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AP3033 Datasheet(PDF) 1 Page - BCD Semiconductor Manufacturing Limited |
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AP3033 Datasheet(HTML) 1 Page - BCD Semiconductor Manufacturing Limited |
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1 / 13 page  Preliminary Datasheet 1 Jan. 2010 Rev. 1. 0 BCD Semiconductor Manufacturing Limited WHITE LED STEP-UP CONVERTER AP3033 General Description The AP3033 is an inductor-based DC/DC boost con- verter designed to drive LED arrays. 1.3A switching current allows AP3033 to be used in different 7' to 10' LCD panel backlights (3S8P LED arrays 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 10µH inductor and 10µF output capacitor for the typical application is sufficient. The over output voltage protection is equipped in AP3033, which protects the IC under open load condi- tion. The AP3033 includes UVLO, soft-start, standby mode, current limit and OTSD to protect the circuit. The AP3033 is available in standard TSOT-23-6 pack- age. Features · Up to 92% Efficiency (VIN=9V, IOUT=160mA) · Up to 88% Efficiency (VIN=5V, IOUT=160mA) · Fast 1MHz Switching Frequency · Wide Input Voltage Range: 3V to 16V · Low 200mV Feedback Voltage · Output Over Voltage Protection · Cycle by Cycle Current Limit: 1.3A · High Frequency PWM Dimming · Built-in Soft-start · Built-in Thermal Shutdown Function · Under Voltage Lockout Applications · 7' to 10' LCD Panels · Digital Photo Frame · GPS Receiver · Netbook · PDVD Figure 1. Package Type of AP3033 TSOT-23-6 |
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