电瓶充电器不停机是怎么回事(电瓶充电器不停机是怎么回事?)
产品描述TC4056A是一款完整的单节锂离子电池采用恒定电流/恒定电压线性充电器。其底部带有散热片的ESOP8/DIP8封装与较少的外部元件数目使得TC4056A成为便携式应用的理想选择。
TC4056A可以适合USB电源和适配器电源工作。由于采用了内部PMOSFET架构,加上防倒充电路,所以不需要外部隔离二极管。热反馈可对充电电流进行自动调节,以便在大功率操作或高环境温度条件下对芯片温度加以限制。充电电压固定于4.2V,而充电电流可通过一个电阻器进行外部设置。
当充电电流在达到最终浮充电压之后降至设定值1/10时,TC4056A将自动终止充循环。当输入电压(交流适配器或USB电源)被拿掉时,TC4056A自动进入一个低电流状态,将电池漏电流降至2uA以下。TC4056A在有电源时也可置于停机模式,以而将供电电流降至55uA。
TC4056A的其他特点包括电池温度检测、欠压闭锁、自动再充电和两个用于指示充电、结束的LED状态引脚。
特点高达1000mA的可编程充电电流无需MOSFET、检测电阻器或隔离二极管用于单节锂离子电池、采用SOP封装的完整线性充电器恒定电流/恒定电压操作,并具有可在无过热危险的情况下实现充电速率最大化的热调节功能精度达到±1.5%的4.2V预设充电电压用于电池电量检测的充电电流监控器输出自动再充电充电状态双输出、无电池和故障状态显示C/10充电终止待机模式下的供电电流为55uA2.9V涓流充电器件版本软启动限制了浪涌电流电池温度监测功能采用8引脚封装(ESOP-8,DIP-8)产品应用移动电话、PDA电子词典MP3、MP4播放器GPS数码相机便携式设备、各种充电器绝对最大额定值输入电源电压(Vcc):-0.3V~8VPROG:-0.3V~Vcc+0.3VBAT:-0.3V~7VGHRG:-0.3V~10VSTDBY:-0.3V~7VTEMP:-0.3V~7VCE:-0.3V~7VBAT短路持续时间:连续BAT引脚电流:1200mAPROG引脚电流:1200uA最大结温:145℃工作环境温度范围:-40℃~85℃贮存温度范围:-65℃~125℃引脚温度(焊接时间10秒):260℃![](https://p3-sign.toutiaoimg.com/pgc-image/0fda2d4fc07d479e94d962a1f692f325~tplv-tt-large.image?x-expires=1969899553&x-signature=v1YkV88xXrqaqU6p2PXHIKT1Y1w%3D)
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深圳市恒佳盛电子有限公司成立于2004年08月01日,一直专注于电源管理IC和MOS管