April 2005

3

M9999-042105

MIC2219

Micrel, Inc.

Pin Description

Pin Number

Pin Name

Pin Function

1

VIN

Supply Input: (VIN1 and VIN2 are internally tied together.)

2

EN1

Enable Input to Regulator 1: Enables regulator 1 output. Active high input.

High = on, low = off. Do not leave floating.

3

EN2

Enable Input to Regulator 2: Enables regulator 2 output. Active high input.

High = on, low = off. Do not leave floating.

4

CBYP

Reference Bypass: Connect external 0.01µF to GND to reduce output noise.

May be left open.

5

FB1

Feedback Node (OUT1). Connected to internal feedback resistor divider

network.

6

GND

Ground: Connect externally to Exposed Pad.

7

FB2

Feedback Node (OUT2). Connected to internal feedback resistor divider

network.

8

N/C

No Connection.

9

VOUT2

Output of Regulator 2: 300mA output current.

10

VOUT1

Output of Regulator 1: 150mA output current.

EP

GND

Ground: Internally connected to the Exposed Pad. Connect externally to pin 6.