Advanced Analog Technology, Inc.

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Page 2 of 16

V 1.

0

AAT1203

Function Table

INPUT VOLTAGE STATUS

(V)

INPUT SELECTED

OUTPUT

（V）

OUTPUT

（I）（mA）

VCC50

VSB50

AUX33

VCC50/VSB50/AUX33

OUT33

Iout33

0

0

0

None

0

0

0

0

3.3

AUX33

3.3

250

0

5

0

VSB50

3.3

250

0

5

3.3

VSB50

3.3

250

5

0

0

VCC50

3.3

250

5

0

3.3

VCC50

3.3

250

5

5

0

VCC50

3.3

250

5

5

3.3

VCC50

3.3

250

Pin Description

TERMINAL

NAME

TERMINAL NO.

I/O

DESCRIPTION

VSB50

1

I

5V Standby Supply Input

VCC50

2

I

5V Main Supply Input

OUT33

3

O

3.3V Regulated Output

AUX33

4

I

3.3V Auxiliary Supply Input

GND

5

I

Ground

GND

6

I

Ground

GND

7

I

Ground

GND

8

I

Ground

Absolute Maximum Ratings

┼

• Main Supply Voltage,

()

50

VCC

V

）

…………….…….………………………………

5

.

0

−

V~7V

• Standby Supply Voltage,

()

50

VSB

V

……………….………………………………..

5

.

0

−

V~7V

• Auxiliary Supply Voltage,

()

33

AUX

V

…………….……………………….………..

5

.

0

−

V~7V

LIMIT

I

………………………………….………………….1.5A

• Continuous Power Dissipation,

d

P （see Note 1）…………….………………….1.1W

• Electrostatic Discharge Susceptibility, Human Body Mode………………….…….2kV

• Operating Ambient Temperature Range,

C

T ……………….……………..……….0℃ to +70℃

• Storage Temperature Range,

storage

T

−

℃

to +125℃

• Operating Junction Temperature Range,

J

• Lead Temperature （Soldering for 10 seconds）,

()

LEAD

T

………………….…...260℃