CXLB7385恒流恒压线性充电器单电池锂离子电池内部MOSFET结构充电电压固定在4.2V充电电流电阻在外部编程当充电电流达到最终浮充电压后降至编程值的1/10

CXLB7385是一款完整的恒流/恒压线性充电器，用于单电池锂离子电池。它的封装和较低的外部组件数量使CXLB7385非常适合便携式应用。此外，CXLB7385是专门设计用于USB电源规格的。不需要外部感测电阻器，也不需要阻塞二极管，因为内部MOSFET结构。充电电压固定在4.2V，充电电流可以用一个电阻在外部编程。当充电电流达到最终浮充电压后，降至编程值的1/10。

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 CXLB7385 is a complete constant current/constant voltage linear charger for
single cell lithium-ion batteries. Its package and low external component count make the CXLB7385 ideally suited for portable applications.Furthermore, the CXLB7385 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 CXLB7385 automatically terminates thecharge cycle when the charge current
drops to 1/10th the programmed value after the final float voltage is reached.
   The CXLB7385 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
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 …………...................................................................................... –0.3V ～ 7V
CHRG1, CHRG2 Pin Voltage.......................................................................... – 0.3V ～ VIN + 0.3V
VOUT Pin Voltage......................................................................................................... –0.3V ～ 7V
VOUT Pin Current .................................................................................................................. 800mA
ISET Pin Voltage........................................................................................................... –0.3V ～ 7V
Operating Ambient Temperature Range (Note 2).................................................... –40℃ ～ +85℃
Maximum Junction Temperature............................................................................................. +150℃
Storage Temperature Range ………………….………………………….................. –65℃ ～ +125℃
Lead Temperature (Soldering, 10 sec)................................................................................... +265℃
八,相关芯片选择指南              更多同类产品......

单节锂电池充电管理IC
Model	VIN (V)	VOUT (V)	IOUT	Package	ISLEEP
CXLB7257	4.7V ～ 6V	4.22V	1A	SOP-8L	20
CXLB7257B	4.7V ～ 6V	4.22V	1.5A	SOP-8L	20
CXLB7257C	4.7V ～ 6V	4.22V	1.8A	SOP-8L	20
CXLB7201	4.7V ～ 6V	4.22V	700mA	SOT-23	20
CXLB7201B	4.7V ～ 6V	4.22V	1000mA	SOT-23	20
CXLB7201F	4.7V ～ 6V	4.2V	1A	SOT-23	20
CXLB7202C	4.7V ～ 6V	4.22V	1000mA	SOT-23	20
CXLB7202	4.7V ～ 6V	4.22V	900mA	SOP8	20
CXLB7203G	4.7V ～ 6V	4.22V	900mA	SOP8	20
CXLB7385	4.5~5.5	4.2V	800mA	DFN3*3-10L	20