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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 interface, VCOM or op amp Rating Catalog open-in-new Find other LCD & OLED display power & drivers

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 open-in-new Find other LCD & OLED display power & drivers

Features

  • 10-BIT RESOLUTION
  • 8-CHANNEL P-GAMMA
  • 1-CHANNEL P-VCOM
  • HIGH SLEW RATE VCOM: 45V/µs
  • 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
  • TWO-WIRE INTERFACE: Supports 400kHz and 3.4MHz
  • APPLICATIONS
    • TFT-LCD REFERENCE DRIVERS

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Description

The BUF08832 offers eight programmable gamma channels and one programmable VCOM channel.

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 BUF08832 supports up to 16 write operations to the on-chip memory.

The BUF08832 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 a Two-Wire interface that supports standard operations up to 400kHz and high-speed data transfers up to 3.4MHz.

The BUF08832 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 BUF08832 is offered in a HTSSOP-20 PowerPAD package, and is specified from –40°C to +85°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet Programmable Gamma-Volt Generator & High Slew Rate Vcom w/ Integrated 2-Bank Mem datasheet (Rev. C) Jul. 12, 2011
User guide BUF08832EVM Users Guide (Rev. A) Aug. 03, 2016
Application note Driving Capacitive Loads with Gamma Buffers Nov. 20, 2012

Design & development

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

Hardware development

EVALUATION BOARD Download
149
Description

The BUF08832EVM key hardware consists of two boards, BUF08832 Test Board and USB DIG Platform. The BUF08832 Test Board contains the BUF08832, terminal strips for external connections, and several jumpers for device configurations. The USB DIG Platform contains an 8052 microcontroller with a built in (...)

Features
  • BUF08832 Hardware Designer's Kit
  • Evaluate BUF08832
  • Full Temperature Evaluation
  • Software Control for Designer's Kit
  • Communicate with BUF08832 for Evaluation
  • Configure and store gamma profiles for LCD panel.

Software development

SUPPORT SOFTWARE Download
SBOC303.ZIP (1744 KB)
SUPPORT SOFTWARE Download
SBOC304.ZIP (55112 KB)

Design tools & simulation

SIMULATION MODEL Download
SBOM409.ZIP (39 KB) - IBIS Model
SIMULATION TOOL 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
  • (...)
SCHEMATIC Download
SBOR008.PDF (27 KB)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 20 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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