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LMR14030SDDAR

TILMR14030SDDAR

Texas Instruments
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3.5A 8-PowerSOIC (0.154", 3.90mm Width)
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Overview

The LMR14030SDDAR is a step-down buck switching regulator designed to deliver up to 3.5A of output current. It operates over a wide input voltage range from 4V to 40V, featuring a 90mOhm high-side MOSFET to maintain high efficiency across various load conditions. The device utilizes current mode control for simple external compensation and stable operation.

Why Choose This Part

The regulator offers a very low shutdown current of 1uA and an operating quiescent current of 40uA, making it suitable for battery-powered applications. Its integrated frequency synchronization and adjustable soft-start provide engineers with significant control over EMI and inrush current profile.

Applications

Industrial Power Supplies
Ideal for 12V and 24V industrial rails requiring high efficiency and robust thermal management in a compact HSOIC-8 package.
Automotive Aftermarket Accessories
Supports wide input transients up to 40V, making it suitable for unregulated automotive battery systems.
Distributed Power Systems
Used in intermediate bus regulation where a wide input range and adjustable switching frequency (200kHz to 2.5MHz) are required to minimize EMI.

Key Specifications

Function Step-Down
Topology Buck
Output Type Adjustable
Mounting Type Surface Mount
Package / Case 8-PowerSOIC (0.154", 3.90mm Width)
Current - Output 3.5A
Number of Outputs 1
Output Configuration Positive
Frequency - Switching 200kHz ~ 2.5MHz
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier No
Voltage - Input (Max) 40V
Voltage - Input (Min) 4V
Voltage - Output (Max) 28V
Supplier Device Package 8-SO PowerPad
Voltage - Output (Min/Fixed) 0.8V

Getting Started

Designers can utilize TI WEBENCH Power Designer to calculate external component values for the desired output voltage and switching frequency. For physical prototyping, ensure the thermal pad of the HSOIC-8 package is soldered to a large ground plane to manage heat dissipation at the 3.5A maximum current rating.

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