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PT4301 - 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver

General Description

The PT4301 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver with three dimming modes.

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

Three LED dimming modes enable user to dimming 1 to 4 LED all together or separately.

Key Features

  • 3V-5.5V input voltage 1x/1.5x auto-adjust charge pump Set LED current by external resistor Programming 4-channel LED current up to 25mA with 8 levels through EN/SET pin Dimming LED by PWM signal through 3 control terminal LED fault detection No inductor Less than 1uA shut down current Built-in soft-start and soft mode decision.

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Datasheet Details

Part number PT4301
Manufacturer Unknown Manufacturer
File Size 71.27 KB
Description 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver
Datasheet download datasheet PT4301 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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LED Driver PT4301 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver With 3Dimming Modes GENERAL DESCRIPTION The PT4301 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver with three dimming modes. Auto-adjust charge pump achieve high efficiency for Li-Ion battery supply. Three LED dimming modes enable user to dimming 1 to 4 LED all together or separately. Few external component (two flying capacitors, and two filter capacitors at VIN and VOUT) make the PT4301 ideally suited for mobility application. The current through the LED can be pre-set by external resistor. And the current can also be regulated from 3mA to 25mA in 3mA step by the EN/SET pin, which is a digital interface to enable, disable the chip and set the LED current.