RT9367C Datasheet | Richtek

I2C Programmable White LED Driver with Dual LDO General Description The RT9367C is an integrated solution for backlighting and phone camera input supply. The part contains a charge pump white LED driver and dual low dropout linear regulators. This IC can be shutdown by pulling ENA low. In the section of charge pump, The RT9367C can power up 4 white LEDs with regulated constant current for uniform intensity. Each channel (LED1-LED4) can support up to 25m A. The part maintains highest efficiency by utilizing a x1/x1.5/x2 fractional charge pump and low dropout current regulators. An internal 5-bit DAC is used for brightness control. Users can easily configure up to 32step of LED current by I2C interface. In the section of linear regulator, The RT9367C prises a dual channel, low noise, and low dropout regulator sourcing up to 300m A at each channel. The range of output voltage can be configured from 1.1V to 3.3V by I2C interface. The outputs of LDO offer 3% accuracy and low dropout voltage of 250m V @300m A. The LDO also provides current limiting and output short circuit thermal folded back protection. Features An Integrated Solution for Backlighting and Phone Camera Input Supply I2C Programmable, 32 Steps Dimming Control and Independent Channel On/Off Control Over Temperature Protection Power On Reset for Data Register Typical 1u A Low Shutdown Current with Interface Fully On Charge Pump White LED Driver ` Over 93% Peak Efficiency Over Li-ion Battery Discharge ` Typical 85% Average Efficiency Over Li-ion Battery Discharge ` Support Up to 4 White LEDs ` Output Current Up to 25m A/Channel 100m A Total ` 60m V Typical Current Source Dropout ` 1% Typical LED Current Accuracy ` 0.7% Typical LED Current Matching ` Automatic x1/x1.5/x2 Charge Pump Mode Transition ` Low Input Noise and EMI Charge Pump ` 5.5V Over Voltage Protection ` Power On/Mode Transition In-rush Protection ` 1MHz Random Frequency Oscillator ` Typical 0.1u A Low Shutdown Current Dual LDO ` Wide...