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36V, 300mA, Buck Converter with 1.1μA IQ

Wide VIN Range with Low IQ, High Duty Cycle and Small Solution Size

产品详情

主要特征

应用/用途

简化框图

技术文档

数据资料 36V, 300mA, Buck Converter with 1.1μA IQ Oct 20, 2020

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主要特征

  • Flexible Power for Systems That Require a Wide Input Voltage Range
    • VIN Range: 3.5V to 36V
    • Up to 300mA Output Current
    • Fixed 3.3V Output Voltage
    • 98% (Max) Duty Cycle Operation with Low Dropout
    • Operates from 5V, 12V, or 20V USB Type-C Input Power
    • Operates from 2S, 3S, or 4S Li-Ion Battery
  • Minimizes Power Consumption and Extends Battery Life
    • 1.1µA Quiescent Current
    • 86% Peak Efficiency at 12VIN, 3.3VOUT
  • Minimizes Solution Size
    • 1.7MHz Operating Frequency
    • Small 2.0mm x 2.5mm x 0.75mm 10-Pin TDFN Package
  • Robust Solution
    • Short-Circuit, Thermal Protections
    • 6.67ms Internal Soft-Start Minimizes Inrush Current
    • Current-Mode Control Architecture
    • Up to 42V Input Voltage Tolerance

应用/用途

  • Portable Devices Powered from 2s, 3s, or 4s Li+ Batteries
  • USB Type-C Devices
  • Point-of-Load Applications

描述

The MAX77597 is a small, synchronous buck converter with integrated switches. The device is designed to deliver up to 300mA with input voltages from 3.5V to 36V, while using only 1.1µA quiescent current at no load (fixed-output version). Voltage quality can be monitored by observing the active-low RESET signal. The device can operate near dropout by running at 98% duty cycle, making it ideal for battery-powered applications.

The device offers fixed 3.3V. Frequency is fixed at 1.7MHz, which allows for small external components and reduced output ripple. The device offers both forced-PWM and skip modes of operation, with ultra-low quiescent current of 1.1µA in skip mode.

The MAX77597 is available in a small (2mm x 2.5mm) 10-pin TDFN package and operates across the -40°C to +85°C temperature range.

简化框图

MAX77597: Typical Application Circuit MAX77597: Typical Application Circuit Zoom icon

技术文档

数据资料 36V, 300mA, Buck Converter with 1.1μA IQ Oct 20, 2020

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心