EV0060 (MP1567)
1.2A, 6V, 800KHz Synchronous Rectified
Step-Down Converter
EVALUATION BOARD
EV0060 Rev. 1.2 www.MonolithicPower.com 1
4/22/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
The Future of Analog IC Technology
GENERAL DESCRIPTION
The EV0060 is an evaluation board for the
MP1567, a 1.2A, 800KHz DC to DC converter
designed for low voltage applications requiring
high efficiency. Capable of providing output
voltages as low as 0.9V from a 3.3V supply
voltage, the MP1567 eliminates the need for a
5V rail, providing over 90% efficiency via
synchronous rectification and eliminating heat
issues in confined spaces. Soft-start operation
protects internal circuitry from hard turn on
issues. Switching at 800KHz reduces the size
of external components and thereby reduces
board space.
The MP1567 includes cycle-by-cycle current
limiting and under voltage lockout. Internal
power switches combined with the tiny 10-pin
QFN package provide a solution requiring a
minimum of space.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Voltage V
IN
2.6 to 6 V
Output Voltage V
OUT
1.8 V
Output Current I
OUT
1.2 A
FEATURES
• 1.2A Output Current
• Synchronous Rectified
• Internal 180m and 220m Power Switches
• V
IN
Range of 2.6V to 6V
• Over 90% Efficiency
• Zero Current Shutdown Mode
• Under Voltage Lockout Protection
• Soft-Start Operation
• Thermal Shutdown
• Internal Current Limit (Source & Sink)
• Tiny 10-Pin QFN Package
APPLICATIONS
• SOHO Routers, PCMCIA Cards, Mini PCI
• Handheld Computers, PDAs
• Cell Phones
• Digital Video Cameras
• Small LCD Displays
“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks
of Monolithic Power Systems, Inc.
EV0060 EVALUATION BOARD
Dimensions (2.5”X x 2.0”Y x 0.4”Z)
Board Number MPS IC Number
EV0060 MP1567DQ
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
10 100 1000
LOAD CURRENT (mA)
MP1567_EC01
Efficiency vs
Load Current
V
IN
=5V
V
IN
=4V
V
IN
=3.3V
V
OUT
=1.8V