MT3540 - Aerosemi

MT3540 1.2MHz Step-Up Converter

The MT3540 is a constant frequency, 5-pin SOT23 current mode step-up converter intended for small, low power applications. The MT3540 switches at 1.2MHz 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 MT3540 operates from an input voltage as.

Features

 Integrated 0.5Ω Power MOSFET
 40μA Quiescent Current
 2.5V to 5.5V Input Voltage
 1.2MHz Fixed Switching Frequency
 Internal 1.5A Switch Current Limit
 Adjustable Output Voltage
 Internal Compensation
 Up to 28V Output Voltage
 Automatic Pulse Frequency Modulation Mode at Light Loads
 Over 85% Efficiency
 Available in a 5-Pin SOT23-5 Package APPLICATIONS
 OLED Biasing
 LCD Bias Supply
 White LED Driver
 PDAs
 Digital Still Cameras GENERAL DESCRIPTION The MT3540 is a constant frequency, 5-pin SOT23 current mode step-up converter intended for small, low power applications. The .