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Texas Instruments BUF07704AIPWPR
- Part No.:
- BUF07704AIPWPR
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
BUF07704AIPWPR.pdf
- Description:
- IC AMP TFT-LCD 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,342
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Product details
Overview
BUF07704AIPWPR from Texas Instruments is a 6-channel gamma correction buffer with integrated VCOM driver, designed for high-resolution LCD panel timing and voltage reference distribution. It operates from 4.5 V to 18 V, delivers >30 mA per gamma channel at 0.5 V swing to rails, >100 mA for VCOM, and supports rail-to-rail output in TSSOP-20 PowerPAD package - enabling fast response and brightness control in LCD TVs.
For engineers reviewing the BUF07704AIPWPR datasheet, BUF07704AIPWPR pinout, BUF07704AIPWPR application, or BUF07704AIPWPR equivalent, key selection criteria include gamma channel count (6), integrated VCOM drive capability (>100 mA), wide supply range (4.5–18 V), thermal performance in PowerPAD package, and compatibility with LCD source driver reference input networks.
Technical Context
The BUF07704AIPWPR implements a segmented input-stage architecture: gamma buffers 1–3 use NMOS-only inputs (common-mode range: 1 V to VDD), while buffers 4–6 use PMOS-only inputs (common-mode range: GND to VDD −1 V), matching typical gamma ladder voltage distribution. Its VCOM buffer features independent high-current sourcing/sinking capability (±100 mA) and enhanced capacitive load drive (>100 pF).
This architecture enables precise voltage referencing across large-panel LCDs without external compensation, with rail-to-rail output swing (e.g., VOH ≥17.85 V at 10 mA for buffers 1–3; VOL ≤0.15 V for buffers 4–6), low input offset voltage (≤30 mV), and high PSRR (≥60 dB) over 4.5–19 V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gamma channels | 6 independent high-drive buffers for gamma reference voltage distribution |
| VCOM channel | 1 integrated high-current buffer (±100 mA) for LCD panel common electrode drive |
| Supply voltage | 4.5 V to 18 V - supports high-brightness operation in large-screen LCD TVs |
| Output current | Gamma: >30 mA at 0.5 V swing to rails; VCOM: >100 mA typ at 2 V swing to rails |
| Operating temperature | −25°C to +85°C - qualified for industrial and consumer display environments |
| ESD rating | 8 kV HBM, 2 kV CDM, 300 V MM - ensures robustness during PCB assembly and field operation |
| Package | TSSOP-20 PowerPAD - thermally enhanced for high-power-density LCD timing applications |
Pinout & Package
TSSOP-20 PowerPAD package with exposed thermal pad on underside; requires soldering to PCB copper area for thermal and mechanical integrity. Pin 1 = VDD, Pin 20 = GND; PowerPAD must be connected to most negative supply (GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 11 | VDD | Primary power supply input (4.5–18 V); dual VDD pins reduce IR drop and improve PSRR |
| 2, 10, 19 | OUT1–OUT6 | Gamma buffer outputs; OUT1–OUT3 (NMOS-input stage), OUT4–OUT6 (PMOS-input stage) |
| 3, 9, 18 | IN1–IN6 | Gamma buffer inputs; matched to resistor-ladder gamma reference nodes |
| 4, 17 | OUTCOM | VCOM buffer output; drives LCD panel common electrode with ±100 mA capability |
| 5, 16 | INCOM | VCOM buffer input; accepts VCOM reference voltage from timing controller or DAC |
| 6, 15 | GND | Signal and power ground; connects to PowerPAD thermal pad |
| 7, 8, 12, 13 | NC | No internal connection - unused pins for flow-through routing and layout simplification |
Key Features
| Feature | Design Value |
|---|---|
| Segmented input architecture | Buffers 1–3 and 4–6 use complementary NMOS/PMOS input stages to match gamma ladder voltage distribution - eliminates need for level-shifting circuitry |
| Rail-to-rail output swing | VOH ≥17.85 V / VOL ≤0.15 V at 10 mA load - ensures full dynamic range utilization across 18 V supply |
| High capacitive load drive | Stable operation with >100 pF output capacitance - supports local decoupling caps for transient load regulation in LCD source drivers |
| Low quiescent current | <500 µA per channel - reduces system-level power consumption in always-on display subsystems |
| Flow-through pinout | Input-output alignment across package edges - minimizes trace length and crosstalk in high-density LCD timing PCB layouts |
Applications
| LCD TV Gamma Reference Distribution | Large-Format Monitor Timing Subsystem |
|---|---|
Use Scenario: Driving 6-point gamma correction reference inputs of a 1080p LCD TV source driver IC using a resistor ladder network. IC Role / Device Role / Timing Role: High-current, low-offset buffer that forces precise gamma voltages onto source driver reference pins under varying capacitive loads. Use Value: Enables accurate grayscale reproduction and consistent brightness across screen by maintaining <30 mV input offset and >30 mA drive per channel. | Use Scenario: Providing stable gamma and VCOM references for a 24-inch commercial monitor with dual-domain IPS panel. IC Role / Device Role / Timing Role: Dual-role buffer delivering both gamma correction voltages and high-current VCOM bias to minimize flicker and improve contrast ratio. Use Value: Integrated VCOM channel eliminates discrete op-amp, reducing BOM count and PCB area while delivering >100 mA at <5 mV/mA load regulation. |
| Industrial HMI Display Interface | Medical Diagnostic Monitor Reference Chain |
Use Scenario: Buffering gamma references in an outdoor-rated industrial HMI with extended temperature operation (−25°C to +85°C). IC Role / Device Role / Timing Role: Robust, ESD-hardened buffer ensuring reliable gamma voltage delivery despite harsh EMC and thermal cycling conditions. Use Value: 8 kV HBM ESD rating and guaranteed operation over full industrial temp range prevent field failures in uncontrolled environments. | Use Scenario: Generating calibrated gamma and VCOM references for a 5MP diagnostic-grade medical LCD used in radiology workstations. IC Role / Device Role / Timing Role: Precision reference buffer with low input offset (<30 mV) and tight output voltage accuracy (VOH/VOL tolerance ±0.15 V) for clinical image fidelity. Use Value: Maintains DICOM GSDF compliance by minimizing gamma curve deviation across operating conditions and panel lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gamma correction buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BUF11704AIPWPR | 10 gamma + 1 VCOM channel; TSSOP-28 PowerPAD; higher channel count and thermal dissipation (3.58 W) | Suitable for 4K UHD panels requiring >6 gamma points; larger footprint and higher cost | Select when panel design mandates ≥10 gamma reference points or higher total power handling |
| BUF05704AIPWPR | 4 gamma + 1 VCOM channel; TSSOP-14 PowerPAD; lower pin count and thermal rating (2.67 W) | Targeted at HD-ready or smaller panels (≤19″) with reduced gamma complexity | Select when BOM cost and board space are critical and 4-channel gamma suffices |
Compared with BUF11704AIPWPR and BUF05704AIPWPR, BUF07704AIPWPR offers optimal balance of channel count (6), VCOM integration, thermal capability (3.06 W), and TSSOP-20 footprint - making it the preferred choice for mainstream Full HD LCD TVs and monitors where 6-point gamma correction is standard.
Availability
BUF07704AIPWPR is available at Aetrix Electronics and suitable for LCD TV manufacturing, industrial HMI production, and medical display development requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for BUF07704AIPWPR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal technologies for industrial, automotive, and consumer applications.
The BUFxx704 product line was developed specifically to address the high-voltage, multi-channel gamma correction and VCOM drive requirements of modern TFT-LCD panels - enabling brighter, faster, and more energy-efficient displays.
FAQ
What is the maximum supply voltage for BUF07704AIPWPR?
The absolute maximum supply voltage for BUF07704AIPWPR is 19 V, with recommended operation up to 18 V. Operating within this range ensures reliable gamma and VCOM buffer performance while maintaining specified output drive, PSRR, and thermal limits. Exceeding 19 V risks permanent damage per the absolute maximum ratings table in the SBOS277F datasheet.
Does BUF07704AIPWPR require external compensation for stability?
No, BUF07704AIPWPR is internally compensated and stable driving capacitive loads ≥100 pF without external components. Its output stage is optimized for direct connection to LCD source driver reference inputs and local decoupling capacitors, eliminating the need for external compensation networks in standard gamma correction applications.
How are the gamma buffer inputs configured for different voltage ranges?
BUF07704AIPWPR uses a segmented input architecture: buffers 1–3 accept inputs from 1 V to VDD (NMOS-input stage), while buffers 4–6 accept inputs from GND to VDD −1 V (PMOS-input stage). This matches the typical gamma ladder voltage distribution - buffer 1 connects to the highest gamma voltage near VDD, buffer 6 to the lowest near GND - ensuring optimal common-mode rejection and linearity.
Can BUF07704AIPWPR drive multiple LCD panels simultaneously?
No, BUF07704AIPWPR is designed to drive one LCD panel's gamma and VCOM reference network. Its output drive capability (30 mA/channel, 100 mA VCOM) targets single-panel systems. For multi-panel architectures, separate BUF07704AIPWPR devices or higher-channel variants like BUF11704AIPWPR are required to maintain voltage accuracy and transient response.
What is the thermal pad connection requirement for BUF07704AIPWPR?
The PowerPAD thermal pad of BUF07704AIPWPR must be soldered to a PCB copper area connected to GND. TI specifies a 2×4 thermal via pattern (13-mil diameter) under the pad, with vias connected to an internal ground plane. This connection is mandatory - not optional - to achieve rated power dissipation (3.06 W) and junction temperature control.
BUF07704AIPWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- TFT-LCD Panels: Gamma Buffer, VCOM Driver
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 6
- -3db Bandwidth:
- 1 MHz
- Slew Rate:
- 1.6V/µs
- Current - Supply:
- 5 mA
- Current - Output / Channel:
- -
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 18V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-HTSSOP
BUF07704AIPWPR FAQ
1.How can I place an order for BUF07704AIPWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for BUF07704AIPWPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BUF07704AIPWPR reliable?
The price and inventory of BUF07704AIPWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUF07704AIPWPR is usually 5 days.
3.What payment methods are accepted for BUF07704AIPWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUF07704AIPWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUF07704AIPWPR?
BUF07704AIPWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUF07704AIPWPR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BUF07704AIPWPR?
For technical support, including BUF07704AIPWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUF07704AIPWPR requirements.
6.How does Aetrix verify that BUF07704AIPWPR is sourced from the original manufacturer or authorized distributors?
All BUF07704AIPWPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BUF07704AIPWPR meets industry standards.
7.What is the process for return or replacement of BUF07704AIPWPR?
All BUF07704AIPWPR units undergo pre-shipment inspection (PSI). If there is an issue with BUF07704AIPWPR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BUF07704AIPWPR part is unused and in its original packaging.
Return procedure for BUF07704AIPWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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