Reference Voltage Generator for VCOM Adjustment

Product details

Display type LCD unipolar IC integration Gamma buffer 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 Level shifter/scan driver (Ch) 0 Features I2C interface, VCOM or op amp Rating Catalog Operating temperature range (°C) to
Display type LCD unipolar IC integration Gamma buffer 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 Level shifter/scan driver (Ch) 0 Features I2C interface, VCOM or op amp Rating Catalog Operating temperature range (°C) to
TSSOP (PW) 8 19.2 mm² 3 x 6.4 VSON (DRC) 10 9 mm² 3 x 3
  • 10-BIT RESOLUTION
  • RAIL-TO-RAIL OUTPUT
  • ONBOARD NONVOLATILE MEMORY
  • IOUT: 100mA
  • LOW SUPPLY CURRENT: 900µA
  • SUPPLY VOLTAGE: 7V to 18V
  • DIGITAL SUPPLY: 2.0V to 5.5V
  • INDUSTRY-STANDARD, TWO-WIRE INTERFACE
  • HIGH ESD RATING: 2kV HBM, 500V CDM
  • APPLICATIONS
    • LCD PANEL VCOM CALIBRATION
    • LCD PANEL BRIGHTNESS AND CONTRAST CONTROL
    • POTENTIOMETER REPLACEMENT
    • MOTOR DRIVE
    • PROGRAMMABLE POWER SUPPLY
    • PROGRAMMABLE OFFSET ADJUSTMENT
    • ACTUATOR CONTROL

PowerPAD is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.

  • 10-BIT RESOLUTION
  • RAIL-TO-RAIL OUTPUT
  • ONBOARD NONVOLATILE MEMORY
  • IOUT: 100mA
  • LOW SUPPLY CURRENT: 900µA
  • SUPPLY VOLTAGE: 7V to 18V
  • DIGITAL SUPPLY: 2.0V to 5.5V
  • INDUSTRY-STANDARD, TWO-WIRE INTERFACE
  • HIGH ESD RATING: 2kV HBM, 500V CDM
  • APPLICATIONS
    • LCD PANEL VCOM CALIBRATION
    • LCD PANEL BRIGHTNESS AND CONTRAST CONTROL
    • POTENTIOMETER REPLACEMENT
    • MOTOR DRIVE
    • PROGRAMMABLE POWER SUPPLY
    • PROGRAMMABLE OFFSET ADJUSTMENT
    • ACTUATOR CONTROL

PowerPAD is a registered trademark of Texas Instruments. All other trademarks are the property of their respective owners.

The BUF01900 and BUF01901 provide a programmable voltage output with 10-bit resolution. Programming of the output occurs through an industry-standard, two-wire serial interface. Once the correct VCOM voltage is established it can easily be stored into the integrated nonvolatile memory.

An initial output voltage and adjustment range can be set by an external resistor-divider. With its large output current capability (up to 100mA), the BUF01900 and BUF01901 are ideally suited as programmable VCOM calibrators in LCD panels.

The BUF01901 has the digital-to-analog converter (DAC) output brought out directly. It has a slightly lower cost than the BUF01900, and works very well with the integrated VCOM in traditional gamma buffers such as the BUFxx702, BUFxx703, BUFxx704 and BUF11705.

The BUF01900 and BUF01901 are both available in TSSOP-8 and 3mm x 3mm DFN-10 packages. The DFN-10 package (only 0.9mm in height) is especially well-suited for notebook computers. Both devices are specified from -40°C to +85°C.

The BUF01900 and BUF01901 provide a programmable voltage output with 10-bit resolution. Programming of the output occurs through an industry-standard, two-wire serial interface. Once the correct VCOM voltage is established it can easily be stored into the integrated nonvolatile memory.

An initial output voltage and adjustment range can be set by an external resistor-divider. With its large output current capability (up to 100mA), the BUF01900 and BUF01901 are ideally suited as programmable VCOM calibrators in LCD panels.

The BUF01901 has the digital-to-analog converter (DAC) output brought out directly. It has a slightly lower cost than the BUF01900, and works very well with the integrated VCOM in traditional gamma buffers such as the BUFxx702, BUFxx703, BUFxx704 and BUF11705.

The BUF01900 and BUF01901 are both available in TSSOP-8 and 3mm x 3mm DFN-10 packages. The DFN-10 package (only 0.9mm in height) is especially well-suited for notebook computers. Both devices are specified from -40°C to +85°C.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet Programmable Voltage Source with Memory datasheet (Rev. A) 23 Oct 2006
Application note Driving Capacitive Loads with Gamma Buffers 20 Nov 2012

Design & development

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

Simulation model

Gamma Buffer I2C IBIS Model

SBOM409.ZIP (39 KB) - IBIS Model
Calculation tool

SBOC222 Resistor Divider Calculator.ZIP

Supported products & hardware

Supported products & hardware

Products
LCD & OLED display power & drivers
BUF01900 Reference Voltage Generator for VCOM Adjustment
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins Download
TSSOP (PW) 8 View options
VSON (DRC) 10 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos