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AP3019A

BCD Semiconductor
Part Number AP3019A
Manufacturer BCD Semiconductor
Description WHITE LED STEP-UP CONVERTER
Published Aug 17, 2015
Detailed Description Data Sheet WHITE LED STEP-UP CONVERTER AP3019A General Description The AP3019A is an inductor-based DC/DC converter d...
Datasheet PDF File AP3019A PDF File

AP3019A
AP3019A

Overview
Data Sheet WHITE LED STEP-UP CONVERTER AP3019A General Description The AP3019A is an inductor-based DC/DC converter designed to drive up to eight white LEDs in series for backlight.
Only one feedback resistor is needed to control the LED current and obtain required brightness.
A constant frequency 1.
2MHz PWM control scheme is employed in this IC, which means tiny external components can be used.
Specifically, 1mm tall inductor and 0.
22µF output capacitor for a typical application is sufficient.
Additionally, the Schottky diode in boost circuit is integrated on this chip.
AP3019A also provides a disable pin to ease its use for different systems.
The output over-voltage protection is implemented in AP3019A.
When any LED is broken or in other abnormal conditions, the output voltage will be clamped.
The AP3019A is available in standard SOT-23-6 and TSOT-23-6 packages.
Features • Inherently Uniform LED Current • High Efficiency up to 84% • No Need for External Schottky Diode • Output Ov...


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