BUF07702PWP

Video Amps And Modules Overview

The BUF07702PWP is a Texas Instruments LCD gamma buffer featuring six dedicated gamma correction channels and one integrated VCOM buffer. It operates within a supply voltage range of 4.5V to 16V and supports an operating temperature from 0°C to 85°C. The device utilizes a TSSOP-20 PowerPAD package for enhanced thermal dissipation. Key electrical characteristics include a typical input offset voltage of 12mV, a supply current of 3.7mA, and a slew rate of 1V/µs for gamma channels. It provides rail-to-rail output swing capability with high drive strength.

Video Amps And Modules Feature Summary

• Integrates six gamma correction channels alongside a dedicated VCOM buffer for comprehensive LCD panel driving.
• Features optimized input stages where buffers 1-5 include VDD while buffers 6-6 include GND for precise voltage matching.
• Designed with large capacitive load drive capability to maintain stability with external compensation capacitors.
• Incorporates internal ESD protection circuits rated up to 4kV (HBM) to prevent functional failures.

Video Amps And Modules Applications

• Buffering reference voltages generated by resistor ladders for LCD source drivers.
• Driving the VCOM node on LCD panels requiring significant current drive.
• Providing gamma correction signals in TFT-LCD display systems.
• Creating expanded gamma channel configurations by connecting multiple devices in parallel.

Video Amps And Modules Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm that the specific ordering suffix matches the required transport media and quantity format. Ensure compliance with RoHS directives as indicated in the official documentation. Check for any end-of-life notifications or design-in recommendations regarding newer pin-compatible alternatives.

Video Amps And Modules Selection Notes

Select this component for applications requiring six distinct gamma correction references plus a common voltage buffer. Consider the specialized input stage architecture when mapping gamma voltages to ensure optimal output swing performance. Evaluate the PowerPAD package requirements for adequate thermal management during operation. Verify that the supply voltage and temperature ranges align with the system environment.

Video Amps And Modules Part Context

This device belongs to the BUFxx702 series of LCD gamma buffers manufactured by Texas Instruments. It is designed specifically for driving LCD source drivers with varying numbers of gamma channels. The series includes variants like the BUF11702 for ten channels. The BUF07702 offers a compact solution for mid-range display applications requiring efficient gamma correction signal buffering.

Video Amps And Modules Replacement Considerations

The datasheet recommends the pin-compatible BUF07703 for new designs instead of the BUF07702. Engineers should evaluate the BUF07703 as a direct replacement to ensure continued support and availability. Verify pinout compatibility before substituting to avoid PCB redesign requirements.

Video Amps And Modules FAQ

How should the gamma buffers be connected to the resistor ladder?

Connect Buffer 1 to the gamma voltage closest to VDD, Buffers 2 through 5 to subsequent voltages, and Buffer 6 to the voltage closest to GND. This matches the specific input stage capabilities of each buffer group.

What is the recommended approach for driving large capacitive loads?

Place capacitors at the outputs of the reference buffers, typically varying from 100pF and more. This improves transient load regulation and allows the device to drive capacitances exceeding 100pF while retaining effective phase margins above 50 degrees.