Advanced Analog Technology, Inc.
AAT1203
Function Table
INPUT VOLTAGE STATUS
(V)
VCC50
0
0
0
0
5
5
5
5
VSB50
0
0
5
5
0
0
5
5
AUX33
0
3.3
0
3.3
0
3.3
0
3.3
INPUT SELECTED
VCC50/VSB50/AUX33
None
AUX33
VSB50
VSB50
VCC50
VCC50
VCC50
VCC50
OUTPUT
（V）
OUT33
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
OUTPUT
（I）
（mA）
Iout33
0
250
250
250
250
250
250
250
Pin Description
TERMINAL
NAME
VSB50
VCC50
OUT33
AUX33
GND
GND
GND
GND
TERMINAL NO.
1
2
3
4
5
6
7
8
I/O
I
I
O
I
I
I
I
I
5V Standby Supply Input
5V Main Supply Input
3.3V Regulated Output
3.3V Auxiliary Supply Input
Ground
Ground
Ground
Ground
DESCRIPTION
Absolute Maximum Ratings
┼
• Main Supply Voltage,
V
(
VCC50
)
）
…………….…….………………………………
−
0.5
V~7V
• Standby Supply Voltage,
V
(
VSB50
)
……………….………………………………..
−
0.5
V~7V
• Auxiliary Supply Voltage,
V
(
AUX33
)
…………….……………………….………..
−
0.5
V~7V
• Output Current Limit,
I
(
LIMIT
)
………………………………….………………….1.5A
• Continuous Power Dissipation, P
d
（see
Note 1）…………….………………….1.1W
• Electrostatic Discharge Susceptibility, Human Body Mode………………….…….2kV
• Operating Ambient Temperature Range, T
C
……………….……………..……….0℃ to +70℃
• Storage Temperature Range,
T
storage
…………….…………….………………
−
45
℃
to +125℃
• Operating Junction Temperature Range, T
J
…………….………………………..
−
5
℃
to +130℃
• Lead Temperature
（Soldering
for 10 seconds）,
T
(
LEAD
)
………………….…...260℃
–
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.
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