AP3019A - WHITE LED STEP-UP CONVERTER

BCD Semiconductor

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.

Key Features

Inherently Uniform LED Current.
High Efficiency up to 84%.
No Need for External Schottky Diode.
Output Over-voltage Protection (OVP).
Fixed 1.2MHz Switching Frequency.
Uses Tiny 1mm Tall Inductor.
Requires Only 0.22µF Output Capacitor.

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AP3019A white led step-up converter by BCD Semiconductor - Datasheet Preview

Datasheet Details

Part number	AP3019A
Manufacturer	BCD Semiconductor
File Size	390.74 KB
Description	WHITE LED STEP-UP CONVERTER
Datasheet	AP3019A Datasheet

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Full PDF Text Transcription (Reference)

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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.