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
V
OUT
V
SP
+
MP8040_TAC_S01
