AP3012

1.5MHz STEP-UP DC-DC CONVERTER General Description Features Data Sheet AP3012 The AP3012 is a high power, constant frequency, current mode PWM, inductor based, step-up (boost) converter. The converter operates at high frequency (1.5MHz) so that a small, low profile inductor can be used. The AP3012 has built-in overvoltage protection (OVP) to allow the device goes into shutdown mode when the output voltage exceeds the OVP threshold of 29V. The AP3012 is available in standard SOT-23-5 package. · High Efficiency up to 81% · Adjustable Output Voltage up to 29V · Shutdown Current 1µA Typical · 1.5MHz Switching Frequency · 36V 500mA Rugged Integrated Bipolar Switch · Built-in Soft-start to Reduce Inrush Current Dur- ing Start-up · On-chip Overvoltage Protection · Uses Low ESR Ceramic Output Capacitor · Uses Small Inductor Applications · LCD/OLED Display Bias Supply · White LED Driver for LCD Display Backlights · Cellular Phones May 2010 Rev. 1. 6 SOT-23-5 Figure 1. Package Type of AP3012 BCD Semiconductor Manufacturing Limited 1 1.5MHz STEP-UP DC-DC CONVERTER Pin Configuration K Package (SOT-23-5) SW 1 GND 2 FB 3 5 VIN 4 SHDN Figure 2. Pin Configuration of AP3012 (Top View) Data Sheet AP3012 Pin Description Pin Number Pin Name Function Switch Pin. Connect inductor/diode here. The output voltage can go up to 29V but should not 1 SW exceed this limit. If the voltage on this pin is higher than the overvoltage protection (OVP) threshold, the device can go into shutdown...