MIC2810-1.2/1.2/2.8YML Ver la hoja de datos (PDF) - Micrel

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Fabricante

MIC2810-1.2/1.2/2.8YML

Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs

Micrel 

Micrel, Inc.

Pin Configuration

MIC2810

16-Pin 3mm x 3mm MLF® (ML)

Pin Description

Pin Number Pin Name

1

/LOWQ

2

BIAS

3

SGND

4

PGND

5

SW

6

VIN

7

VIN2

8

LDO2

9

LDO

10

VIN1

11

LDO1

12

POR

13

CSET

14

EN1

15

EN

16

EN2

Pin Function

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

Logic Low = LOWQ Mode; Do not leave floating.

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

capacitor and should not be loaded.

Signal ground.

Power ground.

Switch: Internal power MOSFET output switches.

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

connected to PIN 7.

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

Output of LDO2

LDO Output: Connect to VOUT of the DC/DC for LOWQ mode operation.

Supply Input – LDO1.

Output of LDO1

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

undervoltage condition on either one of the three regulated outputs.

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.

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

leave floating

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

leave floating.

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

leave floating

April 2007

3

M9999-041107-B

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