Advanced Analog Technology, Inc.
AAT1205
Function Table
INPUT VOLTAGE STATUS
（V）
EN25
Hi
Low
Hi
Low
Hi
Low
Hi
Low
Hi
Low
Hi
Low
Hi
Low
Hi
Low
VCC50
0
0
0
0
0
0
0
0
5
5
5
5
5
5
5
5
VSB50
0
0
0
0
5
5
5
5
0
0
0
0
5
5
5
5
AUX33
0
0
3.3
3.3
0
0
3.3
3.3
0
0
3.3
3.3
0
0
3.3
3.3
INPUT SELECTED
VCC50/VSB50/AUX33
None
None
AUX33
AUX33
VSB50
VSB50
VSB50
VSB50
VCC50
VCC50
VCC50
VCC50
VCC50
VCC50
VCC50
VCC50
OUTPUT
（V）
OUT33
0
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
OUT25
0
0
2.5
0
2.5
0
2.5
0
2.5
0
2.5
0
2.5
0
2.5
0
OUTPUT
（I）（mA）
Iout33+Iout25
0
0
400
400
400
400
400
400
400
400
400
400
400
400
400
400
Pin Description
TERMINAL
NAME
NO.
VSB50
VCC50
OUT33
AUX33
OUT25
EN25
GND
GND
1
2
3
4
5
6
7
8
I/O
I
I
O
I
O
I
I
I
5V Standby Supply Input
5V Main Supply Input
3.3V Regulated Output
3.3V Auxiliary Supply Input
2.5V Regulated Output
Enable Input of OUT25
Ground
Ground
Description
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