Product details


Display type LCD Unipolar IC integration LCD Bias Vin (Min) (V) 8.6 Vin (Max) (V) 14.7 Source driver voltage (Min) (V) 12.8 Source driver voltage (Max) (V) 19 Level shifter/scan driver (ch) 0 Special function HAVDD, I2C I/F, Reset Generator Topology Rating Catalog open-in-new Find other LCD & OLED display power & drivers

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WQFN (RSB) 40 25 mm² 5 x 5 open-in-new Find other LCD & OLED display power & drivers


  • 8.6 to 14.7V Input Voltage Range
  • 6-Bit Boost Converter VDD
  • Programmable Integrated Input-to-Output Isolation Switch
  • Programmable Buck Converter HVDD
  • Programmable Buck Converter VI/O
  • Programmable Buck Converter VCORE
  • Positive charge Pump Controller VGH
  • Temperature Compensation for VGH
  • Negative Charge Pump Controller VGL
  • Reset Signal With Programmable Reset Pulse Duration
  • Programmable Sequencing
  • Thermal Shutdown
    • LCD TVs
    • LCD monitors

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The TPS65168 provides a simple and economic power supply solution for a wide variety of LCD bias applications. The device provides all supply rails needed by a TFT-LCD panel. VI/O, VCORE and RST for the T-Con. VDD and HVDD for the Source Driver and the Gamma Buffer. VGH and VGL for the Gate Driver or the Level Shifter. The VGH voltage can be compensated for low and high adjustable temperatures, if GIP technology is used. The transition from one programmed VGH value to another is made using an external thermistor connected to the IC. All output rails and delay times are programmable by a Two-Wire interface: a single BOM can cover several panel types and sizes whose desired output levels can be programmed in production and stored in a non-volatile memory embedded into the TPS65168. Both VCORE and HVDD are generated by synchronous buck converters which support chip inductors for an optimized solution size.

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Technical documentation

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Type Title Date
* Datasheet TPS65168 Features datasheet Sep. 09, 2010
Application notes Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Generation of a VCOM buffer input using PWM signal Dec. 21, 2015
Application notes Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013
Application notes Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

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