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
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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 |
|
