MIC2954

Micrel

MIC2954

2

August 1999

Pin Configuration

1

2

3

4

8

7

6

5

IN

FB

TAP

ERR

OUT

SNS

SHDN

GND

MIC2954

SOP-8 (M)

GND

OUT

IN

32

1

TO-92 (Z)

IN

OUT

GND

13

2

TAB

GND

SOT-223 (S)

3

OUT

2

GND

1IN

TO-220 (T)

Ordering Information

Part Number

Accuracy

Junc. Temp. Range

Package

MIC2954-02BT

0.5%

–40

°C to +125°C

TO-220

MIC2954-03BT

1.0%

–40

°C to +125°C

TO-220

MIC2954-02BS

0.5%

–40

°C to +125°C

SOT-223

MIC2954-03BS

1.0%

–40

°C to +125°C

SOT-223

MIC2954-02BZ

0.5%

–40

°C to +125°C

TO-92

MIC2954-03BZ

1.0%

–40

°C to +125°C

TO-92

MIC2954-07BM

0.5%

–40

°C to +125°C

SOP-8

MIC2954-08BM

1.0%

–40

°C to +125°C

SOP-8

Pin Description

Pin No.

Pin No.

Pin No.

Pin No.

Pin Name

Pin Function

SOT-223

SOP-8

TO-220

TO-92

1

8

1

1

IN

Supply Input

4

2

2

GND

Ground

3

1

3

3

OUT

Regulator Output

2

SNS

Sense (Input): Output-sense-voltage end of internal resistive

divider. Connect to OUT (V

also see TAP. Not used in adjustable configuration.

3

SHDN

Shutdown (Input): Active-low input enables regulator.

(Low = enable; high = shutdown.)

5

ERR

Error Flag (Output): Open collector (active-low) output. Active

state indicates an output (V

(Low = error, floating = normal.)

6

TAP

Divider Tap (Output): Resistive voltage divider tap. With 5V

applied to SNS, V

FB for 5V operation. Not used in adjustable configuration.

7

FB

Feedback (Input): Error amplifier input. Compared to internal

1.23V reference. Connect to external voltage divider for

adjustable operation or internal voltage divider (TAP) for 5V

operation (see SNS, TAP).