LM53635MQURNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM53635MQURNLRQ1 is a synchronous step-down DC/DC converter designed for automotive applications. It operates with an input voltage range of 3.9 V to 36 V and delivers up to 3.5 A of output current. The device features a fixed switching frequency of 2.1 MHz, enabling the use of small external components. It provides a fixed 5 V output in a 22-pin VQFN-HR package. The component meets AEC-Q100 standards and supports junction temperatures up to 150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification for high efficiency
• Fixed 2.1 MHz switching frequency for compact design
• Automotive-grade reliability with extended temperature range

Voltage Regulators - DC DC Switching Regulators Applications

• Automotive infotainment systems
• Body control modules
• Telematics units
• ADAS sensor power supplies

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number against official Texas Instruments documentation to ensure correct suffixes for packaging and temperature grade. Confirm that the specific variant matches the required automotive qualification status and pinout configuration before integration into the supply chain.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5 V output is required at currents up to 3.5 A in space-constrained automotive designs. The 2.1 MHz frequency allows for smaller inductors compared to lower-frequency alternatives. Ensure the input voltage remains within the 3.9 V to 36 V operational window for stable regulation.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM53635-Q1 family of high-efficiency synchronous buck converters. The family shares common architectural features but varies in output voltage options and thermal performance. The LM53635MQURNLRQ1 specifically denotes the 5 V fixed output version in the VQFN-HR-22 package.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LM53635-Q1 variants with different output voltages or packages, such as LM53635NQRNLTQ1. Verify pin compatibility and thermal characteristics when cross-referencing with similar automotive buck regulators from the same manufacturer.