Product
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BUF20800-Q1
  • BUF20800-Q1
  • BUF20800-Q1

BUF20800-Q1

ACTIVE

Automotive, 18-CH Gamma Voltage Generator with Two Programmable VCOM Channels

Texas Instruments BUF20800-Q1 Product Info

1 April 2026 3

Parameters

Display type

Automotive, LCD bipolar, LCD unipolar

IC integration

Gamma buffer, VCOM

Vin (min) (V)

7

Vin (max) (V)

18

Applications

13 to 21 inches, 21 inches and above, 7 inches or less, 7 to 13 inches

Source driver voltage (min) (V)

7

Source driver voltage (max) (V)

18

Level shifter/scan driver (Ch)

0

Features

Gamma buffer, I2C interface, VCOM or op amp

Rating

Automotive

Operating temperature range (°C)

-40 to 105

Package

HTSSOP (DCP)-38-62.08 mm² 9.7 x 6.4

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4
  • Low Supply Current: 900 µA/ch
  • Analog Supply Voltage: 7 V to 18 V
  • Digital Supply Voltage: 2 V to 5.5 V
  • 18-Channel Gamma Correction
  • 2-Channel Programmable VCOM: 50 mA IOUT
  • 10-Bit Resolution
  • Rail-to-Rail Output
  • I2C Interface
    • 3.4 MHz High-Speed Mode
  • Demo Board and Software Available
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4
  • Low Supply Current: 900 µA/ch
  • Analog Supply Voltage: 7 V to 18 V
  • Digital Supply Voltage: 2 V to 5.5 V
  • 18-Channel Gamma Correction
  • 2-Channel Programmable VCOM: 50 mA IOUT
  • 10-Bit Resolution
  • Rail-to-Rail Output
  • I2C Interface
    • 3.4 MHz High-Speed Mode
  • Demo Board and Software Available

Description

The BUF20800-Q1 is a programmable voltage reference generator designed for gamma correction in TFT-LCD panels. It provides 18 programmable outputs for gamma correction and two channels for VCOM adjustment, each with 10-bit resolution.

All channels are programmable using an I2C interface that supports high-speed data transfers up to 3.4 MHz.
This programmability replaces the traditional, time consuming process of changing resistor values to optimize the various gamma voltages and allows designers to determine the correct gamma voltages for a panel very quickly. Required changes are easily implemented without hardware changes.

The BUF20800-Q1 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation.

For lower channel count, please contact your local sales or marketing representative.

The BUF20800-Q1 is available in an HTSSOP-38 package withPowerPAD™. It is specified from −40°C to +105°C.

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