MP8042

High Current, Dual Channel

Power Half-Bridge

INITIAL RELEASE – SPECIFICATIONS SUBJECT TO CHANGE

MP8042 Rev. 0.9

www.MonolithicPower.com

1

5/23/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

The Future of Analog IC Technology

TM

TM

DESCRIPTION

The MP8042 is a dual channel power half-

bridge that can be configured as the output

stage of a Class-D audio amplifier. Each

channel can be driven independently as stereo

single ended audio amplifiers, or driven

complementary in a bridge tied load (BTL)

audio amplifier configuration.

The MP8042 features a low current shutdown

mode, standby mode, input under voltage

protection, thermal shutdown and fault flag

signal output. Both channels of the driver

interface with standard logic signals. The

MP8042 is available in a 20-pin TSSOP (with

Exposed Pad) package.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV8042DF-00B

3.5”X x 4.0”Y x 1.0”Z

FEATURES

• ±5A Peak Current Output

• Up to 600KHz Switching Frequency

• Protected Integrated Power 150mΩ Switches

• 30ns Switch Dead Time

• All Switches Current Limited

• Internal Under Voltage Protection

• Internal Thermal Protection

• 2.1mA Operating Current

• Fault Output Flag

• Stereo Single Ended: 20W/Channel, 4Ω Load

• Bridge Tied Load Output Power: 40W, 8Ω Load

APPLICATIONS

• Class D Audio Drivers

• Full or Half-Bridge DC-DC Switching

Regulators

• Motor Drivers

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

Power Systems, Inc.

TYPICAL APPLICATION

MP8042

U1

NC

AGND1

PWM1

STBY

PWM2

FAULT

SHDN

AGND2

NC

VDR2

VDR1

BST1

PGND1

OUT1

VDD1

NC

VDD2

OUT2

PGND2

BST2

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

VCC

VCC

VDD

CN1

CN2

OUT1

OUT2

GND

PWM1

+

VCC

D4

D5

D7

D6

D2

1N4148

D3

1N4148

STBY

PWM2

FAULT

SHDN