G5966L Global Mixed-mode Technology Boost WLED Driver for Backlights Features General Description The G5966L is a 6-channel boost WLED driver for backlight applications. It features a high-performance boost converter, six channel current sink with 3% current matching and accuracy, and PWM brightness dimming control. 3.2V to 24 V Input Supply Voltage Boost Converter Automatically Adjusting Output Voltage 1.0MHz Switching Frequency Integrated 2.0A 40V NFET Internal Loop Compensation and Soft Start Over Current Protection Over Voltage Protection Over 90% High Efficiency Six Channel Current Sink Maximum 30mA Current Sink 3% Current Matching and Accuracy 100:1 PWM Brightness Dimming Range Open/Short LED protection Thermal Shutdown Small 16-pin 3mmx3mm TQFN package The boost converter automatically provides the regulated output voltage for the WLED backlight without the need to calculate the output for different LED types. The switching frequency is 1MHz. It also integrates a 40V NFET that provides high output power. The 6-channel current sink is ideal for constant current driving, and, well matched less than 3% (typical). To set the maximum driving current, the ISET pin is used to determine reference current. Each channel of the current sink is set to 1000 times of this reference current. A PWM pin can be used for PWM dimming. The G5966L provides many protection schemes to avoid any abnormal operation. Over current protection is designed to protect internal NFET. It also provides over voltage and over temperature protection. The G5966L can detect open or short LED and offer protections. Applications Notebook Displays LED Backlighting LCD Monitor LED Backlighting The G5966L is available in a 16-pin 3x3mm TQFN package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5966LR41U 5966L -40°C to 85°C TQFN3X3-16 Note: R4: TQFN3X3-16 1: Bonding Code U: Tape & Reel NC EN CH6 CH5 15 14 13 8 4 CH2 OUT 7 3 CH1 IN Thermal Pad 6 2 BYP SW 5 1 ISET PGND 16 Pin Configuration 12 CH4 11 PWM 10 GND 9 CH3 G5966L TQFN3X3-16 Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.5 Jul 30, 2013 1