DESCRIPTION
●The TPS61196 provides a highly integrated solution for LCD TV backlight with an independent PWM
●dimming function for each string. This device is a current mode boost controller driving up to six WLED
●strings with multiple LEDs in series. Each string has an independent current regulator providing a LED
●current adjustable from 50mA to 400mA within ±1.5% matching accuracy.
●FEATURES
●• 8V to 30V Input Voltage
●• Up to 120V Output Voltage
●• 100KHz to 800kHz Programmable Switching Frequency
●• Adaptive Boost Output for LED Voltages
●• Six Current Sinks, 200mA Continuous Output / 400mA Pulse Output for Each String
●• ±1.5% Current Matching Between Strings
●• High Precision PWM Dimming Resolution up to 5000:1
●• Programmable Over-voltage Threshold at Output and Each Current Sink
●• Programmable Under-voltage Threshold at Input with Adjustable Hysteresis
●• Adjustable Soft Start Time Independent of Dimming Duty Cycle
●• Built-in LED Open/Short Protection
●• Built-in Schottky Diode Open/Short Protection
●• Built-in ISET Short Protection
●• Built-in IFB Short Protection
●• Thermal Shutdown
●• 28L HTSSOP Package with PowerPAD
●APPLICATIONS
●• LCD TV Backlight
●• Scan Mode LCD TV Backlight
