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 150m 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, 4 Load
• Bridge Tied Load Output Power: 40W, 8 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