AP3031A

Data Sheet WHITE LED STEP-UP CONVERTER General Description The AP3031A is an inductor-based DC/DC boost converter designed to drive LED arrays. 1.2A switching current allows AP3031A to be used in series 10 LEDs application typically. A constant frequency 1MHz PWM control scheme is employed in this IC, which means tiny external components can be used. Specifically, 1mm tall 22µH inductor and 0.47µF output capacitor for the typical application is sufficient. The over output voltage protection is equipped in AP3031A, which protects the IC under open load condition. The AP3031A includes UVLO, soft-start, current limit and OTSD to protect the circuit. The AP3031A is available in standard SOT-23-6 package. AP3031A Features · · · · · · · · · Fast 1MHz Switching Frequency Wide Input Voltage Range: 2.7V to 16V Low 200mV Feedback Voltage Output Over Voltage Protection:36V Cycle by Cycle Current Limit: 1.2A Built-in Soft-start Built-in Standby Mode to Achieve High Frequency PWM Dimming Built-in Thermal Shutdown Function Under Voltage Lockout Applications · · · · Digital Photo Frame GPS Receiver EPC PDVD www.DataSheet4U.com SOT-23-6 Figure 1. Package Type of AP3031A May 2009 Rev. 1. 1 1 BCD Semiconductor Manufacturing Limited Data Sheet WHITE LED STEP-UP CONVERTER Pin Configuration K Package (SOT-23-6) Pin 1 Dot by Marking AP3031A SW GND FB 1 2 3 6 5 4 VIN OV CTRL Figure 2. Pin Configuration of AP3031A (Top View) Pin Description Pin Number 1 2 3 www.DataSheet4U.com Pin Na...