AP3019 - WHITE LED STEP-UP CONVERTER

BCD Semiconductor

General Description

The AP3019 is an inductor-based DC/DC converter designed to drive up to five white LEDs in series for backlight.

Only one feedback resistor is needed to control the LED current and obtain satisfied brightness.

Key Features

Inherently Uniform LED Current High Efficiency up to 84% No Need for Extra Schottky Diode Over Output Voltage Protection Drives 2 to 5 LEDs Fast 1.0MHz Switching Frequency Uses Tiny 1mm Tall Inductor Requires Only 0.22µF Output Capacitor.

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AP3019 white led step-up converter by BCD Semiconductor - Datasheet Preview

Datasheet Details

Part number	AP3019
Manufacturer	BCD Semiconductor
File Size	287.33 KB
Description	WHITE LED STEP-UP CONVERTER
Datasheet	AP3019 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Preliminary Datasheet WHITE LED STEP-UP CONVERTER General Description The AP3019 is an inductor-based DC/DC converter designed to drive up to five white LEDs in series for backlight. Only one feedback resistor is needed to control the LED current and obtain satisfied brightness. A constant frequency 1.0MHz PWM control scheme is employed in this IC, which means the tiny external components can be used. In fact, 1mm tall inductor and 0.22µF output capacitor for the typical application is very appropriate. Additionally, the schottky diode in boost circuit is integrated in this chip. AP3019 also provides a disable port to ease its use for different systems. The over output voltage protection is equipped in AP3019.