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Texas Instruments TLC69650QPWPRQ1
- Part No.:
- TLC69650QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69650QPWPRQ1.pdf
- Description:
- AUTOMOTIVE 8-SCAN MOSFET CONTROL
- Quantity:
- Payment:
- Shipping:
Inventory:2,365
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Product details
Overview
TLC69650QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive scan MOSFET controller designed for local dimming backlight systems, supporting up to 1024 cascaded devices, delivering 30mA channel current at 50V drain-source voltage, and operating from 3V to 5.5V VCC - deployed in central infotainment displays requiring precise LED current control and ghost-cancellation.
For engineers reviewing the TLC69650QPWPRQ1 datasheet, TLC69650QPWPRQ1 pinout, TLC69650QPWPRQ1 application, or TLC69650QPWPRQ1 equivalent, this page delivers verified technical context, validated package mapping, confirmed daisy-chain interface specs (20MHz, 1.8V/3.3V I/O), thermal shutdown diagnostics, and real-world automotive display use cases - all grounded in TI's production-grade SNVSCK9 documentation.
Technical Context
The TLC69650QPWPRQ1 implements a time-multiplexed scan architecture compatible with TLC696x2/4/8-Q1 current-sink drivers, integrating 16 constant-current sinks per device to control up to 8 scan MOSFETs. It features adaptive headroom voltage control that directly regulates DC/DC via a single FB pin from the last device in the chain.
Diagnostics include LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD), with two programmable readback options: UART + INT pin or two-wire CLK_O/SOUT. Ghost-cancellation logic eliminates upside ghosting in high-contrast LCD backlight sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - supports direct integration with common automotive 3.3V/5V supply rails without level-shifting. |
| Channel Current / Voltage | 30mA / 50V - enables driving high-voltage LED strings in automotive HUD and cluster displays. |
| Daisy Chain Data Rate | Up to 20MHz - ensures sub-millisecond brightness update latency across large cascaded arrays. |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for under-hood and dashboard-mounted display electronics. |
| ESD Rating | HBM Level 2, CDM Level C4B - meets automotive board-level ESD robustness requirements. |
| Diagnostic Outputs | UART + INT pin OR CLK_O/SOUT - provides flexible fault reporting without requiring additional MCU GPIOs. |
| Thermal Protection | Integrated thermal shutdown detection - prevents latch-up during sustained high-power operation. |
Pinout & Package
HTSSOP-28 (PWP) package with PowerPAD thermal pad; 9.7mm × 4.4mm body size, 1.2mm max height, wettable flank option available; RoHS-compliant NIPDAU lead finish, MSL Level-3 (260°C, 168hr).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail for internal logic and gate drivers; decoupling required near pin. |
| GND | Ground reference | Common return for analog/digital circuits and thermal pad connection point. |
| CLK_I | Clock input | Accepts master clock signal for synchronous daisy-chain data transfer. |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller. |
| SOUT | Serial data output | Drives downstream device in cascade; supports diagnostic readback in two-wire mode. |
| CLK_O | Clock output | Propagates synchronized clock to next device; used with SOUT for diagnostic reporting. |
| FB | Feedback input | Connects only from final device in chain to DC/DC converter for adaptive headroom control. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events to host MCU. |
Key Features
| Feature | Design Value |
|---|---|
| Full-array local dimming topology | Supports up to 1024 cascaded controllers - enables fine-grained dimming zones in large-format automotive displays. |
| Ghost-cancellation function | Eliminates visual artifacts (upside ghosting) during rapid scan transitions - critical for high-refresh-rate HUDs. |
| Adaptive headroom voltage control | Reduces power loss by dynamically adjusting DC/DC output based on LED string forward voltage - improves system efficiency. |
| Programmable interface drive strength | Minimizes EMI in noisy automotive environments by tuning edge rates on CLK_I/SIN/SOUT lines. |
| Minimum brightness update latency | Enables black insertion and variable refresh rate (VRR) support - enhances motion clarity in video content. |
Applications
| Automotive Central Infotainment Display | Automotive Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel with 256+ local dimming zones for glare reduction and contrast enhancement in daylight. IC Role / Device Role / Timing Role: Scan MOSFET controller managing P-channel MOSFET gates to enable time-multiplexed LED current switching. Use Value: Delivers 30mA per channel at 50V, enabling compact, thermally efficient backlight driver design with minimal external components. |
Use Scenario: Digital instrument cluster requiring flicker-free, low-latency brightness updates during speedometer sweeps and warning alerts. IC Role / Device Role / Timing Role: Local dimming sequencer synchronizing with display frame timing to suppress motion blur and ghosting. Use Value: Sub-millisecond update latency and built-in black insertion ensure crisp, artifact-free rendering of dynamic gauge graphics. |
| Automotive Head-Up Display (HUD) | Advanced Driver Assistance System (ADAS) Display Overlay |
Use Scenario: Projection-based HUD with high-brightness LED array demanding precise current matching and thermal stability. IC Role / Device Role / Timing Role: Fault-tolerant scan controller providing LOD/LSD/TSD diagnostics and UART-based error logging. Use Value: AEC-Q100 Grade 1 qualification and integrated thermal shutdown ensure reliable operation in high-ambient-temperature cabin environments. |
Use Scenario: Safety-critical overlay display showing ADAS warnings (e.g., lane departure, forward collision) atop primary instrument view. IC Role / Device Role / Timing Role: Functional safety-capable controller with documented diagnostic coverage for ISO 26262 ASIL-B system integration. Use Value: Programmable readback and deterministic fault reporting support diagnostic coverage analysis and system-level safety validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar scan MOSFET controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69660QPWPRQ1 | 60mA/50V channel rating vs. 30mA/50V - higher current capability per channel. | Preferred where higher LED string current or longer trace lengths demand greater drive margin. | Select when system requires >30mA per channel without parallel device stacking. |
| TLC69650QRTWRQ1 | Same electrical specs but WQFN-24 (4mm × 4mm) package - smaller footprint, no exposed thermal pad on sides. | Better suited for space-constrained PCB layouts where HTSSOP thermal pad mounting is impractical. | Choose for compact designs needing same performance in wettable-flank QFN form factor. |
Compared with TLC69650QPWPRQ1, TLC69660QPWPRQ1 offers higher channel current headroom for demanding LED loads, while TLC69650QRTWRQ1 provides identical functionality in a smaller, thermally optimized WQFN package - both require layout revision but no firmware changes.
Availability
TLC69650QPWPRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and head-up displays requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TLC69650QPWPRQ1 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 automotive-grade ICs, with over 90 years of innovation in power management and signal chain technologies.
The TLC696x0-Q1 product line was engineered specifically for automotive LCD local dimming systems, emphasizing functional safety readiness, thermal resilience, and scalable daisy-chain architecture for multi-zone backlight control.
FAQ
What is the maximum number of TLC69650QPWPRQ1 devices that can be cascaded in a daisy chain?
The TLC69650QPWPRQ1 supports up to 1024 devices in a single daisy chain, enabling large-scale local dimming arrays for panoramic automotive displays. This scalability is achieved through its high-speed 20MHz serial interface and dedicated CLK_O/SOUT signaling path, with timing budgets preserved across full chains per TI's SNVSCK9 specification.
Does TLC69650QPWPRQ1 support both UART and two-wire diagnostic readback simultaneously?
No - the TLC69650QPWPRQ1 supports UART + INT pin OR CLK_O/SOUT for diagnostics, selected via configuration register. Both modes report LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD), but cannot operate concurrently; the choice depends on MCU interface availability and system-level noise constraints.
What is the purpose of the FB pin on TLC69650QPWPRQ1, and how should it be connected?
The FB pin on TLC69650QPWPRQ1 is used exclusively for adaptive headroom voltage control - only the FB pin of the last device in the daisy chain must be connected to the DC/DC converter feedback node. This simplifies layout and ensures optimal efficiency by regulating output voltage precisely to the highest-forward-voltage LED string in the chain.
How does the ghost-cancellation function in TLC69650QPWPRQ1 improve display quality?
The ghost-cancellation function in TLC69650QPWPRQ1 eliminates visual artifacts known as "upside ghosting" that occur during rapid scan transitions in time-multiplexed local dimming. It achieves this by precisely timing gate drive signals and compensating for residual charge in MOSFET channels - directly enhancing contrast and motion clarity in automotive HUDs and clusters.
Is TLC69650QPWPRQ1 pin-compatible with other members of the TLC696x0-Q1 family?
Yes - TLC69650QPWPRQ1 shares identical HTSSOP-28 (PWP) pinout and footprint with TLC69600QPWPRQ1, TLC69610QPWPRQ1, and TLC69660QPWPRQ1, enabling drop-in replacement within the same package variant. Electrical differences (e.g., 30mA vs. 60mA channel current) require validation of LED load and thermal design, but no PCB change is needed.
TLC69650QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- -
- Internal Switch(s):
- No
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 50V
- Current - Output / Channel:
- 30mA
- Frequency:
- -
- Dimming:
- Yes
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TLC69650QPWPRQ1 FAQ
1.How can I place an order for TLC69650QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69650QPWPRQ1 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 TLC69650QPWPRQ1 reliable?
The price and inventory of TLC69650QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69650QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69650QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69650QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69650QPWPRQ1?
TLC69650QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69650QPWPRQ1 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 TLC69650QPWPRQ1?
For technical support, including TLC69650QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69650QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69650QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69650QPWPRQ1 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 TLC69650QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69650QPWPRQ1?
All TLC69650QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69650QPWPRQ1, 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 TLC69650QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69650QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69650QPWPRQ1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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