MP1541 Datasheet, PDF (1/8 Pages) Monolithic Power Systems – 1.3MHz Boost Converter

The Future of Analog IC Technology
DESCRIPTION
The MP1541 is a 5-pin thin SOT23 current
mode step up converter intended for small, low
power applications. The MP1541 switches at
1.3MHz and allows the use of tiny, low cost
capacitors and inductors 2mm or less in height.
Internal soft start results in small inrush current
and extends battery life. The MP1541 operates
from an input voltage as low as 2.5V and can
generate 12V at up to 200mA from a 5V supply.
The MP1541 includes under-voltage lockout,
current limiting, and thermal overload protection
to prevent damage in the event of an output
overload. The MP1541 is available in a small
5-pin TSOT23 package.
MP1541
1.3MHz Boost Converter
FEATURES
ƒ On Board Power MOSFET
ƒ Uses Tiny Capacitors and Inductors
ƒ 1.3MHz Fixed Switching Frequency
ƒ Internally Compensated
ƒ Internal Soft-Start
ƒ Operates with Input Voltage as Low as 2.5V
and Output Voltage as High as 22V
ƒ 12V at 200mA from 5V Input
ƒ UVLO, Thermal Shutdown
ƒ Internal Current Limit
ƒ Available in a TSOT23-5 Package
APPLICATIONS
ƒ Camera Phone Flash
ƒ Handheld Computers and PDAs
ƒ Digital Still and Video Cameras
ƒ External Modems
ƒ Small LCD Displays
ƒ White LED Driver
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
D1
V_IN
5V
OFF ON
5
1
4 ^IN
SW
EN
MP1541
2 _GND
FB ³
V_OUT
12V
200mA
MP1541-TAC01
Efficiency vs Load Current
100
95
V_IN = 5V
90
85
80
75
V_IN = 3.3V
V_IN = 4.2V
70
65
60
55
V_OUT = 12V
50
0 75 150 225 300 375 450
LOAD CURRENT (mA)
MP1541-TAC-EC01
MP1541 Rev.1.3
www.MonolithicPower.com
1
3/20/2006
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© 2006 MPS. All Rights Reserved.