CXLB7202C CXLB7202是一个完整的恒定电流/恒定电压单电池锂离子电池线性充电器。它的包装和低外部组件数量使CXLB7202C CXLB7202非常适合便携式应用在USB电源规格范围内工作。不需要外部感测电阻器，并且由于内部MOSFET结构，不需要阻塞二极管。这个充电电压固定在4.2V，充电电流可编程外部有一个电阻器。当充电电流在最终浮充后降至编程值的1/10
达到电压。
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目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图 6.电路原理图
7.功能概述 8.相关产品
一,产品概述(General Description) 
The CXLB7202C CXLB7202 is a complete constant-current/constant voltage
linear charger for single cell lithium-ion batteries. Its package and low external
component count make the CXLB7202C CXLB7202 ideally suited for portable applications.Furthermore, theCXLB7202C CXLB7202 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. The
charge voltage is fixed at 4.2V, and the charge current can be programmed
externally with a single resistor.
The CXLB7202C CXLB7202 automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed value after the final float
voltage is reached.
The CXLB7202C CXLB7202 converters are available in the industry standard
DFN3*3-10L power packages (or upon request).
二.产品特点(Features)
Programmable Charge Current up to 800mA
No MOSFET, Sense Resistor or Blocking Diode Required
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
Automatic Recharge
2.9V Trickle Charge Threshold
Available in DFN3*3-10L Package
三,应用范围 (Applications)
Charger for Li-Ion Coin Cell Batteries
Portable MP3 Players, Wireless Headsets
Bluetooth Applications
Multifunction Wristwatches
四.技术规格书下载（产品PDF）
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！
五,产品封装图 (Package)
六.电路原理图
七,功能概述
Input Supply Voltage (VIN)…...…………....................................................................... –0.3V ～ 7V
CHRG1, CHRG2 .......................................................................................... –0.3℃ ～ VIN + 0.3V
VOUT, ISET................................................................................................................... –0.3V ～ 7V
VOUT Pin Current .................................................................................................................. 800mA
Maximum Junction Temperature .......................................................................................... +150℃
Operating Ambient Temperature Range (Note 2)................................................... –40℃ ～ +85℃
Storage Temperature Range …………………………………………….................. –65℃ ～ +125℃
Lead Temperature (Soldering, 10 sec)................................................................................. +265℃
八,相关芯片选择指南
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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 |
|
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