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400mV to 5.5V Input, 500mA nanoPower Boost Converter with Short-Circuit Protection and Automatic Pass-Through Mode

Industry’s First NanoPower Boost with Integrated Short-Circuit Protection and Automatic Pass-Through Mode

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主要特征

应用/用途

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主要特征

  • 350nA Quiescent Supply Current
  • Output Short-Circuit Protection
  • Automatic Pass-Through Mode
    • Overcurrent and Overtemperature Protected
  • 95% Peak Efficiency, 89% or Higher at 500μA
  • Typical 300mA Output Current at 5.0V (VIN > 3.6V)
  • 400mV to 5.5V Input Voltage Range
  • 880mV Minimum Startup Voltage
  • Single Resistor-Adjustable Output Voltage
    • 2.3V to 5.2V Output Voltage Range with 100mV Steps
    • 5.4V Output Voltage Setting Available
  • 500mA Peak Inductor Current Limit
  • Active Discharge Feature
  • Thermal Shutdown Protection
  • Multiple Package Options:
    • 1.58mm x 0.89mm, 0.4mm Pitch, 6-Bump (3 x 2) WLP
    • 2mm x 2mm, 8-Pin TDFN
  • -40°C to +125°C Operating Temperature Range

应用/用途

  • Medical
  • Clinical Instrumentation
  • Battery-Powered Medical Equipment
  • Industrial
  • Emergency Lighting
  • IoT Sensors
  • Consumer
  • Wi-Fi® Module
  • Near-Band IoT
  • Wearable Devices

描述

The MAX17227J is a nanoPower boost converter capable of delivering a load up to 500mA peak inductor current and offering automatic pass-through operation, True Shutdown™, cycle-by-cycle inductor current limit, short-circuit, and thermal-protection features. The MAX17227J offers ultra-low quiescent current, small total solution size, and high efficiency throughout the load and line range. The MAX17227J is ideal for battery-powered applications where long battery life is a must and high efficiency is required at all power levels.

The MAX17227J utilizes an adaptive on-time, pulse-frequency-modulation (PFM) control scheme that consumes ultra-low quiescent current. The MAX17227J features True Shutdown mode, where the output disconnects from the input with no forward or reverse current. The active discharge resistor feature pulls the charge from the output capacitor.

The MAX17227J is offered in space-saving and cost-effective 1.58mm x 0.89mm, 6-bump WLP (3 x 2, 0.4mm pitch) and 2mm x 2mm, 8-pin TDFN packages. The operating temperature range is from -40°C to +125°C.

简化框图

MAX17227J: Typical Operating Circuit MAX17227J: Typical Operating Circuit Zoom icon

技术文档

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