MP1567DQ MPS [Monolithic Power Systems], MP1567DQ Datasheet

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MP1567DQ

Manufacturer Part Number
MP1567DQ
Description
1.2A, 6V, 800KHz Synchronous Rectified Step-Down Converter
Manufacturer
MPS [Monolithic Power Systems]
Datasheet
1.MP1567DQ.pdf (5 pages)

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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
EV0060 EVALUATION BOARD
EV0060 Rev. 1.2
4/22/2005
Parameter
Input Voltage
Output Voltage
Output Current
Board Number
Dimensions (2.5”X x 2.0”Y x 0.4”Z)
EV0060
Symbol
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
V
I
V
OUT
OUT
IN
MPS IC Number
MP1567DQ
2.6 to 6
Value
1.8
1.2
© 2005 MPS. All Rights Reserved.
www.MonolithicPower.com
Units
V
V
A
1.2A, 6V, 800KHz Synchronous Rectified
FEATURES
•
•
•
•
•
•
•
•
•
•
•
APPLICATIONS
•
•
•
•
•
of Monolithic Power Systems, Inc.
“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks
1.2A Output Current
Synchronous Rectified
Internal 180mΩ and 220mΩ Power Switches
V
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
SOHO Routers, PCMCIA Cards, Mini PCI
Handheld Computers, PDAs
Cell Phones
Digital Video Cameras
Small LCD Displays
IN
Range of 2.6V to 6V
100
90
80
70
60
50
40
30
20
10
EV0060 (MP1567)
0
10
Efficiency vs
Load Current
V
IN
V
=3.3V
LOAD CURRENT (mA)
IN
Step-Down Converter
=5V
EVALUATION BOARD
V
100
IN
=4V
V
OUT
=1.8V
MP1567_EC01
1000
1

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MP1567DQ Summary of contents

Page 1

... Output Voltage V OUT Output Current I OUT EV0060 EVALUATION BOARD Dimensions (2.5”X x 2.0”Y x 0.4”Z) Board Number MPS IC Number EV0060 MP1567DQ EV0060 Rev. 1.2 4/22/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 1.2A, 6V, 800KHz Synchronous Rectified FEATURES • 1.2A Output Current • Synchronous Rectified • ...

Page 2

EV0060 – 1.2A, 6V, 800KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER EVALUATION BOARD SCHEMATIC IN C1 C11 NS 10nF GND OUT C9 NS GND EV0060 BILL OF MATERIALS Qty Ref Value C1 C2, C8 10µF C3, ...

Page 3

EV0060 – 1.2A, 6V, 800KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER PRINTED CIRCUIT BOARD LAYOUT Figure 1—Top Silk Layer EV0060 Rev. 1.2 4/22/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. Figure 2—Top Layer Figure 3—Bottom Layer www.MonolithicPower.com © 2005 MPS. All ...

Page 4

EV0060 – 1.2A, 6V, 800KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER TYPICAL PERFORMANCE CHARACTERISTICS V = 3.3V 1.8V +25°C, unless otherwise noted. IN OUT A Current Limit vs. Duty Cycle 2.5 2.0 1.5 1.0 0 ...

Page 5

EV0060 – 1.2A, 6V, 800KHz SYNCHRONOUS RECTIFIED STEP-DOWN CONVERTER QUICK START GUIDE The output voltage of this board is set to 1.8V. The board layout accommodates most commonly used inductors and output capacitors. 1. Attach the positive and negative ends ...

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