可编程充电电流1000毫安CXLB73124单电池锂离子电池的完整恒流恒压线性充电器热反馈调节充电电流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

CXLB73124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PSOP8包和较低的外部组件数量使CXLB73124非常适合便携式应用。此外，CXLB73124可以在USB和墙壁适配器中工作。由于内部PMOSFET结构，无需阻塞二极管，并具有防止负电荷电流电路。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，CXLB73124自动终止充电循环。CXLB73124其他功能包括电流监视器、欠压锁定、自动充电和两个状态引脚，用于指示充电终止和输入电压的存在。

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXLB73124 is a complete constant - current & constant-voltage linear charger for single cell lithium-ion batteries. Its PSOP8 package and low external component count make the CXLB73124 ideally suited for portable applications. Further more , the CXLB73124 can work within USB and wall adapter. No blocking diode is required due to the internal PMOSFET architecture and have prevent to negative Charge Current Circuit. 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 CXLB73124automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. CXLB73124Other features include current monitor, under voltage lockout, automatic recharge and two status pin to indicate charge termination and the presence of an input voltage.

   产品特点 返回TOP

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 Programmable Charge Current Up to 1000mA 

 No MOSFET, Sense Resistor or Blocking Diode Required 

 Complete Linear Charger in SOP-8 Package for Single Cell Lithium-Ion Batteries 

 Constant-Current/Constant-Voltage 

 Charges Single Cell Li-Ion Batteries Directly from USB Port 

 Preset 4.2V Charge Voltage with 1.5% Accuracy 

 Automatic Recharge 

 Two Charge Status Output Pins 

 C/10 Charge Termination 

 2.9V Trickle Charge Threshold 

 Soft-Start Limits Inrush Current 

 Available Radiator in PSOP8 Package, the Radiator need connect GND or impending

   应用范围 返回TOP

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 Charging Docks and Cradles 

 Cellular Telephones, PDAs, GPS 

 MP3、MP4 Player 

 Digital Still Cameras, Portable Devices 

 USB Bus-Powered Chargers, Chargers

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

 

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Battery Charger（锂电池充电）
Product	status	VccMax	Vbat	IOUT Max	Polarity Detect	OTP、OCP	Pkg
CXLB73120	Active	8V	4.35	1A	NO	Yes	SOT23-5 PSOP8
CXLB73121	Active	8V	4.22	1A	NO	Yes	SOP8 PSOP8（电子烟）
CXLB73122	Active	8V	4.22	800mA	NO(单灯)	Yes	SOT23-5
CXLB73123	Active	8V	4.22	800mA	NO(双灯）	Yes	SOT23-6 PSOP8
CXLB73124	Active	8V	4.22	1A	NO	Yes	PSOP8/DFN2*2-6
CXLB73125	Active	8V	4.22/4.35	2.5A	YES(单灯）	Yes	PSOP8
CXLB73126	Active	8V	4.22/4.35	2.5A	YES(双灯）	Yes	PSOP8