LMR51440FSQDRRRQ1

$1.59

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

SKU:5b4ea43f3da0 Category: Voltage Regulators - DC DC Switching Regulators Brand: Texas Instruments

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Product introduction

LMR51440FSQDRRRQ1 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 LMR51440FSQDRRRQ1

Description：IC REG BUCK ADJ 4A 12WSON
Series：LMR514x0-Q1
Mfr：Texas Instruments
Package：Tape & Reel (TR),Cut Tape (CT)
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 LMR51440FSQDRRRQ1

LMR51440FSQDRRRQ1

Voltage Regulators - DC DC Switching Regulators Overview

The LMR51440FSQDRRRQ1 is an automotive-grade synchronous buck converter from Texas Instruments, designed for high-efficiency power management in demanding environments. It supports an input voltage range of 4 V to 36 V and delivers a continuous output current of 4 A. The device features adjustable switching frequencies between 200 kHz and 1 MHz, allowing optimization for size and performance. It operates within a junction temperature range of -40°C to +150°C and includes programmable soft-start and frequency synchronization capabilities.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Integrated synchronous rectification with low on-resistance switches for high efficiency across load ranges
Programmable switching frequency allows external clock synchronization to reduce system noise
Automotive qualification ensures reliability under harsh thermal and electrical conditions

Voltage Regulators - DC DC Switching Regulators Applications

Infotainment systems requiring stable power rails
Digital cockpit displays and instrument clusters
Advanced driver assistance systems (ADAS) power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the complete part number including suffixes against official Texas Instruments documentation to ensure correct package, temperature grade, and tape/reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to ordering. Cross-reference the manufacturer date code and lot traceability if required by your quality management system standards.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing for automotive applications requiring a 36V input interface and 4A output capability. Consider the WSON-12 package for compact board space constraints. Evaluate the need for external synchronization or fixed frequency operation based on electromagnetic interference constraints in the final assembly environment.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the LMR514x0-Q1 family of automotive synchronous buck converters. It shares architectural similarities with other members like the LMR51425 and LMR51450 but offers specific current handling characteristics suited for mid-power automotive loads. The FSQD suffix indicates the specific automotive grade and packaging configuration.