MIC2145

Micrel

MIC2145

2

May 2003

Pin Description

Pin Number

Pin Number

Pin Name

Pin Function

MSOP

MLF

1

1

EN

Enable (Input): Logic high (

≥1.5V) enables regulator. Logic low (≤0.7V)

shuts down regulator. Do not float.

2

2

SS

Soft Start Capacitor (External Component): Connect external capacitor to

ground to control the rise time of the output voltage.

3

3

RSET

Current Limit (External Component): Sets peak current limit of the internal

power MOSFET using an external resistor.

4

4, 5

PGND

Power Ground (Return): Internal power MOSFET source.

5

6, 7

SW

Switch Node (Input): Internal power MOSFET drain.

6

8

VDD

Supply (Input): +2.4V to +16V for internal circuitry.

7

9

FB

Feedback (Input): Output voltage sense node.

8

10

SGND

Small Signal Ground (Return): Ground

Pin Configuration

1

EN

SS

RSET

PGND

8

SGND

FB

VDD

SW

7

6

5

2

3

4

8-Lead MSOP (MM)

EN

SS

RSET

PGND

SGND

FB

VDD

SW

1

2

3

4

10

9

8

7

56

PGND

SW

3mm

×××××3mm MLF-10L (ML)