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AP3031A Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AP3031A Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
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1 / 11 page  Data Sheet 1 May 2009 Rev. 1. 1 BCD Semiconductor Manufacturing Limited WHITE LED STEP-UP CONVERTER AP3031A General Description The AP3031A is an inductor-based DC/DC boost con- verter 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 com- ponents 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 con- dition. The AP3031A includes UVLO, soft-start, cur- rent limit and OTSD to protect the circuit. The AP3031A is available in standard SOT-23-6 pack- age. 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 Fre- quency PWM Dimming · Built-in Thermal Shutdown Function · Under Voltage Lockout Applications · Digital Photo Frame · GPS Receiver · EPC · PDVD Figure 1. Package Type of AP3031A SOT-23-6 |
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