Features
Support 0.3% PWM dimming
200mV Reference Voltage in Backlight Mode
1000mV Reference Voltage in Flash Mode
350ms Flash Mode Timer
PWM control input for CABC operation
1.1MHz Switching Frequency
38V Over-voltage Protection for up to 10 LEDs in Series
2.7V to 5.5V Input Voltage Range
Over-current and Over-temperature Protection
Built-in Soft-start Limits Inrush Current
DFN 2mm X2mm X0.75mm-6L package
Description
The AW9968 is a white LED driver with integrated boost converter. The boost converter runs at 1.1MHz fixed switching frequency, with an internal 40V, 3A switch FET, the AW9968 can drive one string (up to 10 LEDs) and parallel LED strings.
Ａｎｄ it is quite applicable for smart phone as a flash mode light source, it can drive up to 3 times of full scale backlight current for 350ms when Strobe interface is high.
The full-scale WLED current can be set by the equation 200mV/RSET in backlight mode. RSET should be changed for parallel applications.
AW9968 integrates built-in soft-start function to minimize the power supply inrush current. AW9968 also integrates over-current protection , LED open protection and over temperature protection(OTP) to prevent chip from entering abnormal operating conditions.
