LMR51440SQDRRRQ1

$0.80

Description：IC REG BUCK ADJ 4A 12WSON
Series：LMR514x0-Q1
Mfr：Texas Instruments
Package：Tape & Reel (TR)

SKU:b33e732033fd Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LMR51440SQDRRRQ1 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC REG BUCK ADJ 4A 12WSON. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for LMR51440SQDRRRQ1

Description：IC REG BUCK ADJ 4A 12WSON
Series：LMR514x0-Q1
Mfr：Texas Instruments
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：4V
Voltage - Input (Max)：36V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：28V
Current - Output：4A
Frequency - Switching：200kHz ~ 1MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：12-WFDFN Exposed Pad
Supplier Device Package：12-WSON (3x3)
Grade：Automotive
Qualification：AEC-Q100

Voltage Regulators - DC DC Switching Regulators datasheet and documents for LMR51440SQDRRRQ1

LMR51440SQDRRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51440SQDRRRQ1 is an automotive-grade synchronous buck converter from Texas Instruments. It operates with an input voltage range of 3 V to 36 V and delivers a maximum output current of 4 A. The device supports adjustable switching frequencies between 200 kHz and 2.2 MHz. It features a low quiescent current of 600 nA in standby mode. The output voltage is adjustable from 1 V to 34 V. It functions within a junction temperature range of -40°C to +150°C and utilizes a WSON-12 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated synchronous rectification for high efficiency
Automotive qualification compliant with AEC-Q100 standards
Low standby current consumption for battery preservation
Wide input voltage capability for flexible system design

Voltage Regulators - DC DC Switching Regulators Applications

Automotive infotainment systems
Telematics control units
Body electronics power distribution
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 revision matches project requirements. Cross-reference the datasheet for any recent product change notices or lifecycle status updates before finalizing procurement plans.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive environments requiring robust thermal performance up to 150°C. The wide input range accommodates various vehicle bus architectures. Ensure external component selection supports the chosen switching frequency to maintain stability and meet electromagnetic interference limits.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR514xx family of simple switcher converters designed for automotive applications. It integrates power switches and control logic into a compact footprint, reducing the overall solution size compared to discrete designs. The family emphasizes ease of use and reliability in harsh operating conditions.