MP2112 データシートの表示（PDF） - Monolithic Power Systems

部品番号

コンポーネント説明

メーカー

MP2112

1MHz, 1A Synchronous Step-Down Converter

Monolithic Power Systems 

TM

The Future of Analog IC Technology TM

DESCRIPTION

The MP2112 is a 1MHz constant frequency,

current mode, PWM step-down converter. The

device integrates a main switch and a

synchronous rectifier for high efficiency without

an external Schottky diode. It is ideal for

powering portable equipment that powered by a

single cell Lithium-Ion (Li+) battery. The

MP2112 can supply 1A of load current from a

2.5V to 6V input voltage. The output voltage

can be regulated as low as 0.6V. The MP2112

can also run at 100% duty cycle for low dropout

applications.

The MP2112 is available in a space-saving

6-pin QFN package.

MP2112

1MHz, 1A Synchronous

Step-Down Converter

FEATURES

• High Efficiency: Up to 95%

• 1MHz Constant Switching Frequency

• 1A Available Load Current

• 2.5V to 6V Input Voltage Range

• Output Voltage as Low as 0.6V

• 100% Duty Cycle in Dropout

• Current Mode Control

• Short Circuit Protection

• Thermal Fault Protection

• <0.1µA Shutdown Current

• Space Saving 3mm x 3mm QFN6 Package

APPLICATIONS

• Cellular and Smart Phones

• Microprocessors and DSP Core Supplies

• PDAs

• MP3 Players

• Digital Still and Video Cameras

• Portable Instruments

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

Power Systems, Inc.

TYPICAL APPLICATION

VIN

2.5V to 6V

5 VINA

6

EN

MP2112

4 VINB

3

SW

2

GND

FB 1

EN

VOUT

1.8V/1A

MP2112_TAC_S01

Efficiency vs

Load Current

100

90 VIN = 3.3V

80

70

VIN = 4.2V

60

50

40

30

20

10

0

10

100

1000

LOAD CURRENT (mA)

MP2112-EC01

MP2112 Rev. 1.2

www.MonolithicPower.com

1

3/6/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

Share Link: