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PT4303 - 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver

General Description

The PT4303 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver with two dimming modes.

Auto-adjust charge pump achieves high efficiency for Li-Ion battery supply.

The two LED dimming modes enable users to dim the four LEDs all together or individually.

Key Features

  • z 3V-5.5V input voltage z 1x/1.5x auto-adjust charge pump z Set LED current by external resistor z Dimming LED by PWM signal through 2 control terminal z LED fault detection z.

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Datasheet Details

Part number PT4303
Manufacturer Powtech
File Size 343.33 KB
Description 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver
Datasheet download datasheet PT4303 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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PT4303 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver with Two Dimming Modes GENERAL DESCRIPTION The PT4303 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver with two dimming modes. Auto-adjust charge pump achieves high efficiency for Li-Ion battery supply. The two LED dimming modes enable users to dim the four LEDs all together or individually. Only a few external components (two flying capacitors and two filter capacitors at VIN and VOUT) are needed, which makes the PT4303 ideally suited for mobile applications. The current through the LED can be set by an external resistor. The four LEDs can be turned on and off individually or in a group of two to four through the two control terminals, which can also be used to dim the LEDs by applying PWM control signals.