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ACT2823

更新时间： 2024-11-18 01:02:19
品牌 Logo 应用领域
技领 - ACTIVE-SEMI 电池
页数 文件大小 规格书
25页 1496K
描述
Dual Cell Li-Ion Battery Charger and Power Bank Manager

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中文翻译

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ACT2823 数据手册

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ACT2823  
REV 1, 01-DEC-2016  
Dual Cell Li-Ion Battery Charger and Power Bank Manager  
BENEFITS and FEATURES  
APPLICATIONS  
Simple Design  
Backup Battery Pack  
Power Bank  
o
Single chip charger and power bank con-  
trol  
Dual Cell Boost Battery Charger  
Bluetooth Speaker  
o
o
o
Power path and battery charge control  
Charge/Discharge/Power path control  
Automatic output plug-in detection wakeup  
and no load detection sleep mode  
Wearables  
POS Machine  
USB Compatible  
Standalone Battery Charger with USB Output  
o
o
o
Vin = 4.5V to 5.5V  
Vout = 5.07V +/- 1%  
Auto Detection support USB BC1.2, Chi-  
nese YD/T 1591-2009, Apple, and Samsung  
Pass MFi Test  
Automatically accommodates weak input  
power sources.  
GENERAL DESCRIPTION  
The ACT2823 is a space-saving, dedicated single-chip  
solution for dual-cell battery charge and discharge  
control. It is optimized for power bank and battery  
backup systems. The ACT2823 operates in three  
modes: charge mode, discharge mode and HZ mode.  
o
o
High Power Capability  
It charges dual Li-Ion batteries from a USB input while  
also delivering power to the load. Automatic power path  
control always gives priority to the load.  
o
o
o
3.3A Load Current  
1.5A Charge Current  
Dual Li-Ion Cells – 8.4V/8.7V +/-0.5%  
When the USB input is not present, the ACT2823  
powers the load at 5.07V from the batteries. The cycle-  
by-cycle peak current mode control, constant current  
regulation, short circuit protection and over voltage  
protection maximize safe operation.  
Built in Safety  
o
o
o
o
Over/Under-voltage Protection  
Low Power Short Circuit Protection  
Battery Over charge/discharge protection  
Charge/Discharge Thermal Regulation  
ACT2823’s HZ mode minimizes the batteries current  
drain to less than 10µA to help maintain fully charged  
batteries for products with long storage, shipping, and  
shelf life.  
Space Savings  
o
o
o
Single Chip Design - fully integrated FETs  
Integrated LED status reporting  
TQFN5x5-40 Package  
ACT2823 provides 4 LED drive pins for battery capacity  
level and charge status indication to indicate 25%, 50%,  
75% and 100% battery charge levels. Multiple LED  
indications patterns are programmable.  
Power Savings  
o
o
o
>92% Efficient  
400kHz  
<10uA Battery drain current  
ACT2823 is available in  
a thermally enhanced  
Easy system level design  
5mmx5mm QFN55-40 package with exposed pad.  
o
o
I2C programmability 1MHz  
Configurable operating modes and fault  
conditions  
1uF  
o
Meets EN55022 Class B Radiated EMI  
Standard  
22uF  
LED4 LED3 LED2 LED1 VREG  
22uF  
VIN  
VIN  
BAT  
22uF  
BATS  
25mΩ  
CSN  
CSP  
BATP  
ACT2823  
20mΩ  
VOUT  
VOUT  
SW  
5.07V/3.3A  
4.7uH  
47nF  
PGND  
BATN  
HSB  
22uF  
22uF  
RIMC ICST TH  
PB AGND  
8k  
10k  
540 k  
Innovative PowerTM  
ActiveSwitcherTM is a trademark of Active-Semi.  
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