LM53625LQURNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM53625LQURNLRQ1 is an automotive-qualified 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 5 V output at up to 2.5 A. The device integrates a 2.1 MHz fixed switching frequency, adjustable soft-start, and programmable frequency synchronization. It features low quiescent current of 6 uA, thermal shutdown, and overcurrent protection. The component is housed in a 22-pin VQFN-HR package and supports operation temperatures from -40°C to +125°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for robust performance in vehicle environments.
• Integrated synchronous rectification provides high efficiency across wide load and line conditions.
• Programmable switching frequency allows optimization for external component size or noise immunity.
• Built-in protection mechanisms include thermal shutdown and cycle-by-cycle current limiting.

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution
• Instrument cluster voltage regulation
• Body control module power supplies
• Telematics unit biasing

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'L' against the manufacturer datasheet to confirm it denotes a valid tape-and-reel packaging option rather than a functional variant. Ensure the order quantity aligns with standard reel sizes. Confirm RoHS compliance status and moisture sensitivity level requirements prior to finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this part when a fixed 5 V rail is required for automotive loads within the 36 V input envelope. The 2.5 A capability suits moderate power applications where board space is constrained by the compact VQFN package. Consider the 2.1 MHz frequency for smaller passive components compared to lower-frequency alternatives.

Voltage Regulators - DC DC Switching Regulators Part Context

This component belongs to the LM53625-Q1 family of high-efficiency synchronous buck converters designed specifically for automotive electronics. The series emphasizes small solution size and high reliability, utilizing advanced power stage technology to minimize external component count while maintaining stable regulation under varying automotive electrical conditions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM53625MQURNLRQ1: Functional equivalent with adjustable output voltage instead of fixed 5 V; verify if fixed output meets design needs.

Voltage Regulators - DC DC Switching Regulators FAQ

Is the LM53625LQURNLRQ1 suitable for harsh automotive environments?

Yes, it is qualified to AEC-Q100 standards and rated for junction temperatures up to 150°C, ensuring reliability in demanding automotive applications.

What is the maximum output current for the fixed 5 V version?

The device supports a continuous output current of up to 2.5 A when configured for a fixed 5 V output.