LM53625NQRNLTQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LM53625NQRNLTQ1 is a synchronous step-down DC/DC converter from Texas Instruments, designed for automotive applications with AEC-Q100 qualification. It operates within an input voltage range of 3.9 V to 36 V and provides a fixed 2.5 V output at up to 3.5 A load current. The device integrates internal high-side and low-side N-channel MOSFETs and supports a fixed switching frequency of 2.1 MHz. Key electrical parameters include a maximum quiescent current of 6 µA in shutdown mode and an operating junction temperature range from -40°C to +150°C. It is housed in a 22-pin VQFN-HR package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated synchronous rectification using internal high-side and low-side N-channel MOSFETs for efficient power conversion.
• Automotive-grade reliability certified under the AEC-Q100 standard for harsh environment operation.
• Supports wide input voltage ranges suitable for 12-V and 24-V automotive systems.
• Compact thermal performance enabled by the exposed pad VQFN-HR package design.

Voltage Regulators - DC DC Switching Regulators Applications

• Power distribution units in automotive infotainment systems
• Telematics control module power supplies
• Body control module (BCM) voltage regulation
• ADAS sensor interface power conditioning

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'N' indicates the fixed 2.5 V output variant, as other suffixes may denote adjustable outputs or different pin configurations. Confirm the 'Q1' designation aligns with required automotive quality standards. Ensure the 'HR' package type matches the PCB footprint requirements. Cross-reference the datasheet revision date to ensure compatibility with latest manufacturing notices.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 2.5 V rail is required for automotive loads drawing up to 3.5 A. The 2.1 MHz switching frequency allows for smaller external inductors compared to lower-frequency alternatives. Consider the 150°C junction temperature rating for high-ambient environments. Verify that the 3.9 V minimum input voltage meets the system's lowest operating battery voltage conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM536xx-Q1 family of synchronous buck converters. It shares architectural similarities with the LM53635 and LM53601 but differs in output configuration and current capabilities. The family targets compact automotive power designs requiring high efficiency and robust thermal management in small form factors.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

LM53625QRNLRQ1: Alternative tape-and-reel packaging option with identical electrical specifications.

Voltage Regulators - DC DC Switching Regulators FAQ

What is the fixed output voltage of the LM53625NQRNLTQ1?

The device provides a fixed output voltage of 2.5 V.

Does the LM53625NQRNLTQ1 support adjustable output voltages?

No, the 'N' suffix denotes a fixed 2.5 V output. Adjustable versions are available with different suffixes in the same family.

What is the maximum continuous output current?

The converter supports a maximum continuous output current of 3.5 A.