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
• 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
• 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.

D1 VIN 5V

OFF ON

MP1540
2 GND

VOUT 12V 200mA

MP1540_TAC01

EFFICIENCY %

Efficiency vs Load Current

VIN = 5V

VIN = 3.3V

VIN = 4.2V
50 0 75 150 225 300 375 450

LOAD CURRENT mA

MP1540_TAC_EC01
2/14/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.

MP1540 1.3MHz, 18V STEP-UP CONVERTER

PACKAGE REFERENCE

TOP VIEW

D9YW

GND 2

MP1540_PD01_TSOT23-5

Part Number*

Package

Temperature

MP1540DJ

TSOT23-5 to +85°C
* For Tape & Reel, add suffix eg.

For Lead Free, add suffix eg.

ABSOLUTE MAXIMUM RATINGS 1

SW Pin to +20V All Other Pins to +6.5V Junction Temperature 150°C Lead 260°C Storage Temperature to +150°C

Recommended Operating Conditions 2