Top

Product details

Parameters

Display type LCD Unipolar IC integration Gamma Buffer, VCOM Vin (Min) (V) 9 Vin (Max) (V) 20 Source driver voltage (Min) (V) 9 Source driver voltage (Max) (V) 20 Level shifter/scan driver (ch) 0 Special function Gamma Buffer, I2C I/F, VCOM/OpAmp Topology Rating Catalog open-in-new Find other LCD & OLED display power & drivers

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 4.4 x 9.7 open-in-new Find other LCD & OLED display power & drivers

Features

  • 10-BIT RESOLUTION
  • 16-CHANNEL P-GAMMA
  • 2-CHANNEL P-VCOM
  • 16x REWRITABLE NONVOLATILE MEMORY
  • TWO INDEPENDENT PIN-SELECTABLE MEMORY BANKS
  • RAIL-TO-RAIL OUTPUT
    • 300mV Min Swing-to-Rail (10mA)
    • > 300mA Max IOUT
  • LOW SUPPLY CURRENT
  • SUPPLY VOLTAGE: 9V to 20V
  • DIGITAL SUPPLY: 2V to 5.5V
  • I2C™ INTERFACE: Supports 400kHz and 3.4MHz
  • APPLICATIONS
    • TFT-LCD REFERENCE DRIVERS

PowerPAD is a trademark of Texas Instruments.
I2C is a trademark of NXP Semiconductors.
All other trademarks are the property of their respective owners.

open-in-new Find other LCD & OLED display power & drivers

Description

The BUF16821 offers 16 programmable gamma channels and two programmable VCOM channels.

The final gamma and VCOM values can be stored in the on-chip, nonvolatile memory. To allow for programming errors or liquid crystal display (LCD) panel rework, the BUF16821 supports up to 16 write operations to the on-chip memory.

The BUF16821 has two separate memory banks, allowing simultaneous storage of two different gamma curves to facilitate switching between gamma curves.

All gamma and VCOM channels offer a rail-to-rail output that typically swings to within 150mV of either supply rail with a 10mA load. All channels are programmed using an I2C interface that supports standard operations up to 400kHz and high-speed data transfers up to 3.4MHz.

The BUF16821 is manufactured using Texas Instruments' proprietary, state-of-the-art, high-voltage CMOS process. This process offers very dense logic and high supply voltage operation of up to 20V. The BUF16821 is offered in a HTSSOP-28 PowerPAD™ package, and is specified from -40°C to +85°C.

open-in-new Find other LCD & OLED display power & drivers
Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet Programmable Gamma-Volt Generator & Vcom Calibrator w/Integrated 2-Bank Memory datasheet (Rev. C) Jul. 12, 2011
User guides BUF16821EVM-USB User Guide (Rev. A) May 31, 2016
Technical articles Automotive electronics design made easy Jul. 18, 2013
Technical articles John discusses benefits of LEDs in automobiles Jul. 16, 2013
Application notes Driving Capacitive Loads with Gamma Buffers Nov. 20, 2012
User guides BUF16821EVM Evaluation Board and Software Tutorial Feb. 27, 2008

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
149
Description

The BUF16821EVM-USB is a platform for evaluating the performance of the BUF16821 under various signal, reference, and supply conditions.

Features
  • Easy to use hardware and software.
  • DUT socket allows screening/programming of many parts
  • DIP Adapter/Daughter board for thermal evaluation
  • External connections for stand alone applications

Software development

SUPPORT SOFTWARE Download
SBOC255.ZIP (2960 KB)
SUPPORT SOFTWARE Download
SBOC405.ZIP (89710 KB)
SUPPORT SOFTWARE Download
SBOC406.ZIP (1821 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOM409.ZIP (39 KB) - IBIS Model
SIMULATION MODELS Download
SBOMB83.ZIP (43 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 28 View options

Ordering & quality

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

Related videos