AW99703

AW99703 Dec. 2019 V1.2 High Efficiency, 3-Channel WLED Driver with Flash Function Feature General Description  ±1% current matching across voltage, AW99703 is a highly accurate, highly matching temperature, and process three-string LCD backlighting power solution. It is a  ±3% current accuracy across voltage, temperature, and process  High efficiency, up to 91%  Up to 29.6mA/string in backlight mode and up to 79.9mA/string in flash mode  I2C/PWM dual dimming control mode  11-bit I2C exponential or linear mapping with programmable transition ramp time  Programmable current sink turn on/off ramp time  Selectable boost converter switching frequency 1MHz or 500kHz with shift up and down option l highly integrated step-up DC-DC converter operating with a wide input voltage from 2.7V to 5.5V and a temperature range from -40°C to 85°C, accommodating 1-cell lithium ion battery or 5V ia supply. t The AW99703 integrates a high voltage MOSFET, and three high accuracy, high voltage current sinks. n Each current sink can be regulated up to 29.6mA in backlight mode. In flash mode, flash current sink e can be regulated up to 79.9mA, and flash timeout can be regulated up to 1.5sec. d The LED current is adjusted via an I2C interface or fi through a logic level PWM input. The PWM duty  Programmable slew rate control minimize switching noise and improve EMI performance ncycle is internally sensed and mapped to an 11-bit linear current.  o Five configurable OVP thresholds ...