CXLB7254恒定电流常数单电池锂离子电池可编程1A线性充电器欠压闭锁自动充电和两种状态指示充电和充电终止的引脚

CXLB7254是一个完全恒定的电流和常数单电池锂离子电池用电压线性充电器。其标准操作程序包和低外部组件计数使CXLB7254非常适合便携式应用。此外，CXLB7254专门设计用于
在USB电源规格范围内工作。不需要外部感应电阻，也不需要阻塞由于内部MOSFET，需要二极管建筑。热反馈调节电荷高功率时限制模具温度的电流工作或环境温度高。指控电压固定在4.2V，充电电流可以外部用一个电阻编程。这个当充电电流降到编程值的1/10达到最终浮充电压后。当输入电源（墙壁适配器或USB电源）为拆下后，CXLB7254自动进入低电流状态，将电池放电电流降至小于2uA。CXLB7254可以进入停机模式，从而减少50uA的供电电流。其他功能包括电池温度监视器，欠压闭锁、自动充电和两种状态指示充电和充电终止的引脚。

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    CXLB7254 is a complete constant current & constant

voltage linear charger for single cell lithium-ion batteries.

Its SOP package and low external component count

make the    CXLB7254 ideally suited for portable applications.

Furthermore, the    CXLB7254 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

CXLB7254 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    CXLB7254 automatically enters a low current

state, dropping the battery drain current to less than 2uA.

The    CXLB7254 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

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l Programmable Charge Current Up to 1000mA

 

l No MOSFET, Sense Resistor or Blocking Diode

Required

l Complete Linear Charger in SOP Package for single

Cell Lithium-Ion Batteries

l Constant-Current/Constant-Voltage Operation with

Thermal Regulation to Maximize Charge Rate

Without Risk of Overheating

l Charges Single Cell Li-Ion Batteries Directly from

USB Port

l Preset 4.2V Charge Voltage with ±1% Accuracy

l Charge Current Monitor Output for Gas Gauging

l Automatic Recharge

l Charge state pairs of output, no battery and fault

status display

l C/10 Charge Termination

l 50uA Supply Current in Shutdown

l 2.9V Trickle Charge Threshold

l Soft-Start Limits Inrush Current

l Battery temperature monitoring function

l Available in SOP8-PP Package

   应用范围 返回TOP

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l Cellular Telephones, PDAs, MP3 /MP4 Players

l Charging Docks and Cradles

l Bluetooth 、GPS Applications

   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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线性单节锂电充电IC
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
CXLB7244	4.2V	4.5-12V	200mA	4.2V	±1%	2.9V	55uA	SOT23-6
CXLB7245DR	4.2V	4.5-6.0V	300mA	4.2V	±1%	2.9V	350uA	DFN2*3-8
CXLB7246DR	4.2V	4.25-6.5V	200mA	4.2V	±1%	2.9V	350uA	DFN2*3-8
CXLB7246MR	4.2V	4.25-6.5V	200mA	4.2V	±1%	2.9V	150uA	SOT-25
CXLB7247	4.2V	4.25-6.5V	1.2A	4.2V	±1%	2.9V	25uA	ESOP8
CXLB7247ADR	4.2V	4.5-12V	1A	4.2V	±1%	2.9V	55uA	DFN3*3-8
CXLB7247B	3.6V/4.2V	4.25-6.5V	1.2A	3.6V-4.2V	±1%	2.9V	25uA	ESOP8
CXLB7247DR	4.2V	4.5V-8V	1A	4.2V	±1%	2.9V	55uA	DFN3*3-8
CXLB7248	4.2V	4.25-6.5V	800mA	4.2V	±1%	2.9V	25uA	SOT23-5
CXLB7248B	4.2V	4.25-6.5V	800mA	4.2V	±1%	2.9V	25uA	SOT23-5
CXLB7248C	4.2V	4.25-6.5V	500mA	4.2V	±1%	2.9V	25uA	SOT23-5
CXLB7248D	4.35V	4.25-6V	800mA	4.35V	±1%	2.9V	25uA	SOT23-5
CXLB7249	4.2V	4.25-6.5V	800mA	4.2V	±1%	2.9V	85uA	SOT23-5
CXLB7249B	3.7V	4-7V	500mA	3.7V	±1%	2.5V	250uA	SOT23-5
CXLB7249C	2.8V	4-7V	500mA	2.8V	±1%	2.0V	250uA	SOT23-5
CXLB7249D	4.35V	4.25-6.5V	800mA	4.35V	±1%	2.9V	85uA	SOT23-5
CXLB7250	4.2V	4.0-8.0V	1200mA	4.2V	±1%	2.9V	55uA	ESOP8
CXLB7250A	4.2V	4.0-8.0V	1200mA	4.2V	±1%	2.9V	55uA	ESOP8
CXLB7250B	4.35V	4.0-8.0V	1200mA	4.35V	±1%	2.9V	55uA	ESOP8
CXLB7250C	4.2V	4.25-7.0V	1000mA	4.2V	±1%	2.9V	55uA	ESOP8
CXLB7250DR	4.2V	4.25-7.0V	1000mA	4.2V	±1%	2.9V	50uA	DFN2X2-6L
CXLB7251	4.2V	4.25-6.0V	750mA	4.2V	±1%	2.9V	25uA	SOT23-6
CXLB7251A	4.2V	4.25-6.0V	800mA	4.2V	±1%	2.9V	25uA	SOT23-6
CXLB7251B	4.35V	4.5-6.5V	700mA	4.35V	±1%	2.9V	80uA	SOT-26
CXLB7251C	4.2V	4.25-6.5V	500mA	4.2V	±1%	2.9V	25uA	SOT-26
CXLB7251D	4.2V	4.5-18V	800mA	4.2V	±1%	2.9V	70uA	SOT-26
CXLB7252	4.2V	3.8-6.5V	1A/0.5A	4.2V	±1%	2.9V	450uA	ESOP8/SOP8
CXLB7253	4.2V	4.5-7V	扩流3A	4.2V	±1%	2.9V	1mA	SOP-8
CXLB7366	4.2V	4.5-12V	700mA	4.2V	±1%	2.9V	55uA	SOT23-5
CXLB7367	4.2V	4.5-12V	700mA	4.2V	±1%	2.9V	55uA	SOT23-6
CXLB7254	4.2V	4.25-6.5V	1000mA	4.2V	±1%	2.9V	50uA	ESOP8
CXLB7368	4.2V	4.5-12V	1000mA	4.2V	±1%	2.9V	55uA	ESOP8
CXLB7255	4.2V	4.5-5.5V	800mA	4.2V	±1%	2.9V	48uA	DFN3*3-10
CXLB7256	4.2V	4.5V-18V	1.3A	4.2V	±1%	2.9V	48uA	SOP8
CXLB7256A	4.2V	4.5-18V	1.6A	4.2V	±1%	2.9V	7uA	SOP-8