Micrel, Inc.

MIC2810

February 2008

3

M9999-022008-C

Pin Configuration

16-Pin 3mm x 3mm MLF

Pin Description

Pin Number

Pin Name

Pin Function

1

/LOWQ

LOWQ Mode. Active Low Input. Logic High = Full Power (Normal) Mode;

Logic Low = LOWQ Mode; Do not leave floating.

2

BIAS

Internal circuit bias supply. It must be de-coupled to signal ground with a 0.1µF

capacitor and should not be loaded.

3

SGND

Signal ground.

4

PGND

Power ground.

5

SW

Switch: Internal power MOSFET output switches.

6

VIN

Supply Input – DC/DC and other circuitry shared with LDO1 and LDO2. Must be

connected to PIN 7.

7

VIN2

Supply Input – LDO2. Must be connected to PIN 6.

8

LDO2

Output of LDO2

9

LDO

10

VIN1

Supply Input – LDO1.

11

LDO1

Output of LDO1

12

POR

Power-On Reset Output: Open-drain output. Active low indicates an output

undervoltage condition on either one of the three regulated outputs.

13

CSET

Delay Set Input: Connect external capacitor to GND to set the internal delay for the

POR output. When left open, there is minimum delay. This pin cannot be grounded.

14

EN1

Enable Input (LDO 1). Active High Input. Logic High = On; Logic Low = Off; Do not

leave floating

15

EN

Enable Input (DC/DC). Active High Input. Logic High = On; Logic Low = Off; Do not

leave floating.

16

EN2

Enable Input (LDO 2). Active High Input. Logic High = On; Logic Low = Off; Do not

leave floating