MT3540 Datasheet | Aerosemi

AEROSEMI CASC 1.5A,up to 28V Output 1.2MHz Step-Up Converter 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 pensation - 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 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 low as 2.5V and can generate 28V at up to 100m A from a 5V supply.The MT3540 Features automatic shifting to pulse frequency modulation mode at light loads. The MT3540 includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an output overload. The MT3540 is available in a small 5-pin SOT-23 package. TYPICAL APPLICATION CIN 10μF L...