TPS65642 LCD Bias with Integrated Gamma Reference for Notebook PCs and Tablet PCs |

TPS65642 (ACTIVE) LCD Bias with Integrated Gamma Reference for Notebook PCs and Tablet PCs


Recommended alternative parts

  • TPS65642A  -  This device has an AVDD range from 7V to 10.1V (instead of 6.0 to 9.1V) Sequence: Vio & Vcore are sync (instead of Vcore after Vio)
  • TPS65640  -  This device has no integrated gamma buffer, 2 OpAmps


The TPS65642 is a compact LCD bias solution primarily intended for use in Notebook and Tablet PCs. The device comprises two boost converters to supply the LCD panel’s source driver and gate driver/level shifter; two buck converters and an LDO linear regulator to supply the system’s logic voltages; a programmable VCOM generator with two high-speed amplifiers; 14-channel gamma voltage correction; and a gate voltage shaping function.


  • 2.6 V to 6 V Input Voltage Range
  • Synchronous Boost Converter (AVDD)
  • Non-Synchronous Boost Converter with Temperature
    Compensation (VGH)
  • Synchronous Buck Converter (VCORE)
  • Synchronous Buck Converter (VIO1)
  • Low Dropout Linear Regulator (VIO2)
  • Programmable VCOM Calibrator with
    Two Integrated Buffer Amplifiers
  • Gate Voltage Shaping
  • Panel Discharge Signal (XAO)
  • System Reset Signal (RST)
  • 14-Channel, 10-Bit Programmable Gamma Voltage Correction
  • On-Chip EEPROM with Write Protect
  • I2C™ Interface
  • Thermal Shutdown
  • Supports GIP and Non-GIP Displays
  • 56-Ball, 3.16 mm × 3.45 mm 0.4 mm Pitch DSBGA


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Part number Order Display type IC integration Vin (Min) (V) Vin (Max) (V) Source driver voltage (Min) (V) Source driver voltage (Max) (V) Level shifter/scan driver (ch) Special function Topology Type Rating Package size: mm2:W x L (PKG) Package Group
TPS65642 Order now LCD Unipolar     Gamma Buffer
LCD Bias
2.6     6     6     9.1     0     Adjustable Sequencing
Gamma Buffer
Output Discharge
Reset Generator
Temperature Sensor/Compensation
        Catalog     56DSBGA: 9 mm2: 2.8 x 3.2 (DSBGA | 56)     DSBGA | 56