EV1517DR-00B
3.3V, 1A Sepic
Evaluation Board
EV1517DR-00B Rev. 1.0 www.MonolithicPower.com 1
12/21/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
The Future of Analog IC Technology
TM
TM
GENERAL DESCRIPTION
The EV1517DR-00B is a MP1517 evaluation board
that is configured to provide a regulated 3.3V output
at up to 1A from a 3V to 4.2V input. The output
voltage is adjustable by changing resistors on the
evaluation board. The high 1.1MHz switching
frequency allows for smaller external components
producing a compact solution for a wide range of
load currents. Soft-start, cycle-by-cycle current
limiting, and input under voltage lockout prevent
overstressing or damage to sensitive external
circuitry at startup and output short-circuit conditions.
Current-mode regulation and external compensation
components allow the MP1517 control loop to be
optimized over a wide variety of input voltage, output
voltage, and load current conditions.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Voltage V
IN
3-4.2 V
Output Voltage V
OUT
3.3 V
Output Current I
OUT
1 A
FEATURES
• Provides 3.3V, 1A Output from as Low as
3V Input
• Over 80% Efficiency
• Inherent Output Disconnect at Shutdown Mode
• 1.1MHz Switching Frequency
• 0.5µA Shutdown Current
• Fully Assembled and Tested
APPLICATIONS
• Boost and SEPIC Regulators
• Handheld Computers
• Cell Phone Camera Flash, PDAs
• Digital Still and Video Cameras
“MPS” and “The Future of Analog IC Technology”, are Trademarks of Monolithic
Power Systems, Inc.
EV1517DR-00B EVALUATION BOARD
(L x W x H) 2.0” x 2.0” x 0.4”
(5cm x 5cm x 1cm)
Board Number MPS IC Number
EV1517DR-00B MP1517DR
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
1 10 100 1000
LOAD CURRENT (mA)
MP1517-EC01
Efficiency vs
Load Current
V
IN
=3V
V
IN
=3.6V
V
IN
=4.2V
