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Evaluation Kit for the MAX77301/MAX77301A

产品详情

主要特征

简化框图

Technical Docs

数据资料 Evaluation Kit for the MAX77301/MAX77301A Jul 15, 2021

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主要特征

  • Enables Charging from a Micro-B USB Connector
  • USB Enumeration without Host-Processor Intervention
  • Automatic Detection of Adapter Type or USB Port
  • Dual-Speed USB Operation (Full Speed or Low Speed)
  • Input Overvoltage Protection to 16V
  • Smart Power Selector
    • Automatic Current Sharing Between Battery Charging and System
    • Operates with Discharged or No Battery
  • LED Indicators
  • NTC Monitoring of Battery Temperature
  • JEITA-Compliant Charging Profile
  • Thermal-Charge Regulation Prevents the IC from Overheating

应用/用途

  • 蓝牙耳机、PDA和MP3播放器
  • 其他手持设备

描述

The MAX77301 evaluation kit (EV kit) is a fully assembled and tested PCB for evaluating the MAX77301 dual-path lithium-ion (Li+) battery charger with USB enumeration and automatic adapter-type detection features. The EV kit is powered from a USB port or dedicated charger with automatic detection of adapter type and USB enumeration capability.

The IC features a Smart Power Selector™ feature that makes the best use of limited USB or adapter power. Battery charge current is set independent of the inputcurrent limit. Power not used by the system charges the battery. This allows the application to operate without a battery, discharged battery, or dead battery. Automatic input selection switches the system between battery, battery assist, and external power modes.

The EV kit provides LED indicators for adapter-type detection (active-low UOK), external power-on (active-low EXT_PWRON), charging status (active-low CHG_STAT), external power-source current capability (CHG_TYPE), and interrupts (active-low IRQ). The EV kit also features an NTC thermistor for thermal protection and JEITA-compliant* charging.

The EV kit is configured for full-speed USB by default, but can be configured for low-speed USB by removing the crystal oscillator and adjusting jumper default settings.

简化框图

Technical Docs

数据资料 Evaluation Kit for the MAX77301/MAX77301A Jul 15, 2021

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