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LM61440 - Low EMI Synchronous Step-Down Converter

Description

The LM61440 is a high-performance, DC-DC synchronous step-down converter.

With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design.

Features

  • Functional Safety-Capable.
  • Documentation available to aid functional safety system design.
  • Optimized for ultra low EMI requirements.
  • Hotrod™ package and parallel input path minimize switch node ringing.
  • Parallel input path minimizes parasitic inductance.
  • Adjustable SW node rise time.
  • Designed for reliable and rugged.

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Full PDF Text Transcription

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LM61440 SNVSBD6C – MAY 2019 – REVISED JUNE 2021 LM61440 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter 1 Features • Functional Safety-Capable – Documentation available to aid functional safety system design • Optimized for ultra low EMI requirements – Hotrod™ package and parallel input path minimize switch node ringing – Parallel input path minimizes parasitic inductance – Adjustable SW node rise time • Designed for reliable and rugged applications – Supports 42-V transients – ±1% total output regulation accuracy – VOUT adjustable from 1 V to 95% of VIN – 0.3-V dropout with 3-A load (typical) • High efficiency power conversion at all loads – 7-µA no load current at 13.5 VIN, 3.3 VOUT – 83% PFM efficiency at 1-mA, 13.
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