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MIC2810-1.2/1.2/2.8YML

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

Micrel 

MIC2810

Digital Power Management IC

2MHz, 600mA DC/DC w/Dual

300mA/300mA Low VIN LDOs

General Description

The MIC2810 is a high performance power management

IC, integrating a 2MHz DC/DC switcher with two 300mA

LDOs. The MIC2810 features a LOWQ® mode, reducing

the total current draw while in this mode to less than 30µA.

In LOWQ® mode, the output noise of the DC/DC converter

is 53µVRMS, significantly lower than other converters that

use a PFM light load mode that can interfere with sensitive

RF circuitry.

The MIC2810 is a µCap design, operating with very small

ceramic output capacitors and inductors for stability,

therefore, reducing required board space and component

cost. It is available with fixed output voltages in a 16-pin

3mm x 3mm MLF® leadless package.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Features

• 2MHz DC/DC converter and two LDOs

• Integrated power-on reset (OR function for all outputs)

– Adjustable delay time

• LOWQ® mode

– 30µA Total IQ when in LOWQ® mode

• Tiny 16-pin 3mm x 3mm MLF® package

• Thermal shutdown protection

• Current limit protection

DC/DC Converter

• 2.7V to 5.5V input voltage range

• Output current to 600mA in PWM mode

• LOWQ® Mode: NO NOISE light load mode

– 53µVRMS Output noise in LOWQ® mode

• 2MHz PWM operation in normal mode

LDOs

• LDO1

– 1.65V to 5.5V input voltage range

– 300mA Output current

– Output voltage down to 0.8V

• LDO2

– 2.7V to 5.5V input voltage range

– 300mA Output current

– Output voltage down to 0.8V

Applications

• Mobile phones

• PDAs

• GPS receivers

• Digital still cameras

• Portable media players

Typical Application

VIN

2.7V to 5.5V

4.7µF

MIC2810-xxxYML

VIN

VIN1

VIN2

EN

EN1

LOWQ

EN2

BIAS

PGND

0.1µF

LDO

SW

2.2µH

LDO1

LDO2

POR

CSET

SGND

2.2µF

ceramic

0.01µF

VOUT

2.2µF

2.2µF

ceramic

Memory/DSP

Baseband

GND

GND

1.2VOUT Efficiency

90

80

70

VIN=3V

60

VIN=3.6V

VIN=4.2V

50

40

30

20

100 100 200 300 400 500 600

OUTPUT CURRENT (mA)

LOWQ is a registered trademark of Micrel, Inc.

MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

April 2007

1

M9999-041107-B

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