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A4053 PDF预览

A4053

更新时间: 2024-10-31 01:15:03
品牌 Logo 应用领域
创瑞 - AITSEMI /
页数 文件大小 规格书
10页 427K
描述
1A LINEAR LI-ION BATTERY CHARGER

A4053 数据手册

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A4053  
BATTERY MANAGEMENT  
AiT Semiconductor Inc.  
www.ait-ic.com  
1A LINEAR LI-ION BATTERY CHARGER  
DESCRIPTION  
FEATURES  
The A4053 is a complete constant current & constant  
voltage linear charger for single cell lithium-ion  
batteries. Its P-MSOP package and low external  
component count make the A4053 ideally suited for  
portable applications. Furthermore, the A4053 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  
A4053 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 A4053 automatically enters a low  
current state, dropping the battery drain current to  
less than 2uA. The A4053 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.  
Programmable Charge Current Up to 1000mA  
No MOSFET, Sense Resistor or Blocking Diode  
Required  
Complete Linear Charger in MSOP Package for  
single Cell Lithium-Ion Batteries  
Constant-Current/Constant-Voltage Operation  
with Thermal Regulation to 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  
Charge Current Monitor Output for Gas Gauging  
Automatic Recharge  
Charge state pairs of output, no battery and fault  
status display  
C/10 Charge Termination  
50uA Supply Current in Shutdown  
2.9V Trickle Charge Threshold  
Soft-Start Limits Inrush Current  
Battery temperature monitoring function  
Available in P-MSOP8 Package  
APPLICATION  
Cellular Telephones, PDAs, MP3 /MP4 Players  
Charging Docks and Cradles  
Bluetooth GPS Applications  
The A4053 is available in P-MSOP8 Package  
TYPICAL APPLICATION  
ORDERING INFORMATION  
Package Type  
P-MSOP8  
Part Number  
A4053MSP8R  
A4053MSP8VR  
MSP8  
R: Tape & Reel  
V: Halogen free package  
Note  
AiT provides all RoHS products,  
suffix “ V “ means Halogen free Package  
REV2.1  
- JUL 2012 RELEASED, SEP 2012 UPDATED -  
- 1 -  

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