SDB2F3 1.2MHz 1.5A高达28V输出DC-DC升压转换器.pdf

Shouding SDB2F3 1.5A,up to 28V Output 1.2MHz Step-Up Converter FEATURES GENERAL DESCRIPTION  Integrated 0.5Ω Power MOSFET The SDB2F3 is a constant frequency, 5-pin SOT23  40μA Quiescent Current current mode step-up converter intended for small,  2.5V to 5.5V Input Voltage low power applications. The SDB2F3 switches at  1.2MHz Fixed Switching Frequency 1.2MHz and allows the use of tiny, low cost  Internal 1.5A Switch Current Limit capacitors and inductors 2mm or less in height.  Adjustable Output Voltage Internal soft-start results in small inrush current  Internal Compensation and extends battery life. The SDB2F3 operates  Up to 28V Output Voltage from an input voltage as low as 2.5V and can  Automatic Pulse Frequency Modulation generate 28V at up to 100mA from a 5V Mode at Light Loads supply.The SDB2F3 features automatic shifting to  Over 85% Efficiency pulse frequency modulation mode at light loads.  Available in a 5-Pin SOT23-5 Package G The SDB2F3 includes under-voltage lockout, current limiting, and thermal overload protection to prevent damage in the event of an output overload. N APPLICATIONS