MP2012

Low Voltage, 2.7-6V Input,1.5A, 1.2MHz

Synchronous Step-Down Converter

MP2012 Rev. 1.01

www.MonolithicPower.com

1

9/22/2011

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2012 is a fully integrated, internally

compensated 1.2MHz fixed frequency PWM

step-down converter. It is ideal for powering

portable equipment that runs from a single cell

Lithium-Ion (Li+) Battery, with an input range

from 2.7V to 6V. The MP2012 can provide up to

1.5A of load current with output voltage as low

as 0.8V. It can also operate at 100% duty cycle

for low dropout applications. With peak current

mode control and internal compensation, the

MP2012 is stable with ceramic capacitors and

small inductors. Fault condition protection

includes cycle-by-cycle current limiting and

thermal shutdown.

MP2012 is available in a small QFN6 (3x3mm)

package.

FEATURES

• 2.7-6V Input Operation Range

• Output Adjustable from 0.8V to VIN

• 1μA Max Shutdown Current.

• Up to 95% Efficiency

• 100% Duty Cycle for Low Dropout

Applications

• 1.2MHz Fixed Switching Frequency

• Stable with Low ESR Output Ceramic

Capacitors

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Short Circuit Protection

• Available in QFN6 (3x3mm)

APPLICATIONS

• DVD+/-RW Drives

• Smart Phones

• PDAs

• Digital Cameras

• Portable Instruments

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“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

MP2012

PVIN

VIN

GND

EN

SW

FB 1

2

3

6

4

5

C1

2.7V to 6V

EN

L1

R1

R2

Rt

C2

1.8V/1.5A

Efficiency vs.

Load Current

LOAD CURRENT(A)

0

10

20

30

40

50

60

70

80

90

100

0

0.3

0.6

0.9

1.2

1.5

Vin=5V

Vin=3V