MP2562

1A, 4MHz, 50V

Step-Down Converter

MP2562 Rev. 0.91

www.MonolithicPower.com

1

4/5/2010

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2010 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2562 is a high frequency step-down

switching regulator with an integrated internal

high-side high voltage power MOSFET. It

provides 1A output with current mode control for

fast loop response and easy compensation.

The wide 4.5V to 50V input range accommodates

a variety of step-down applications, including

those in an automotive input environment. A 12µA

shutdown mode quiescent current allows use in

battery-powered applications.

High power conversion efficiency over a wide

load range is achieved by scaling down the

switching frequency at light load condition to

reduce the switching and gate driving losses.

The frequency foldback helps prevent inductor

current runaway during startup and thermal

shutdown

provides

reliable,

fault

tolerant

operation.

By switching at 4MHz, the MP2562 is able to

prevent EMI (Electromagnetic Interference) noise

problems, such as those found in AM radio and

ADSL applications.

The MP2562 is available in small 3mm x 3mm

QFN10 and SOIC8 packages.

FEATURES

• 120μA Quiescent Current(12uA Shutdown)

• Wide 4.5V to 50V Operating Input Range

• 460mΩ Internal Power MOSFET

• Up to 4MHz Programmable Switching

Frequency

• Stable with Ceramic Capacitor

• Internal Soft-Start

• Internally Set Current Limit without external

Current Sensing Resistor

• Up to 95% Efficiency

• Output Adjustable from 0.8V to 47V

• Available in 3x3 QFN10 and SOIC8

Packages

APPLICATIONS

• High Voltage Power Conversion

• Automotive Systems

• Industrial Power Systems

• Distributed Power Systems

• Battery Powered Systems

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

C1

100V

C3

220pF

C6

NS

R2

R1

L1

C4

100nF

C2

6.3V

D1

3.3V

VIN

EN

FREQ

GND

BST

SW

FB

COMP

MP2562

EN

R5

R4

R3

R6

6

10

1,2

5

4

8,9

3

7

10

100

1000

40

50

60

70

80

90

OUTPUT CURRENT (mA)