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| MP3425 Datasheet, PDF (1/13 Pages) Monolithic Power Systems – 3A, 55V Boost Converter with Programmable Switching Frequency and UVLO | |||
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The Future of Analog IC Technology
MP3425
3A, 55V Boost Converter with
Programmable Switching Frequency
and UVLO
DESCRIPTION
The MP3425 is a current mode step-up
converter with a 3.5A, 90m⦠internal switch to
provide a highly efficient regulator with fast
response. The MP3425 features a programmed
frequency up to 2MHz allowing for easy filtering
and low noise. An external compensation pin
gives the user flexibility in setting loop dynamics,
and operates with small, low-ESR ceramic
output capacitors. Soft-start results in small
inrush current and can be programmed with an
external capacitor. The MP3425 operates from
an input voltage as low as 3.1V and can
generate 48V at up to 350mA from a 12V
supply.
The MP3425 includes under-voltage lockout,
current limiting and thermal overload protection
to prevent damage in the event of an output
overload. The MP3425 is available in a low
profile 14-pin 3x4mm QFN package with
exposed pad.
FEATURES
⢠3.5A, 90mâ¦, 55V Power MOSFET
⢠Uses Tiny Capacitors and Inductors
⢠Wide input range: 3.1V to 22V
⢠Output Voltage as High as 55V
⢠Programmable Fsw: 300kHz â 2 MHz
⢠Programmable UVLO, Soft-Start, UVLO
Hysteresis
⢠Micropower shutdown <1μA
⢠Thermal Shutdown 160 °C
⢠Available in 14-Pin 3x4mm QFN Package
APPLICATIONS
⢠Telecom â Power Supply
⢠Audio - Microphone and Tuner Bias
⢠Automotive
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. MPSâ and âThe
Future of Analog IC Technologyâ are Registered Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
VIN
0805
100V
D1
50V, 3A
VOUT
R1
U1
100k
2
EN
14 FSET
12 SS
MP3425
R4 R5
51k 150k
C5
33nF
VDD 7
13
FB
COMP 1
C2
33nF
R6
20k
R2
383k
R3
10k
C7
3.3nF
MP3425 Rev.1.02
www.MonolithicPower.com
1
6/28/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
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