TPS61196

The Texas Instruments TPS61196 is an active 6-string WLED driver with a continuous output current of 200 mA per channel and a pulse output of 400 mA. It operates with an input voltage range of 8-V to 30-V and can provide an output voltage of up to 120-V. This boost topology driver features independent PWM dimming for each string, offering a high resolution of up to 5000:1 for precise brightness control.

Key electrical specifications include a programmable switching frequency up to 800 kHz and a maximum duty cycle of 96%. The device boasts a peak efficiency of 96% and ±1.5% current matching between strings, ensuring uniform illumination. It is designed with built-in protections such as LED open/short, Schottky diode open/short, ISET short, IFB short, and thermal shutdown.

The TPS61196 operates within an ambient temperature range of -40°C to 85°C. It is housed in a HTSSOP (PWP) package with an area of 62.08 mm². This driver is suitable for applications requiring multiple LED strings with independent dimming capabilities, such as backlighting for displays and general illumination.

Features include programmable overvoltage and undervoltage thresholds, adjustable hysteresis, and an adjustable soft start time independent of dimming duty cycle. These features allow for robust and flexible system design.