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AAT2556 데이터시트(PDF) 2 Page - Advanced Analog Technology, Inc.

부품명 AAT2556
상세설명  Battery Charger and Step-Down Converter for Portable Applications
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제조업체  AAT [Advanced Analog Technology, Inc.]
홈페이지  http://www.aatech.com.tw
Logo AAT - Advanced Analog Technology, Inc.

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Pin Descriptions
Pin Configuration
TDFN33-12
(Top View)
FB
GND
EN_BUCK
1
EN_BAT
ISET
BAT
VIN
LX
GND
ADP
GND
STAT
2
3
4
5
6
12
11
10
9
8
7
Pin #
Symbol
Function
1
FB
Feedback input. This pin must be connected directly to an external resistor divider.
Nominal voltage is 0.6V.
2, 8, 10
GND
Ground.
3
EN_BUCK
Enable pin for the step-down converter. When connected to logic low, the step-down
converter is disabled and it consumes less than 1µA of current. When connected to
logic high, it resumes normal operation.
4
EN_BAT
Enable pin for the battery charger. When internally pulled down, the battery charger is
disabled and it consumes less than 1µA of current. When connected to logic high, it
resumes normal operation.
5
ISET
Charge current set point. Connect a resistor from this pin to ground. Refer to typical
curves for resistor selection.
6
BAT
Battery charging and sensing.
7
STAT
Charge status input. Open drain status input.
9
ADP
Input for USB/adapter charger.
11
LX
Output of the step-down converter. Connect the inductor to this pin. Internally, it is
connected to the drain of both high- and low-side MOSFETs.
12
VIN
Input voltage for the step-down converter.
EP
Exposed paddle (bottom): connect to ground directly beneath the package.
AAT2556
Battery Charger and Step-Down
Converter for Portable Applications
2
2556.2006.09.1.2


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