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LM5143RHAR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM5143RHAR product

LM5143RHAR

DC DC Switching Controllers

dual buck controller65 V inputsynchronous buckpeak current modeinterleaved powerVQFN-40

LM5143RHAR is a dual synchronous buck controller for wide-input power rails requiring external MOSFETs and inductors. It supports independent outputs or a two-phase interleaved output configuration.

Best for

  • Wide-input dual-output buck converters
  • Interleaved high-current point-of-load converters
  • Industrial and communications power rails

Avoid if

  • An integrated converter with internal MOSFETs is required
  • The design cannot support careful external power-stage and layout work

Check before use

  • Confirm maximum VIN transient margin versus the 70 V absolute maximum rating
  • Select external MOSFETs compatible with approximately 5 V gate drive
  • Validate current-limit accuracy and inductor saturation margin
  • Confirm compensation and EMI performance on the final PCB

Key specifications

Input voltage
3.5 V to 65 V
Channels
2
Switching frequency
100 kHz to 2.2 MHz
Output setting
0.6 V to 55 V adjustable; fixed 3.3 V or 5 V
Package
40-pin VQFN, 6 mm × 6 mm × 1 mm max

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level 3, 260 °C, 168 hr
ECCN
-
HTSUS
-

Application

Industrial automation and controlWireless infrastructure powerHigh-current point-of-load power

Datasheet

snvaa85

800 KB

Datasheet AI

CAD Models

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PCB Footprint
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3D Model
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Where to Buy

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Alternative components

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Design and risk insights

Questions & answers

LM5143RHAR is a Texas Instruments dual-channel synchronous buck DC/DC controller in a 40-pin 6 mm × 6 mm VQFN package. It operates from 3.5 V to 65 V and drives external N-channel MOSFETs.