MP1540DJ-LF-P Datasheet, PDF (1/8 Pages) MPS Industries, Inc. – 1.3MHz, 18V Step-Up Converter

TM
The Future of Analog IC Technology ^TM
DESCRIPTION
The MP1540 is a 5-pin thin TSOT23 current
mode step-up converter intended for small, low
power applications. The MP1540 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 MP1540 operates
from an input voltage as low as 2.5V and can
generate 12V at up to 200mA from a 5V
supply.
The MP1540 includes under voltage lockout,
current limiting, and thermal overload
protection to prevent damage in the event of an
output overload. The MP1540 is available in a
small 5-pin TSOT23 package.
MP1540
1.3MHz, 18V
Step-Up Converter
FEATURES
• On Board Power MOSFET
• Uses Tiny Capacitors and Inductors
• 1.3MHz Fixed Switching Frequency
• Internal Soft-Start
• Operates with Input Voltage as Low as
2.5V and Output Voltage as High as 18V
• 12V at 200mA from 5V Input
• UVLO, Thermal Shutdown
• Internal Current Limit
• Available in a TSOT23-5 Package
APPLICATIONS
• Camera Phone Flash
• Handheld Computers and PDAs
• Digital Still and Video Cameras
• External Modems
• Small LCD Displays
• White LED Driver
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
D1
V_IN
5V
OFF ON
5
1
IN
SW
4
EN
MP1540
2 _GND
FB ³
V_OUT
12V
200mA
MP1540_TAC01
Efficiency vs Load Current
100
95
V_IN = 5V
90
85
80
V_IN = 3.3V
75
V_IN = 4.2V
70
65
60
55
50
0 75 150 225 300 375 450
LOAD CURRENT (mA)
MP1540_TAC_EC01
MP1540 Rev. 1.1
www.MonolithicPower.com
1
2/14/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.