Micrel, Inc.

MIC5159

June 2006

2

M9999-062706

Ordering Information

Part Number

Standard

Pb-Free

Marking

Voltage*

Junction

Temp. Range

Package

MIC5159BM6

MIC5159YM6

LZAA

Adj.

–40° to +125°C

SOT-23-6

MIC5159-1.8BM6

MIC5159-1.8YM6

LZ18

1.8V.

–40° to +125°C

SOT-23-6

MIC5159-3.0BM6

MIC5159-3.0YM6

LZ30

3.0V

–40° to +125°C

SOT-23-6

Note:

Other Voltage available. Contact Micrel for details.

Pin Configuration

IN GND

GATE

IS

13

4

6

ADJ

LZAA

5

EN

2

Pin 1

Index

IN GND

GATE

IS

13

4

6

OUT

LZxx

5

EN

2

Pin 1

Index

SOT-23-6 (M6)

Adjustable Voltage Version

SOT-23-6 (M6)

Fixed Voltage Version

Pin Description

Pin Number

Pin Name

Pin Function

1

IN

Input Voltage.

2

GND

Ground.

3

IS

Current Sense: IS must be tied to VIN pin if the current limit feature is not used.

4

GATE

Gate drive of the external P-Channel MOSFET.

5

EN

Enable Input: Logic Level ON/OFF control. Logic high = ON; logic low = OFF.

ADJ

Adjustable Regulator Feedback Input: Connect to resistor voltage divider.

6

OUT

Output Voltage: Connect to drain of P-Channel MOSFET to regulate output to

proper voltage.