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AEROSEMI
CASC
MT3540
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 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 MT3540 switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors 2mm or less in height.