BUF16821-Q1 Texas instruments

BUF16821-Q1

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BUF16821-Q1

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Описание

The BUF16821-Q1 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 device supports up to 16 write operations to the on-chip memory. The device 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 150 mV of either supply rail with a 10-mA load. All channels are programmed using an I2C interface that supports standard operations up to 400 kHz and high-speed data transfers up to 2.7 MHz. The device 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 20 V. The device is offered in an HTSSOP-28 PowerPAD package, and is specified from –40°C to +85°C.

AEC-Q100 Qualified with:
- Temperature Grade 3: –40°C to 85°C
- HBM ESD Classification 2
- CDM ESD Classification C4B
16-Channel P-Gamma, 2-Channel P-VCOM, 10-Bit Resolution
16x Rewritable Nonvolatile Memory
Two Independent Pin-Selectable Memory Banks
Rail-to-Rail Output:
- 300-mV (Min) Swing-to-Rail (10 mA)
- > 300-mA (Max) I_OUT
Supply Voltage: 9 V to 20 V
Digital Supply: 2 V to 5.5 V
I²C™ Interface: Supports 400 kHz and 2.7 MHz

Application

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.

Display type	Automotive, 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	Automotive
Operating temperature range (°C)	-40 to 85