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TPS61197 Datasheet Single-string White-led Driver

Manufacturer: Texas Instruments

Overview: Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design TPS61197 SLVSC25B – JULY 2013 – REVISED JUNE 2017 TPS61197 Single-String White-LED Driver for LCD TV.

General Description

The TPS61197 provides highly integrated solutions for LCD TV backlighting.

This device is a currentmode boost controller driving one WLED string with multiple LEDs in series.

The TPS61197 adjusts the output voltage of the boost controller automatically to provide only the minimum voltage required by the LED string to generate the setting LED current, thereby optimizing the efficiency of the driver.

Key Features

  • 1 8-V to 30-V Input Voltage.
  • 50-kHz to 800-kHz Programmable Switching Frequency.
  • Adaptive Boost Output to White-LED Voltage.
  • High-Precision PWM Dimming Resolution up to 5000:1.
  • Programmable Overvoltage Protection Threshold at Output.
  • Programmable Undervoltage Threshold at Input with Adjustable Hysteresis.
  • Adjustable Soft-Start Time Independent of Dimming Duty Cycle.
  • Built-in LED Open and IFB Short Protections.
  • Built.

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