standards for automotive reliability.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency across load ranges
• Fixed 2.1 MHz switching frequency minimizes passive component size
• Low static current consumption extends battery life in standby modes
• Robust thermal performance supporting high-temperature automotive environments

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment system power distribution
• Telematics control unit voltage regulation
• Body control module (BCM) power supplies
• ADAS sensor interface power conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct suffix alignment. Confirm that the specific package variant matches design requirements. Cross-reference the datasheet revision date to validate technical specifications. Ensure compliance with RoHS directives as stated in the manufacturer's declaration. Check for any recent product change notices affecting pinout or electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required for automotive applications. The 3.5 A current capability suits moderate power loads. The 2.1 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Verify that the input voltage range covers the system's operational extremes. Consider thermal management needs given the high junction temperature rating.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LM53635-Q1 family of high-efficiency synchronous buck converters designed for automotive electronics. It shares architectural similarities with other members like the LM536355QRNLTQ1 but differs in output configuration. The family targets demanding automotive environments requiring high reliability and compact form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM536355QRNLTQ1 provides identical electrical performance with a fixed 5 V output. LM536353QRNLTQ1 offers a fixed 3.3 V output with the same current and package specifications. Both are direct functional replacements within the same automotive grade series.