MP8040

High Current

Integrated Half Bridge + Driver

MP8040 Rev. 1.5

www.MonolithicPower.com

1

5/3/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

The Future of Analog IC Technology

TM

TM

DESCRIPTION

The MP8040 is a general purpose, high

frequency half bridge power driver capable of

driving a 9A load. The devices integrates both

top and bottom N-Channel MOSFET power

switches and is fully protected from both

sourcing and sinking current by a preset

cycle-by-cycle current limit. It has a wide input

voltage range from 7.5V to 25V.

The MP8040 features a low-current shutdown

mode, input under-voltage protection, thermal

shutdown, and fault flag signal output. It

interfaces with standard logic signals and is

available in a small 8-pin SOIC with exposed

pad package.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV0041

3.5”X x 3.5”Y x 1.2”Z

FEATURES

• ±9A Peak Current Output

• ±4.25A Continuous Current Output

• Up to 1.2MHz Switching Frequency

• Protected Integrated Power 100mΩ Switches

• All Switches Current Limited

• Integrated Under-Voltage Protection

• Integrated Thermal Protection

• 2.5µA Standby Mode

• True 2-Quadrant Operation

• Sources and Sinks Current

• Fault Indicator Output

APPLICATIONS

• Class D Audio Driver

o

25W/4Ω/10% Output Power Single Ended

o

70W/4Ω/10% Output Power Full Bridge

• Full or Half Bridge DC-DC Switching Regulator

• Motor Driver

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP8040

SP

BS

SW

GND

FLT

DRV

2

4

7

8

6

1

3

5

SHDN

PWM

FAULT

ENABLE

PWM

SIGNAL

47nF

+

MP8040_TAC_S01