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RT9364 - 80mA 4-Channel Charge Pump White LED Driver

General Description

The RT9364 is a high performance white LED driver.

It integrates current sources and automatic mode selection charge pump.

The part maintains the high efficiency by utilizing an x1/x1.5 fractional charge pump and low dropout current sources.

Key Features

  • z 85% Average Efficiency Over Battery Life z Support up to 4 White LEDs z 80mV Typical Current Source Dropout z Support up to 80mA Output Current z 1% Typical LED Current Accuracy z 0.7% Typical LED Current Matching z Soft Start Function z Auto Charge Pump Mode Selection z 250kHz Fixed Frequency Oscillator z Output Over Voltage Protection z 16-Step Brightness Control z Low Input Noise and EMI z Low 0.3μA Shutdown Current z RoHS Compliant and 100% Lead (Pb)-Free.

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Datasheet Details

Part number RT9364
Manufacturer Richtek Technology
File Size 179.30 KB
Description 80mA 4-Channel Charge Pump White LED Driver
Datasheet download datasheet RT9364 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 RT9364 80mA 4-Channel Charge Pump White LED Driver with Low Dropout Current Source General Description The RT9364 is a high performance white LED driver. It integrates current sources and automatic mode selection charge pump. The part maintains the high efficiency by utilizing an x1/x1.5 fractional charge pump and low dropout current sources. The small equivalent x1 mode open loop resistance and ultra-low dropout voltage of current source extend the operating time of x1 mode and optimize the efficiency of Li-ion battery in white LED applications. The RT9364 supports up to 4 white LEDs and regulates a constant current for uniform intensity. The part implements a 4-bit DAC for brightness control. Users can easily configure the LED current from 1.25mA to 20mA by a serial pulse.