Cxlb7251 is a complete single-chip lithium-ion battery constant current / constant voltage linear power management chip. Its sot package and few peripheral components are very suitable for portable products, and cxlb7251 is specially designed for USB power supply specifications. Based on the internal MOSFET structure, there is no need for external induction resistance and isolation diode. When the external environment temperature is too high or working at high power, the thermal feedback can adjust the charging current to reduce the chip temperature. The charging voltage is fixed at 4.2V, and the charging current can be set through the external resistance. When the charging current drops to 1 / 10 of the setting value after reaching the final floating charge voltage, the cxlb7251 will automatically terminate the charging cycle. When the input terminal (adapter or USB power supply) is unplugged, the cxlb7251 will automatically enter the low current state, and the battery leakage current will drop below 2 μ a.
The cxlb7251 can also be set to stop working to reduce the power supply current to 25 μ a. Other features include: charging current monitoring, undervoltage locking, automatic recharging and status pins to show the end of charging
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目录 1.产品概述 2.产品特点 一,产品概述(General Description) |
五,电路原理图
六.产品PDF文档
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七,功能概述
|
参数 |
标号 |
最大额定值 |
单位 |
|
|
输入电压 |
Vcc |
VSS-0.3～VSS+10 |
V |
|
|
PROG 端电压 |
Vprog |
VSS-0.3～Vcc+0.3 |
||
|
BAT 端电压 |
||||
|
Vbat |
Vss-0.3～7 |
|||
|
CHAG 端电压 |
||||
|
Vchrg |
VSS-0.3～VSS+10 |
|||
|
容许功耗 |
||||
|
PD |
SOT-23-6L |
250 |
mW |
|
|
BAT 端电流 |
Ibat |
500 |
mA |
|
|
PROG 端电流 |
Iprog |
800 |
uA |
|
|
工作外围温度 |
Topa |
-40～+85 |
°C |
|
|
存储温度 |
Tstr |
-65～+125 |
||
八,相关产品 更多同类产品......
|
线性单节锂电充电IC |
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|
产品型号 |
输出电压 |
输入电压 |
最大充电电流 |
充电截止电压 |
精度 |
涓流充电截止电压 |
功耗 |
封装形式 |
|
4.2V |
4.5-12V |
200mA |
4.2V |
±1% |
2.9V |
55uA |
SOT23-6 |
|
|
4.2V |
4.5-6.0V |
300mA |
4.2V |
±1% |
2.9V |
350uA |
DFN2*3-8 |
|
|
4.2V |
4.25-6.5V |
200mA |
4.2V |
±1% |
2.9V |
350uA |
DFN2*3-8 |
|
|
4.2V |
4.25-6.5V |
200mA |
4.2V |
±1% |
2.9V |
150uA |
SOT-25 |
|
|
4.2V |
4.25-6.5V |
1.2A |
4.2V |
±1% |
2.9V |
25uA |
ESOP8 |
|
|
4.2V |
4.5-12V |
1A |
4.2V |
±1% |
2.9V |
55uA |
DFN3*3-8 |
|
|
3.6V/4.2V |
4.25-6.5V |
1.2A |
3.6V-4.2V |
±1% |
2.9V |
25uA |
ESOP8 |
|
|
4.2V |
4.5V-8V |
1A |
4.2V |
±1% |
2.9V |
55uA |
DFN3*3-8 |
|
|
4.2V |
4.25-6.5V |
800mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.2V |
4.25-6.5V |
800mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.2V |
4.25-6.5V |
500mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.35V |
4.25-6V |
800mA |
4.35V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.2V |
4.25-6.5V |
800mA |
4.2V |
±1% |
2.9V |
85uA |
SOT23-5 |
|
|
3.7V |
4-7V |
500mA |
3.7V |
±1% |
2.5V |
250uA |
SOT23-5 |
|
|
2.8V |
4-7V |
500mA |
2.8V |
±1% |
2.0V |
250uA |
SOT23-5 |
|
|
4.35V |
4.25-6.5V |
800mA |
4.35V |
±1% |
2.9V |
85uA |
SOT23-5 |
|
|
4.2V |
4.0-8.0V |
1200mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.0-8.0V |
1200mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.35V |
4.0-8.0V |
1200mA |
4.35V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.25-7.0V |
1000mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.25-7.0V |
1000mA |
4.2V |
±1% |
2.9V |
50uA |
DFN2X2-6L |
|
|
4.2V |
4.25-6.0V |
750mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-6 |
|
|
4.2V |
4.25-6.0V |
800mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-6 |
|
|
4.35V |
4.5-6.5V |
700mA |
4.35V |
±1% |
2.9V |
80uA |
SOT-26 |
|
|
4.2V |
4.25-6.5V |
500mA |
4.2V |
±1% |
2.9V |
25uA |
SOT-26 |
|
|
4.2V |
4.5-18V |
800mA |
4.2V |
±1% |
2.9V |
70uA |
SOT-26 |
|
|
4.2V |
3.8-6.5V |
1A/0.5A |
4.2V |
±1% |
2.9V |
450uA |
ESOP8/SOP8 |
|
|
4.2V |
4.5-7V |
扩流3A |
4.2V |
±1% |
2.9V |
1mA |
SOP-8 |
|
|
4.2V |
4.5-12V |
700mA |
4.2V |
±1% |
2.9V |
55uA |
SOT23-5 |
|
|
4.2V |
4.5-12V |
700mA |
4.2V |
±1% |
2.9V |
55uA |
SOT23-6 |
|
|
4.2V |
4.25-6.5V |
1000mA |
4.2V |
±1% |
2.9V |
50uA |
ESOP8 |
|
|
4.2V |
4.5-12V |
1000mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.5-5.5V |
800mA |
4.2V |
±1% |
2.9V |
48uA |
DFN3*3-10 |
|
|
4.2V |
4.5V-18V |
1.3A |
4.2V |
±1% |
2.9V |
48uA |
SOP8 |
|
|
4.2V |
4.5-18V |
1.6A |
4.2V |
±1% |
2.9V |
7uA |
SOP-8 |
|
