LM53625NQRNLRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM53625NQRNLRQ1 is an automotive-qualified synchronous buck 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 switching frequency, adjustable via an external resistor. Key electrical parameters include a typical quiescent current of 6 uA and operation across a junction temperature range of -40°C to +150°C. It utilizes a 22-pin VQFN-HR package for compact surface-mount implementation.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Automotive-grade reliability compliant with AEC-Q100 standards
• Integrated high-side and low-side power switches for efficient step-down conversion
• Fixed internal feedback network simplifies design for standard output voltages
• Supports external frequency synchronization to optimize EMI performance

Voltage Regulators - DC DC Switching Regulators Applications

• Infotainment system power distribution
• Instrument cluster power supplies
• Body control module (BCM) regulation
• Telematics unit voltage conversion

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' indicates the fixed 5V output variant distinct from adjustable versions. Confirm the 'L' suffix corresponds to the lead-free RoHS-compliant packaging. Ensure the 'RQ1' designation matches the required automotive qualification level for your specific application environment before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 5V rail is required within the automotive domain. The 2.5A current capability suits moderate load applications without requiring external passives for high-current handling. The 2.1MHz frequency allows for smaller inductor selection compared to lower-frequency alternatives, optimizing board space constraints in dense automotive PCB layouts.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM53625-Q1 family of wide-input synchronous buck converters. It shares architectural similarities with other members like the LM53625MQURNLRQ1 but differs in output configuration. The family targets automotive applications requiring high efficiency and small solution size under varying input voltage conditions typical of vehicle electrical systems.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-to-pin replacements within the same family include LM53625MQURNLRQ1 if adjustable output is acceptable. For fixed 5V requirements, verify compatibility with LM536355QRNLTQ1, noting differences in output current ratings and thermal characteristics between the 2.5A and 3.5A variants.