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SS8051

Rev.2.01 6/06/2003

ORDERING INFORMATION

SOT23-5

TOP VIEW

Packing type

TR: Tape and reel

TB: Tube

Pinout type

T11

T12

SS8051TXXXX

Example: SS8051T12TR

T12 pin configuration shipped in

tape and reel packing

VCC

SHDN

5

4

1

SW

2

3

GND

FB

VCC

SHDN

5

4

1

SW

2

3

GND

FB

SS8051T11

5

4

1

2

3

SS8051T12

5

4

1

2

3

ABSOLUTE MAXIMUM RATINGS

SW to GND…………………………………………………................……..-0.3V to +30V

Operating Temperature Range............................................................. -40

°C to 85°C

Maximum Operating Junction Temperature.................................................... +125

°C

Storage Temperature Range .............................................................. -65

°C to 150°C

Maximum Lead Temperature (Soldering, 10sec)............................................ +300

°C

PIN CONFIGURATION

NAME

FUNCTION

SW

Switch Pin. The drain of the internal NMOS power switch. Connect this pin to inductor.

GND

Ground.

FB

Feedback Pin. Set the output voltage by selecting values for R1 and R2 (see Block Diagram):

R1 = R2

2

.

1

-1

SHDN

Active-Low Shutdown Pin. Tie this pin to logic-high to enable the device or tie it to logic-low to turn the

device off.

VCC

Input Supply Pin. Bypass this pin with a capacitor as close to the device as possible.

PIN DESCRIPTION