參數(shù)資料
型號(hào): AAT2550
廠商: Advanced Analog Technology,lnc.
英文描述: Total Power Solution for Portable Applications
中文描述: 總功率便攜式應(yīng)用解決方案
文件頁數(shù): 13/35頁
文件大小: 914K
代理商: AAT2550
AAT2550
Total Power Solution for Portable Applications
2550.2006.07.1.0
13
Functional Block Diagram
ENB
LXB
Err.
Amp.
DH
DL
PGND
FBB
Voltage
Reference
Control
Logic
Logic
ENA
LXA
Err.
Amp.
DH
DL
PGND
FBA
Voltage
Reference
Control
Logic
Logic
INB
Charge
Control
Reverse Blocking
CV/Pre-
Charge
Constant
Current
Current
Compare
ADP
BAT
OTP
Charge
Status
STAT2
STAT1
4.2V
ENBAT
ADPSET
TS
INA
Window
Comparator
80μA
Watchdog
Timer
CT
UVLO
Functional Description
The AAT2550 is a highly integrated power manage-
ment IC comprised of a battery charger and two
step-down voltage converters. The battery charger
is designed for charging single-cell lithium-ion /
polymer batteries. Featuring an integrated pass
device and reverse blocking, it offers a constant
current / constant voltage charge algorithm with a
user-programmable charge current level. The two
step-down converters have been designed to mini-
mize external component size and maximize effi-
ciency over the entire load range. Each converter
has independent enable and input voltage pins and
can provide 600mA of load current.
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