描述 Description

The AW99706A is a highly accurate, highly matching six-string LCD backlighting power solution for notebook. It is a highly integrated step-up DC-DC converter operating with a wide input voltage for 2.7V to 24V and a temperature range from -40°C to 85°C. The AW99706A integrates a high voltage MOSFET and six high accuracy, high voltage current sinks. Each current sink can be regulated up to 50mA. The LED current can be adjusted via an I2C interface in through a PWM signal. The PWM dimming resolution is up to 12-bit.The AW99706A supports 100kHz to 1.6MHz switching frequency. Flexible selection of switching frequency according to efficiency and component size.Thorough protection features include over temperature, over current protection, input undervoltage lockout, LED open and short detection. The protection status will be showed in register.

特性 Features

Wide Operating Input Voltage: 2.7V ~ 24V High Output Voltage : Up to 40VChannel Current Programmable: 5mA to 50mAChannel Current Regulation with Accuracy ±3% and Matching ±2%Dimming Controls-Direct PWM Dimming up to 25kHz with Minimum 1% Duty (400ns)-PWM to Analog up to 2kHz with 12-bit Resolution, up to 4kHz with 11-bit Resolution, up to 8kHz with 10-bit Resolution -PWM to Mixed up to 2kHz with 12-bit Resolution, up to 4kHz with 11-bit Resolution, up to 8kHz with 10-bit Resolution -PWM to Mixed-26K up 2kHz with 12-bit Resolution, up to 4kHz with 11-bit Resolution, up to 8kHz with 10-bit ResolutionI2C Programs LED Current, Switching Frequency 300kHz to 1.7MHzEmbedded Memory by MTPProtections-LED Strings Open and Short Detection-Current Limit Protection-Voltage Limit Protection-Over-Temperature ProtectionWBQFN 3.5mmX3.5mmX0.75mm-24L Package