EVQ3425-L-00A
Boost Converter
With a 55V, 3.5A Switch
EVQ3425-L-00A. Rev. 1.0 www.MonolithicPower.com 1
1/20/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The MPQ3425 is a current mode step-up
converter with a 3.5A, 90m internal switch to
provide a highly efficient regulator with fast
response. The MPQ3425 operates at a
programmed fix frequency up to 2MHz allowing
for easy filtering and low noise. An external
compensation pin gives the user flexibility in
setting loop dynamics, which allows the use of
small, low-ESR ceramic output capacitors. Soft-
start results in small inrush current and can be
programmed with an external capacitor. The
MPQ3425 includes under-voltage lockout,
current limiting and thermal overload protection
to prevent damage in the event of an output
overload. The MPQ3425 is available in a low
profile 14-pin QFN package with exposed pad.
ELECTRICAL SPECIFICATIONS
Paramete
Symbol
alue Units
Input Voltage V
IN
10 – 22 V
Output Voltage V
OUT
48 V
Output Current I
OUT
350 mA
FEATURES
• 3.5A, 90m, 55V Power MOSFET
• Uses Tiny Capacitors and Inductors
• Wide input range: 3V to 22V
• Output Voltage as High as 55V
• Programmable F
SW
: 300kHz – 2 MHz
• Programmable UVLO, Soft-Start
• Micro power shutdown : I
q
< 1uA
• Thermal Shutdown 150 Deg C
• Available in an 8-Pin SOIC and 14-Pin QFN
Package with Exposed Pad
APPLICATIONS
• Audio - Microphone and Tuner Bias
• Telecom – Power Supply
• Automotive – Battery Charger
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
EVQ3425-L-00A EVALUATION BOARD
EFFICIENCY (%)
I(A)
Efficiency
50
55
60
65
70
75
80
85
90
95
100
0.010
0.100 1.000
V
IN
=12V,V
O
=48V,F=1.2MHz
V
IN
=12V,V
O
=48V,F=600kHz
V
IN
=12V,V
O
=48V,F=300kHz
L×W (2.5” X 2.5”)
Board Numbe
IC Numbe
EVQ3425-L-00A MPQ3425-L