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。
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产品概述 返回TOP
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
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
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
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
电路原理图 返回TOP
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线性单节锂电充电IC |
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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 |
|
4.2V |
4.5-12V |
200mA |
4.2V |
±1% |
2.9V |
55uA |
SOT23-6 |
|
|
4.2V |
4.5-6.0V |
300mA |
4.2V |
±1% |
2.9V |
350uA |
DFN2*3-8 |
|
|
4.2V |
4.25-6.5V |
200mA |
4.2V |
±1% |
2.9V |
350uA |
DFN2*3-8 |
|
|
4.2V |
4.25-6.5V |
200mA |
4.2V |
±1% |
2.9V |
150uA |
SOT-25 |
|
|
4.2V |
4.25-6.5V |
1.2A |
4.2V |
±1% |
2.9V |
25uA |
ESOP8 |
|
|
4.2V |
4.5-12V |
1A |
4.2V |
±1% |
2.9V |
55uA |
DFN3*3-8 |
|
|
3.6V/4.2V |
4.25-6.5V |
1.2A |
3.6V-4.2V |
±1% |
2.9V |
25uA |
ESOP8 |
|
|
4.2V |
4.5V-8V |
1A |
4.2V |
±1% |
2.9V |
55uA |
DFN3*3-8 |
|
|
4.2V |
4.25-6.5V |
800mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.2V |
4.25-6.5V |
800mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.2V |
4.25-6.5V |
500mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.35V |
4.25-6V |
800mA |
4.35V |
±1% |
2.9V |
25uA |
SOT23-5 |
|
|
4.2V |
4.25-6.5V |
800mA |
4.2V |
±1% |
2.9V |
85uA |
SOT23-5 |
|
|
3.7V |
4-7V |
500mA |
3.7V |
±1% |
2.5V |
250uA |
SOT23-5 |
|
|
2.8V |
4-7V |
500mA |
2.8V |
±1% |
2.0V |
250uA |
SOT23-5 |
|
|
4.35V |
4.25-6.5V |
800mA |
4.35V |
±1% |
2.9V |
85uA |
SOT23-5 |
|
|
4.2V |
4.0-8.0V |
1200mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.0-8.0V |
1200mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.35V |
4.0-8.0V |
1200mA |
4.35V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.25-7.0V |
1000mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.25-7.0V |
1000mA |
4.2V |
±1% |
2.9V |
50uA |
DFN2X2-6L |
|
|
4.2V |
4.25-6.0V |
750mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-6 |
|
|
4.2V |
4.25-6.0V |
800mA |
4.2V |
±1% |
2.9V |
25uA |
SOT23-6 |
|
|
4.35V |
4.5-6.5V |
700mA |
4.35V |
±1% |
2.9V |
80uA |
SOT-26 |
|
|
4.2V |
4.25-6.5V |
500mA |
4.2V |
±1% |
2.9V |
25uA |
SOT-26 |
|
|
4.2V |
4.5-18V |
800mA |
4.2V |
±1% |
2.9V |
70uA |
SOT-26 |
|
|
4.2V |
3.8-6.5V |
1A/0.5A |
4.2V |
±1% |
2.9V |
450uA |
ESOP8/SOP8 |
|
|
4.2V |
4.5-7V |
扩流3A |
4.2V |
±1% |
2.9V |
1mA |
SOP-8 |
|
|
4.2V |
4.5-12V |
700mA |
4.2V |
±1% |
2.9V |
55uA |
SOT23-5 |
|
|
4.2V |
4.5-12V |
700mA |
4.2V |
±1% |
2.9V |
55uA |
SOT23-6 |
|
|
4.2V |
4.25-6.5V |
1000mA |
4.2V |
±1% |
2.9V |
50uA |
ESOP8 |
|
|
4.2V |
4.5-12V |
1000mA |
4.2V |
±1% |
2.9V |
55uA |
ESOP8 |
|
|
4.2V |
4.5-5.5V |
800mA |
4.2V |
±1% |
2.9V |
48uA |
DFN3*3-10 |
|
|
4.2V |
4.5V-18V |
1.3A |
4.2V |
±1% |
2.9V |
48uA |
SOP8 |
|
|
4.2V |
4.5-18V |
1.6A |
4.2V |
±1% |
2.9V |
7uA |
SOP-8 |
|
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