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Maxim产品 - MAX1737介绍

MAX1737 - 独立的开关模式锂离子电池充电控制器

MAX1737是Maxim美信半导体公司的一款电池管理产品，MAX1737是独立的开关模式锂离子电池充电控制器，本站介绍了MAX1737的封装应用图解、特点和优点、功能等，并给出了与MAX1737相关的Maxim元器件型号供参考。

MAX1737 - 独立的开关模式锂离子电池充电控制器 - 电池管理 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX1737 is a switch-mode lithium-ion (Li+) batterycharger that charges one to four cells. It provides aregulated charging current and a regulated voltagewith only a ±0.8% total voltage error at the battery terminals.The external N-channel switch and synchronousrectifier provide high efficiency over a wide input voltagerange. A built-in safety timer automatically terminatescharging once the adjustable time limit has beenreached.

The MAX1737 regulates the voltage set point and chargingcurrent using two loops that work together to transitionsmoothly between voltage and current regulation. Anadditional control loop monitors the total current drawnfrom the input source to prevent overload of the inputsupply, allowing the use of a low-cost wall adapter.

The per-cell battery voltage regulation limit is setbetween +4.0V and +4.4V and can be set from one tofour by pin strapping. Battery temperature is monitoredby an external thermistor to prevent charging if the batterytemperature is outside the acceptable range.

The MAX1737 is available in a space-saving 28-pinQSOP package. Use the evaluation kit (MAX1737EVKIT)to help reduce design time.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Stand-Alone Charger for Up to Four Li+ Cells
  • ±0.8% Accurate Battery Regulation Voltage
  • Low Dropout: 98% Duty Cycle
  • Safely Precharges Near-Dead Cells
  • Continuous Voltage and Temperature Monitoring
  • < 1µA Shutdown Battery Current
  • Input Voltage Up to +28V
  • Safety Timer Prevents Overcharging
  • Input Current Limiting
  • Space-Saving 28-Pin QSOP
  • 300kHz PWM Oscillator Reduces Noise
  • 90% Conversion Efficiency
    • 热门应用
  • 台式摇篮架充电器
  • 手持式仪表(PDA、掌上电脑)
  • Li+电池组
  • 笔记本电脑
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