Micrel, Inc.

MIC5255

November 2006

3

M9999-110906

Pin Configuration

IN

OUT

BYP

EN

LW xx

1

3

45

2

GND

IN

OUT

BYP

EN

NW xx

1

3

45

2

GND

1

EN

GND

IN

6 BYP

NC

OUT

5

4

2

3

Wxx

MIC5255-x.xBM5

5-Pin SOT23 (M5)

MIC5255-x.xBD5

5-Pin Thin SOT23 (D5)

MIC5255-x.xBML

6-Pin 2x2 MLF

IN

OUT

BYP

EN

KW xx

1

3

45

2

GND

IN

OUT

BYP

EN

NW xx

1

3

45

2

GND

1

EN

GND

IN

6 BYP

NC

OUT

5

4

2

3

Wxx

MIC5255-x.xYM5

5-Pin SOT23 (M5)

MIC5255-x.xYD5

5-Pin Thin SOT23 (D5)

MIC5255-x.xYML

6-Pin 2x2 MLF

Pin Description

Pin Number

SOT23-5

TSOT23-5

Pin Number

6-MLF

Pin Name

Pin Name

1

3

IN

Supply Input.

2

2

GND

Ground.

3

1

EN

Enable/Shutdown (Input): CMOS compatible input. Logic high = enable;

logic low = shutdown. Do not leave open.

4

6

BYP

Reference Bypass: Connect external 0.01µF ≤ CBYP ≤ 1.0µF capacitor

to GND to reduce output noise. May be left open.

5

4

OUT

Regulator Output.

–

5

NC

No internal connection.

–

EP

GND

Ground: Internally connected to the exposed pad. Connect externally to

GND pin.