CXLB7246MR是一款适用于单电池锂离子电池的完整恒流恒压线性充电器。它的SOT封装和低外部组件数量使得CXLB7246MR非常适合便携式应用，而且，CXLB7246MR是专门设计用于USB电源规格的。由于内部MOSFET结构，不需要外部感测电阻，也不需要阻塞二极管。热反馈调节充电电流，以在高功率运行或高环境温度下限制模具温度。充电电压固定在4.2V，充电电流可通过一个电阻器进行外部编程。当达到最终浮充电压后，充电电流降至编程值的1/10时，CXLB7246MR自动终止充电循环。当卸下输入电源（墙壁适配器或USB电源）时，CXLB7246MR将自动进入低电流状态，电池放电电流降至小于2uA。这个
CXLB7246MR可进入关机模式，将电源电流降至50uA。其他功能包括电池温度监视器、欠压锁定、自动充电和两个状态引脚，指示充电和充电终止
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[ 产品资料下载 ]
目录
产品概述 返回TOP
The CXLB7246MR is a complete constant current & constant voltage linear charger for single cell lithium-ion batteries. Its SOT package and low external component count make the CXLB7246MR ideally suited for portable applications.Furthermore, the CXLB7246MR is specifically designed to work within USB power specifications.
No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The CXLB7246MR automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the CXLB7246MR automatically
enters a low current state, dropping the battery drain current to less than 2uA. The
CXLB7246MR can be put into shutdown mode, reducing the supply current to 50uA.
Other features include Battery temperature monitor, under-voltage lockout, automatic
recharge and two status pins to indicate charge and charge termination
产品特点 返回TOP
Programmable Charge Current Up to 200mA
No MOSFET, Sense Resistor or Blocking Diode Required
Complete Linear Charger in SOT Package for
single Cell Lithium-Ion Batteries
Constant-Current/Constant-Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
Charges Single Cell Li-Ion Batteries Directly from USB Port
Preset 4.2V Charge Voltage with ±1% Accuracy
Charge Current Monitor Output for Gas Gauging
Automatic Recharge
Charge state pairs of output, no battery and fault
status display
C/10 Charge Termination
50uA Supply Current in Shutdown
2.9V Trickle Charge Threshold
Soft-Start Limits Inrush Current
Battery temperature monitoring function ESD HBM 8KV
Available in SOT23-5 Package
应用范围 返回TOP
Wearable device
Small capacity battery charger
application Bluetooth、GPS Applications
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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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 |
|
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