Micrel, Inc.

MIC2807

February 2008

3

M9999-022008-B

Pin Description

Pin Number

Pin Name

Pin Function

1

DAC

DAC Control Input (Analog Voltage Input). Provides control of output voltage of DC/DC converter.

2

BYP

Filter capacitor for LDO1 and LDO2 internal voltage reference, connect capacitor to ground.

3

AGND

Signal ground of chip.

4

EN2

Enables the LDO2 regulator.

5

VIN

LDO1 and LDO2 Supply Voltage. Must be connected to PIN 15.

6

LDO1

Output of the LDO1.

7

LDO2

Output of the LDO2.

8, 9

OUT

Drain of internal bypass switch, also serves as feedback for the internal regulator.

10

PGND

Power ground.

11

SW

Switch: Internal power MOSFET output switches of DC/DC converter.

12

PVIN

Supply Voltage: Requires bypass capacitor to ground.

13

EN1

Enables LDO1 Regulator.

14

EN

Enables the DC/DC Converter.

15

AVIN

Supply voltage for DC/DC converter control circuitry and reference voltage circuit. Must be connected

to PIN 5.

16, 17

NC

No Connect.