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Battery Charge Controllers | NCP1851
开关电池充电器，1.6 A，带功率路径管理
Obsolete
概览
NCP1851 是一款可全编程的单锂离子电池开关电池充电器，适用于从 USB 标准输入电源和交流适配器电源进行充电。该器件集成了同步 PWM 控制器、功率 MOSFET 和整个充电周期监控，包括软件监控下的安全功能。可在系统和电池之间放置一个可选的电池 FET，以便隔离系统和为系统供电。在充电周期期间，会监控 NCP1851 结温度和电池温度，并通过 I2C 设置对电流和电压进行相应修改。充电器活动和状态通过连接系统的专门引脚进行报告。输入引脚会针对过电压进行保护。
- High Efficiency Charging Line-up
- Smart Phone
- Handheld Devices
- PDA
- Tablets
- 1.6 A buck converter with integrated pass devices
- Input current limiting to comply to USB standard
- 500mA boosted supply for USB OTG peripherals
- Dynamic power path with external battery FET
- High accuracy voltage and current regulation
- Input over voltage protection up to +28 V
- Reverse leakage protection prevents battery discharge
- Protected USB Transceiver supply switch
- Factory mode
- Battery temperature sensing for safe operation (JEITA)
- Flag output for charge status and interrupts
- IC Control bus up to 3.4 MHz
- Safety timers
- Silicon temperature supervision for optimized charge cycle
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