The CXLB7257 CXLB7257B is a complete battery charger controller for one (4.22V) cell lithium-ion battery. The CXLB7257 CXLB7257B provides a small, simple and efficient solution to fast charge Li-ion battery. An external sense resistor sets the charge current with high accuracy. An internal resistor divider and precision reference set the final float voltage to 4.22V per cell with ±1% accuracy. When the input supply is removed, the CXLB7257 CXLB7257B automatically enters a low current sleep mode, dropping the battery drain current to 4μA. After the charge cycle ends, if the battery voltage drops below 4.05V per cell, a new charge cycle will automatically begin
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产品概述 返回TOP
The CXLB7257 CXLB7257B is a complete battery charger controller for one (4.22V) cell lithium-ion battery. The CXLB7257 CXLB7257B provides a small, simple and efficient solution to fast charge Li-ion battery. An external sense resistor sets the charge current with high accuracy. An internal resistor divider and precision reference set the final float voltage to 4.22V per cell with ±1% accuracy. When the input supply is removed, the CXLB7257 CXLB7257B automatically enters a low current sleep mode, dropping the battery drain current to 4μA. After the charge cycle ends, if the battery voltage drops below 4.05V per cell, a new charge cycle will automatically begin. The CXLB7257 CXLB7257B is available in the 8-lead SOP Package
产品特点 返回TOP
Input Supply Range: 4.7V ～ 6V
High Efficiency Current Mode PWM Controller
End - Charge - Current Detection Output
Constant Switching Frequency for Minimum Noise
±1% Charge Voltage Accuracy
Automatic Battery Recharge
Automatic Shutdown When Input Supply is Removed
Automatic Trickle Charging of Low Voltage Batteries
Battery Temperature Sensing
Stable with Ceramic Output Capacitor
8-Lead SOP Package
应用范围 返回TOP
Charging Docks
Handheld Instruments
Portable Computers
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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单节锂电池充电管理IC |
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Model |
VIN (V) |
VOUT (V) |
IOUT |
Package |
ISLEEP |
|
4.7V ～ 6V |
4.22V |
1A |
SOP-8L |
20 |
|
|
4.7V ～ 6V |
4.22V |
1.5A |
SOP-8L |
20 |
|
|
4.7V ～ 6V |
4.22V |
1.8A |
SOP-8L |
20 |
|
|
4.7V ～ 6V |
4.22V |
700mA |
SOT-23 |
20 |
|
|
4.7V ～ 6V |
4.22V |
1000mA |
SOT-23 |
20 |
|
|
4.7V ～ 6V |
4.2V |
1A |
SOT-23 |
20 |
|
|
4.7V ～ 6V |
4.22V |
1000mA |
SOT-23 |
20 |
|
|
4.7V ～ 6V |
4.22V |
900mA |
SOP8 |
20 |
|
|
4.7V ～ 6V |
4.22V |
900mA |
SOP8 |
20 |
|
|
4.5~5.5 |
4.2V |
800mA |
DFN3*3-10L |
20 |
|
