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Texas Instruments BUF07703PWPR
- Part No.:
- BUF07703PWPR
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
BUF07703PWPR.pdf
- Description:
- IC AMP TFT-LCD 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,447
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Product details
Overview
BUF07703PWPR 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 delivers >10mA per gamma channel and >100mA (typ) on the VCOM output, operates from 4.5V to 16V, supports rail-to-rail output swing, and is specified for –40°C to +85°C industrial temperature range - deployed in LCD TV and flat-panel display source driver interfaces.
For engineers reviewing the BUF07703PWPR datasheet, BUF07703PWPR pinout, BUF07703PWPR application, or BUF07703PWPR equivalent, this page provides verified electrical specifications, HTSSOP-20 PowerPAD™ package layout guidance, gamma/VCOM channel allocation logic, capacitive load drive capability up to 10nF, and real-world substitution options validated for LCD gamma reference buffering.
Technical Context
The BUF07703PWPR integrates six matched gamma buffers (channels 1–6) and one high-current VCOM buffer in a single HTSSOP-20 PowerPAD™ package. Gamma channels 1–3 feature PMOS-input stages enabling full VDD-referenced input range, while channels 4–6 use NMOS-input stages optimized for GND-referenced operation - ensuring precise voltage follower behavior across the full gamma ladder.
Its VCOM buffer employs enhanced output stage design capable of sourcing/sinking ≥30mA with <1mV/mA load regulation, and maintains stability driving >10nF capacitive loads - critical for large-area LCD panels requiring low-noise, fast-settling common electrode biasing without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gamma channels | 6 independent high-drive buffers for LCD gamma voltage distribution |
| VCOM channel | 1 dedicated high-current output (>100mA typ) for LCD panel common electrode bias |
| Supply range | 4.5V to 16V - compatible with standard LCD panel power rails including 5V, 12V, and 15V systems |
| Rail-to-rail output | Enables full-swing gamma reference delivery: VOH ≥9.7V @ 10V supply, VOL ≤0.25V @ 10V supply |
| Capacitive load drive | Stable with ≥10nF loads - eliminates need for external isolation resistors in high-CL LCD source driver interfaces |
| Operating temperature | –40°C to +85°C - qualified for industrial and consumer display applications without derating |
| ESD rating | 4kV HBM / 1.5kV CDM - robust handling in automated assembly and field service environments |
Pinout & Package
BUF07703PWPR is housed in a 20-pin HTSSOP PowerPAD™ package (PWP), featuring thermal-enhanced copper pad on underside for improved power dissipation (θJC = 1.4°C/W). The flow-through pinout minimizes PCB trace crossovers and supports compact, noise-resilient routing for multi-channel gamma distribution.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | VDD | Primary power supply input (4.5V–16V); dual pins reduce IR drop and improve decoupling |
| 2–7 | IN1–IN6 | Gamma channel analog inputs - mapped to ladder nodes GMA1–GMA6 per application diagram |
| 8 | NC | No-connect; internal die pad not bonded - must remain unconnected on PCB |
| 9 | INCOM | VCOM reference input - accepts DC bias voltage for common electrode control |
| 10, 19 | GND | Analog ground return paths; separate pins minimize ground bounce between gamma and VCOM sections |
| 11–16 | OUT1–OUT6 | Gamma channel buffered outputs - each drives one LCD source driver gamma reference input |
| 17 | NC | No-connect; internal die pad not bonded - must remain unconnected on PCB |
| 18 | OUTCOM | VCOM buffer output - delivers high-current, low-impedance bias to LCD panel common electrode |
Key Features
| Feature | Design Value |
|---|---|
| Matched gamma channel architecture | PMOS-input (ch1–3) and NMOS-input (ch4–6) stages precisely track gamma ladder voltage distribution |
| VCOM current drive | >100mA typical sink/source capability enables direct drive of large-area LCD common electrodes |
| Capacitive load stability | Phase margin >50° with 10nF load - eliminates need for series isolation resistors in production designs |
| Low quiescent current | <250µA per channel - reduces system-level standby power in always-on display subsystems |
| Input offset voltage | ≤15mV over full temperature range - ensures gamma voltage accuracy without trimming |
Applications
| LCD Television Source Driver Interface | High-Resolution Flat Panel Display |
|---|---|
|
Use Scenario: Driving 6-point gamma reference inputs of an integrated LCD source driver IC in a 4K UHD TV panel. IC Role / Device Role / Timing Role: Voltage follower buffer for precision gamma voltage distribution and VCOM bias generation. Use Value: Eliminates gamma voltage droop and settling delay under 10nF load, enabling accurate grayscale reproduction at 120Hz refresh rates. |
Use Scenario: Providing stable gamma reference voltages and VCOM bias for a 27-inch IPS monitor with wide viewing angle requirements. IC Role / Device Role / Timing Role: Multi-channel reference buffer with integrated VCOM driver for panel uniformity control. Use Value: Delivers <1mV/mA load regulation on VCOM output, reducing vertical banding and improving luminance consistency across panel height. |
| Industrial HMI Display Module | Medical Diagnostic Monitor |
|
Use Scenario: Gamma correction in a ruggedized 10.1-inch industrial touchscreen display operating in extended temperature environments. IC Role / Device Role / Timing Role: Temperature-stable gamma buffer supporting –40°C to +85°C operation without calibration drift. Use Value: Maintains <15mV max input offset across full temperature range, preserving color fidelity in factory-floor lighting conditions. |
Use Scenario: Reference buffering for a DICOM-compliant 5MP diagnostic display requiring precise grayscale linearity per IEC 62563-1. IC Role / Device Role / Timing Role: High-accuracy, low-noise gamma voltage distributor with <45nV/√Hz input-referred noise. Use Value: Enables ≤0.5% grayscale deviation across 1024 intensity levels - meeting clinical imaging contrast fidelity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar gamma correction buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BUF06703PW | 6 gamma channels, no VCOM buffer; TSSOP-16 package; lower thermal performance (θJA = 108°C/W) | Suitable only when external VCOM driver is available; requires additional board space and BOM item | Select when VCOM is generated separately and thermal headroom permits standard TSSOP packaging |
| BUF05703PW | 4 gamma channels + 1 VCOM channel; TSSOP-14 package; reduced channel count and thermal capability | Applicable for smaller panels (e.g., 7–10 inch) with ≤4 gamma points and lower VCOM current demand | Choose for cost-sensitive, space-constrained portable displays where 4-channel gamma suffices |
Compared with BUF07703PWPR, BUF06703PW lacks integrated VCOM drive and offers inferior thermal management, while BUF05703PW reduces gamma channel count by 33% and VCOM drive margin - making BUF07703PWPR the optimal choice for full-featured 6+1 channel LCD timing in thermally demanding 12V/15V systems.
Availability
BUF07703PWPR is available at Aetrix Electronics and suitable for LCD television displays, high-resolution flat panel monitors, and industrial human-machine interface (HMI) systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for BUF07703PWPR 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 - with decades of display interface IP and high-precision buffer design expertise.
The BUFxx703 product line was engineered specifically for LCD gamma correction and VCOM biasing, addressing the need for integrated, thermally robust, multi-channel reference buffers in cost- and space-constrained display electronics.
FAQ
What is the maximum capacitive load BUF07703PWPR can drive while maintaining stability?
BUF07703PWPR is characterized for stable operation with ≥10nF capacitive loads on all gamma and VCOM outputs, achieving >50° phase margin per Figure 37 and Figure 38 in the SBOS269C datasheet. This eliminates the need for series isolation resistors in most LCD source driver applications and supports direct connection to high-CL panel interfaces without external compensation networks.
How are the input stages of BUF07703PWPR gamma channels configured to match the gamma voltage ladder?
BUF07703PWPR gamma channels 1–3 use PMOS-input stages enabling full VDD-referenced input range (1V to VDD), while channels 4–6 use NMOS-input stages optimized for GND-referenced operation (0V to VDD−1V). This architecture matches the decreasing voltage swing across the gamma ladder - ensuring minimal input offset and distortion at each reference node.
Does BUF07703PWPR require external compensation components for VCOM output stability?
No, BUF07703PWPR's VCOM buffer is internally compensated and remains stable driving ≥10nF loads without external components, as confirmed by phase shift vs. load capacitance data in Figure 37 of SBOS269C. This simplifies layout and improves reliability compared to discrete op-amp solutions requiring careful RC network tuning.
What is the load regulation performance of the VCOM output on BUF07703PWPR?
The VCOM output of BUF07703PWPR exhibits ≤1mV/mA load regulation when sinking or sourcing 1–30mA (per SBOS269C, Table "Load regulation" for VCOM buffer), ensuring minimal voltage shift during dynamic panel updates - critical for suppressing vertical banding and maintaining grayscale uniformity across large LCD panels.
Can BUF07703PWPR be used in systems with supply voltages below 5V?
No - BUF07703PWPR has a minimum recommended supply voltage of 4.5V and is not characterized or guaranteed for operation below that threshold. Its input common-mode range, output swing, and load drive capability degrade significantly below 4.5V, and the device is not rated for 3.3V or 2.5V systems. For low-voltage display interfaces, alternate solutions must be selected.
BUF07703PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- TFT-LCD Panels: Gamma Buffer, VCOM Driver
- Output Type:
- Rail-to-Rail
- Number of Circuits:
- 6
- -3db Bandwidth:
- 800 kHz
- Slew Rate:
- 1V/µs
- Current - Supply:
- 1.7 mA
- Current - Output / Channel:
- -
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 16V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-HTSSOP
BUF07703PWPR FAQ
1.How can I place an order for BUF07703PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for BUF07703PWPR 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 BUF07703PWPR reliable?
The price and inventory of BUF07703PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUF07703PWPR is usually 5 days.
3.What payment methods are accepted for BUF07703PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUF07703PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUF07703PWPR?
BUF07703PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUF07703PWPR 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 BUF07703PWPR?
For technical support, including BUF07703PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUF07703PWPR requirements.
6.How does Aetrix verify that BUF07703PWPR is sourced from the original manufacturer or authorized distributors?
All BUF07703PWPR 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 BUF07703PWPR meets industry standards.
7.What is the process for return or replacement of BUF07703PWPR?
All BUF07703PWPR units undergo pre-shipment inspection (PSI). If there is an issue with BUF07703PWPR, 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 BUF07703PWPR part is unused and in its original packaging.
Return procedure for BUF07703PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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