Cxlb73134 is a constant current / constant voltage charger chip, which is mainly used for single lithium battery charging. There is no need for external detection resistor, and its internal structure is MOSFET structure, so there is no need for external reverse diode.
The cxlb73134 can adjust the charging current to limit the chip temperature at high power and high ambient temperature. Its charging voltage is fixed at 4.2V, and the charging current can be adjusted by an external resistor. When the floating charge voltage is reached and the charging current drops to 1 / 10 of the setting circuit, the cxlb73134 automatically terminates the charging process. When the input voltage is removed, the cxlb73134 automatically enters the low current mode and draws less than 2ua of current from the battery. When cxlb73134 enters standby mode, the power supply current is less than 25ua.
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[ CXLB73134 ]"
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7.相关产品
产品概述 返回TOP
CXLB73134是恒流/恒压座充充电器芯片，主要应用于单节锂电池充电。无需外接检测电阻，其内部为MOSFET结构，因此无需外接反向二极管。
CXLB73134在大功率和高环境温度下可以调节充电电流以限制芯片温度。它的充电电压固定在4.2V，充电电流可以通过外置一个电阻器进行调节。当达到浮充电压并且充电电流下降到设定电路的1/10时，CXLB73134自动终止充电过程。当输入电压移开之后，CXLB73134自动进入低电流模式，从电池吸取少于2uA的电流。当CXLB73134进入待机模式时，供电电流小于25uA。
CXLB73134还可以监控充电电流，具有电压检测、自动循环充电的特性，并且具有一个指示管脚指示充电终止状态和输入电压状态.
产品特点 返回TOP
◆ 可达500mA的可编程充电电流
◆ 无需外接MOSFET、检测电阻、反向二极管
◆ 恒流/恒压模式操作，具有热保护功能
◆ 可通过USB端口为锂电池充电
◆ 具有1%精度的预设充电电压
◆ 待机模式下电流为20uA
◆ 2.9V涓流充电电压
◆ 软启动限制了浪涌电流
◆ 采用SOT23-5封装
应用范围 返回TOP
◆ 手机、掌上电脑、MP3播放器
◆ 蓝牙耳机
技术规格书（产品PDF) 返回TOP
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品......
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充电管理 |
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型号 |
封装 |
过温保护 |
充电形式 |
静态电流 |
最大充电电流 |
精度 |
空载/浮充电压 |
输入电压 |
|
DIP8 |
Y |
Linear |
3mA |
0.4A |
±1.2% |
4.23V |
5V-8V |
|
|
DIP8 |
Y |
Linear |
3mA |
0.35A |
±1.8% |
4.23V |
5V-8V |
|
|
QIPAI8 |
Y |
Linear |
3mA |
0.3A |
±1.8% |
4.23V |
5V-8V |
|
|
DIP8 |
Y |
Linear |
5mA |
0.5A |
±1.2% |
4.23V |
5V-8V |
|
|
DIP10 |
Y |
Linear |
5mA |
0.5A |
±1.2% |
4.23V |
5V-8V |
|
|
SOP8 |
Y |
Linear |
2mA |
0.4A |
±1.5% |
4.23V |
4.75V-6V |
|
|
SOT23-6 |
Y |
Linear |
220uA |
1A |
±1% |
4.22V |
4.75V-6V |
|
|
SOP8 |
Y |
Linear |
220uA |
1A |
±1% |
4.22V |
4.75V-6V |
|
|
ESOP8 |
Y |
Linear |
220uA |
1A |
±1% |
4.22V |
4.75V-6V |
|
|
SOP8 |
Y |
Linear |
220uA |
1A |
±1% |
4.22V |
4.75V-6V |
|
|
SOT23-5 |
Y |
Linear |
40uA |
0.5A |
±1% |
4.20V |
4.5-6V |
|
