Advanced Analog Technology, Inc.

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Page 2 of 18

V5.0

AAT1102 (BIN2)

PIN DESCRIPTIONS

PIN

NAME

FUNCTION

1

EO

Compensation Pin for Error Amplifier

2

IN

Feedback Pin with a Typical Reference Voltage of 1.24V,

OUT

V

= IN(1+

R2

R1

)

3

SHDN

Shutdown Control Pin. The Device Will Turn Off When SHDN is Low

4

GND

Ground

5

SW

Switch Pin

6

DD

V

Power Supply Pin

7

FREQ

Frequency Select Pin. Switch Oscillator Frequency to 640kHz When FREQ is

Low, and 1.3MHz When FREQ is High

8

SS

Soft-Start Control Pin. No Soft-Start When the Pin is Left Open

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

VALUE

UNIT

SW to GND

3

.

0

−

to +18

V

IN, SHDN,

DD

V

, FREQ to

GND

3

.

0

−

to +6

V

SS, EO to GND

3

.

0

−

V to (

DD

V

+ 0.3V)

V

RMS SW Pin Current

SW

I

1.2

A

Continuous Power Dissipation

(

C

+

℃

)

8-Pin MSOP (De-Rate

mW

1

.

4

/℃ above +70 )

℃

d

P

330

mW

Operation Temperature Range

C

T

30

−

to +85

℃

Storage Temperature Range

storage

T

45

−

to +125

℃

Junction Temperature Range

J

T

+150

℃

Lead Temperature

(Soldering for 10 seconds)

L

T

+300

℃

Note:

1. Absolute Maximum Ratings are threshold limit values that must not be exceeded.

2. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device.

3. These are stress ratings only and do not necessarily imply functional operation below these limits.