6 通道 LCD 伽玛校正缓冲器 +1 Vcom
The BUFxx704 are a series of multi-channel buffers targeted towards gamma correction in high-resolution LCD panels. They are pin-compatible with the existing BUFxx702 and BUFxx703 families and operate at higher supply voltages up to 18 V 19 V absolute max. The higher supply voltage enables faster response times and brighter images in large-screen LCD panels. This is especially important in LCD TV applications.
The number of gamma correction channels required depends on a variety of factors and differs greatly from design to design. Therefore, 10, 6, and 4 channel options are offered. For additional space and cost savings, a VCOM channel with > 100mA drive capability is integrated into the BUF11704, , and BUF05704.
The BUF11704, BUF07704, BUF06704, and BUF05704 are available in the TSSOP-28, TSSOP-20, TSSOP-16, and TSSOP-14 PowerPAD packages for dramatically increased power dissipation capability. This way, a large number of channels can be handled safely in one package.
A flow-through pinout has been adopted to allow simple PCB routing and maintain the cost-effectiveness of this solution. All inputs and outputs of the BUFxx704 incorporate internal ESD protection circuits that prevent functional failures at voltages up to 8 kV HBM, 2 kV CDM, and 300 V MM.
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- Wide Supply Range: 4.5 V to 18 V
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- Gamma Correction Channels: 10, 6, and 4
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- Integrated VCOM Buffer
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- Excellent Output Current Drive:
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- Gamma Channels:
> 30 mA at 0.5 V Swing to Rails1
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- VCOM:
> 100 mA typ at 2 V Swing to Rails1
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- Large Capacitive Load Drive Capability
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- Rail-to-Rail Output
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- PowerPAD Package
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- Low-Power/Channel: < 500 µA
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- High ESD Rating: 8 kV HBM, 2 kV CDM, 300 V MM
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- Specified for 25°C to +85°C
1 See Typical Characteristic curves for details.
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