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.
All trademarks are the property of their respective owners.
| Display type | LCD unipolar |
| IC integration | Gamma buffer, VCOM |
| Vin (min) (V) | 9 |
| Vin (max) (V) | 20 |
| Applications | 13 to 21 inches, 21 inches and above, 7 inches or less, 7 to 13 inches |
| Source driver voltage (min) (V) | 9 |
| Source driver voltage (max) (V) | 20 |
| Level shifter/scan driver (Ch) | 0 |
| Features | Gamma buffer, I2C interface, VCOM or op amp |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 95 |
| HTSSOP (PWP) | 20 | 41.6 mm² 6.5 x 6.4 |