电池反向连接保护可编程充电电流1A最终浮充电压后充电电流降至编程值的1/10时自动终止充电循环CXLB7398单电池锂离子电池的完整恒流恒压线性充电器

CXLB7398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。底部有一个热增强的8针SOP包，外部组件数量少，因此CXLB7398非常适合便携式应用。此外，CXLB7398是专门设计的工作在USB电源规格。不需要外部感应电阻，也不需要阻塞二极管，因为内部PMOSFET架构。热反馈调节充电电流，以限制在高功率运行或高环境温度下的模具温度。充电电压固定在4.2V/4.34V，充电电流可以用一个电阻在外部编程。当达到最终浮充电压后，充电电流降至编程值的1/10时，CXLB7398自动终止充电循环。当输入电源（墙壁适配器或USB电源）卸下时，CXLB7398自动进入低电流状态，将电池放电电流降至小于2μa进入关机模式，将电源电流降低至55μA。其他功能包括电池温度监测器、欠压锁定、自动充电和两个状态引脚，以指示充电和充电终止。

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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     CXLB7398 is a complete constant-current/constant voltage linear charger for single cell lithium-ion batteries. With a thermally enhanced 8-PIN SOP package on the bottom and low external component count make the CXLB7398 ideally suited for portable applications. Furthermore the CXLB7398  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 PMOSFET 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 / 4.34V, and the charge current can be programmed externally with a single resistor.  The CXLB7398 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 CXLB7398 automatically enters a low current state dropping the battery drain current to less than 2μA.The    CXLB7398 can be put into shutdown mode reducing the supply current to 55μA.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

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●Protection of battery cell reverse connection 

● Programmable charge current up to 1A  

●No MOSFET sense resistor or blocking diode required 

●Complete linear Charger in SOP8 Package for single Cell Lithium-Ion Batteries. 

●Constant-Current/Constant-Voltage  operation with thermal regulation to maximize Rate Without risk of overheating. 

● Preset 4.2V / 4.34V charge voltage with ±1% accuracy 

● Automatic Recharge 

● Two Status Indication for Charge status, no battery and battery failure indicators 

● C/10 charge termination 

● 55μA supply current in shutdown 

● 2.9V trickle current charge threshold 

● Soft-Start limits inrush current 

● Battery Temperature Sensing 

   应用范围 返回TOP

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●Cellular Telephones 

●Digital Still Cameras 

●MP3 Players 

●Bluetooth Applications 

●Portable Devices 

●USB Bus-Powered Chargers

   技术规格书（产品PDF) 返回TOP 

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     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！

 

产品封装图 返回TOP

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电路原理图 返回TOP

 

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相关芯片选择指南 返回TOP           更多同类产品。。。。。。

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锂电充电IC
型号	输入电压	输出电压	最大充电流	待机电流	封装
CXLB7398	5V	4.2V/4.34V	1A	55μA	SOP-8
CXLB7399	9~10V	8.4	1000mA	55μA	DIP-8
CXLB73100	9V	4.2V	600mA	145uA	SOT23-5
CXLB73101	10V	5V	1.2A	55μA	SOP-8
CXLB73102	5V	4.2V	600mA	25uA	SOT-23-5
CXLB73103	4.75~7V	4.2 v	500MA	55μA	SOT-23-6L
CXLB73104	4.25~6	4.2 v	800MA	20uA	SOT-23 and PSOP-8
CXLB73105	9V	4.2 v	600mA	145uA	SOT-23-6L
CXLB73106	4.25~6.5	4.2V	800mA	25uA	SOT-23-5
CXLB73107	4.0~9.0	4.2V	500mA	40uA	SOT-23-6L
CXLB73108	9V	4.2V	500mA	40uA	TSOT-23
CXLB73109	4.2V~6.5V	4.2V	800mA	45uA	SOT23-5
CXLB73110	9-10V	8.4	1A	25uA	SOP-8L
CXLB73111	5.5	4.2V	600mA	25uA	SOT-23
CXLB73112	4.0~8.0	4.2V	1A	55uA	SOP-8
CXLB73113	4.5~6.5V	4.2V	800mA	25μA	SOT-23-5
CXLB73114	3.6V	12V	800mA	25μA	SOT-23-6
CXLB73115	8V-36V		4.8A	25μA	SOP-8
CXLB73116	5V~16V	1.2V~16V	2A	25μA	SOP-8
CXLB73117	4.7v-6v	4.2V	2A	4μA	SOP-8
CXLB73118	2.3V~5.5V		1.5A	1μA	SOT23-5