MIC4682

Micrel

October 2003

2

M0334-102203

Ordering Information

Part Number

Voltage

Junction Temp. Range

Package

MIC4682BM

Adjustable

–40

°C to +125°C

8-lead SOP

Pin Description

Pin Number

Pin Name

Pin Function

1

FB

Feedback (Input): Output voltage sense node. Connect to 1.23V-tap of the

output voltage-divider network.

2, 6, 7

GND

Ground (Return): Ground

3

ISET

Current Limit Set (Input): Connect an external resistor to ground to set the

current limit. Do not ground or float this pin.

4

SHDN

Shutdown (Input): Logic low (<0.8V) enables regulator. Logic high (>2V)

shuts down regulator.

5

IN

Supply Voltage (Input): Unregulated +4V to +34V supply voltage.

8

SW

Switch (Output): Internal power emitter of NPN output switch.

Pin Configuration

1

FB

GND

ISET

SHDN

8SW

GND

GND

IN

7

6

5

2

3

4

Power SOP-8 (M)