Product details


Display type LCD Unipolar IC integration Gamma Buffer, LCD Bias, VCOM Vin (Min) (V) 2.6 Vin (Max) (V) 6 Source driver voltage (Min) (V) 6 Source driver voltage (Max) (V) 9.1 Level shifter/scan driver (ch) 0 Special function Adjustable Sequencing, GPM/GVS, Gamma Buffer, I2C I/F, Output Discharge, Reset Generator, Temperature Sensor/Compensation, VCOM/OpAmp Topology Rating Catalog open-in-new Find other LCD & OLED display power & drivers

Package | Pins | Size

DSBGA (YFF) 56 DSBGA (YFF) 56 9 mm² 3.156 x 3.488 open-in-new Find other LCD & OLED display power & drivers


  • 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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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.

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Similar but not functionally equivalent to the compared device:
TPS65640 ACTIVE LCD Bias with Digital VCOM Buffer for Notebook PCs and Tablet PCs This product has no integrated gamma buffer, and has two OpAmps.
TPS65642A ACTIVE LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Moni This product has an integrated AVDD range from 7V to 10.1V (instead of 6.0 to 9.1V) and has Vio and Vcore in sync.

Technical documentation

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Type Title Date
* Datasheet LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs datasheet Jul. 19, 2013
Application notes Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Technical articles Display Power: Why TFT LCD needs Temperature Compensation Jul. 26, 2017
Application notes How to Generate a Regulated VGL Supply Using the TPS65642A Dec. 08, 2016
Application notes Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 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
Application notes Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

TPS65642 Temperature Compensation Calculations
TPS65642DESIGN-CALC — TPS65642 Temperature Compensation Calculation Tool.
SLVC684A.ZIP (122 KB)

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 56 View options

Ordering & quality

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