The RT8565 is a high efficiency LED driver IC capable of driving 6 LEDs. The RT8565 integrates 26V/0.9A power switch with an internal Schottky diode.
The RT8565 is a current mode boost converter which is fixed at 600kHz operating frequency and has a wide input voltage range from 2.8V to 4.5V.
The LED current is set with an external resistor and the feedback voltage is regulated to 200mV. During operation, an internal 6-bit DAC is used for brightness control. Users can easily configure up to 64 steps of LED current via the EN pin.
During brightness dimming, the RT8565 does not burst the LED current. Therefore, no audible noises are generated on the output capacitor. The RT8565 also has internal over voltage protection setting to prevent the output from exceeding the absolute maximum ratings during open LED conditions.
The RT8565 is available in a small WQFN-8L 1.6x1.6 package.
Applications
- GPS, Portable DVD Backlight
- Mobile Phone, Smart Phone