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Texas Instruments TLC69664QRTWRQ1
- Part No.:
- TLC69664QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69664QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 64 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:2,805
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Product details
Overview
TLC69664QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC for local dimming backlight systems, integrating 16 constant-current sinks with 60mA/50V output capability, ±2% channel-to-channel current matching, and 15-bit brightness resolution. It supports 4-time-multiplexing control in daisy-chained configurations for LCD displays in safety-critical vehicle applications.
For engineers reviewing the TLC69664QRTWRQ1 datasheet, TLC69664QRTWRQ1 pinout, TLC69664QRTWRQ1 application, or TLC69664QRTWRQ1 equivalent, key selection criteria include its adaptive headroom voltage control (AHVC), UART/interrupt and two-wire (CLK_O/SOUT) diagnostic reporting, and wettable-flank WQFN-24 package optimized for automotive thermal and reliability requirements.
Technical Context
The TLC69664QRTWRQ1 implements time-multiplexed local dimming by driving 16 LED zones per device in a 4× multiplexing configuration, synchronized via high-speed daisy-chain interface (up to 20MHz) compatible with 1.8V/3.3V logic. Its AHVC scheme dynamically adjusts VLED headroom by regulating external DC/DC feedback only at the last device's FB pin.
Diagnostics include per-zone LED open/short detection (LOD/LSD) and thermal shutdown (TSD), with readback supported through programmable UART/INT or CLK_O/SOUT outputs. The device operates from 3V–5.5V VCC and achieves ultra-low power consumption: ≤200μA in standby and ≤3.5mA in normal mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 constant-current sinks for independent LED zone control |
| Max Output Current / Voltage | 60mA per channel into up to 50V load - enables high-brightness, high-Vf LED strings |
| Current Matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across dimming zones |
| Brightness Resolution | Up to 15-bit PWM/hybrid dimming - supports fine-grained contrast and black-level control |
| Daisy-Chain Speed | Up to 20MHz serial data rate - minimizes frame update latency for fast-refresh displays |
| Supply Voltage Range | 3V to 5.5V VCC - compatible with standard automotive 3.3V/5V rails |
| Diagnostic Reporting | UART + INT or CLK_O + SOUT options - flexible integration with host microcontroller or display controller |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, wettable flank, 0.8mm max height, exposed thermal pad. RoHS-compliant, NIPDAU lead finish, MSL Level-1 (unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for internal logic and gate drivers |
| GND | Ground reference | Common return for power, analog, and digital sections |
| CLK_I | Serial clock input | Master-synchronized timing signal for daisy-chain data latching |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host |
| SOUT | Serial data output | Transmits readback diagnostics or cascaded data to downstream device |
| CLK_O | Serial clock output | Drives clock for next device in daisy chain; enables synchronous multi-device operation |
| FB | DC/DC feedback input | Only used on final device in chain to regulate VLED headroom via external DC/DC converter |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events |
| OUT0–OUT15 | Constant-current sink outputs | 16 high-side referenced current sources driving LED cathodes to GND |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ESD Level 2 and CDM Level C4B |
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically minimizing VLED overhead - improves system efficiency and thermal performance |
| Programmable interface drive strength | Adjusts CLK_I/SIN output slew to suppress EMI in noisy automotive environments |
| Integrated 4-phase shifting | Staggers switching edges across channels to lower peak current demand and reduce conducted EMI |
| Black insertion & VRR support | Enables motion blur reduction and variable refresh rate synchronization for premium display quality |
Applications
| Automotive Central Infotainment Display | Automotive Digital Instrument Cluster |
|---|---|
Use Scenario: High-resolution LCD panel in center console requiring dynamic local dimming for HDR content and sunlight readability. IC Role / Device Role / Timing Role: Primary local dimming controller managing 16 LED zones per TLC69664QRTWRQ1, daisy-chained to scale beyond 1000 zones. Use Value: Enables >10,000:1 contrast ratio and precise luminance control while maintaining <100μs brightness update latency. | Use Scenario: Driver-facing TFT-LCD cluster with safety-critical warning indicators needing consistent brightness and fault resilience. IC Role / Device Role / Timing Role: Fault-aware LED driver providing real-time LOD/LSD/TSD diagnostics via UART to MCU for ASIL-B compliant monitoring. Use Value: Guarantees fail-safe dimming behavior and immediate thermal shutdown before junction temperature exceeds 150°C. |
| Automotive Head-Up Display (HUD) | Advanced Driver Assistance Systems (ADAS) Display |
Use Scenario: Compact HUD projector module requiring minimal board space and low thermal footprint. IC Role / Device Role / Timing Role: Space-optimized WQFN-24 LED driver delivering 60mA per channel with integrated thermal pad for passive cooling. Use Value: Achieves 50V compliance for high-efficiency blue/purple LED stacks while maintaining <1.2mm profile. | Use Scenario: ADAS camera feed overlay display with variable refresh rate (VRR) and motion-adaptive dimming. IC Role / Device Role / Timing Role: Local dimming engine supporting VRR synchronization and black insertion for flicker-free object tracking visuals. Use Value: Reduces motion blur by 40% versus fixed-refresh implementations without adding processing latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69664QPWPRQ1 | Same electrical specs but HTSSOP-28 package (9.7mm × 4.4mm); higher MSL level (Level-3); no wettable flanks | Preferred where manual optical inspection of solder joints is required or board layout allows larger footprint | Select when legacy HTSSOP assembly processes or thermal pad accessibility for rework are priorities |
| TLC69662QRTWRQ1 | Identical WQFN-24 package and pinout, but rated for 60mA/20V output - lower VLED headroom tolerance | Suitable for low-Vf LED arrays (e.g., red/green) where 50V compliance is unnecessary | Choose for cost-sensitive designs using <20V LED strings without sacrificing thermal or EMI advantages of RTW package |
Compared with TLC69664QPWPRQ1, the TLC69664QRTWRQ1 offers superior manufacturability via wettable flanks and unlimited reflow rating, while TLC69662QRTWRQ1 trades maximum output voltage for marginally lower BOM cost - both retain identical control architecture and diagnostic features.
Availability
TLC69664QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and head-up displays requiring stable component supply under AEC-Q100 Grade 1 conditions.
Supply support for TLC69664QRTWRQ1 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 decades of automotive qualification expertise and functional safety documentation support.
The TLC696x-Q1 product line delivers scalable, daisy-chainable LED drivers for automotive LCD local dimming - engineered specifically for ASIL-B–capable systems demanding precision current matching, robust diagnostics, and thermal resilience.
FAQ
What is the maximum LED string voltage supported by the TLC69664QRTWRQ1?
The TLC69664QRTWRQ1 supports up to 50V at each of its 16 constant-current sink outputs, enabling direct drive of high-forward-voltage LED strings common in automotive RGB and white LED backlighting. This 50V rating is confirmed in the official datasheet's "Maximum Output Current / Voltage" specification for the TLC6966x-Q1 family variant and applies specifically to the TLC69664QRTWRQ1 part number.
Does the TLC69664QRTWRQ1 support daisy-chaining with other TLC696x-Q1 devices?
Yes, the TLC69664QRTWRQ1 supports high-speed daisy-chaining via dedicated CLK_I, SIN, SOUT, and CLK_O pins, allowing up to 1024 devices in series for over 32,000 local dimming zones. Its 20MHz interface speed and built-in phase-shifting ensure deterministic timing and low EMI - a core architectural feature validated across the entire TLC696x2/4/8-Q1 family including the TLC69664QRTWRQ1.
How does the adaptive headroom voltage control (AHVC) function in the TLC69664QRTWRQ1?
The TLC69664QRTWRQ1 implements AHVC by monitoring LED current and dynamically adjusting the VLED supply voltage via the FB pin - but only on the final device in the daisy chain. This eliminates redundant feedback paths, simplifies layout, and reduces power dissipation by minimizing excess headroom across all 16 channels. The mechanism is explicitly documented in the device description section for TLC69664QRTWRQ1 and related variants.
What diagnostic capabilities does the TLC69664QRTWRQ1 provide?
The TLC69664QRTWRQ1 provides per-channel LED open detection (LOD), LED short detection (LSD), and device-level thermal shutdown detection (TSD). Diagnostic status can be reported either via UART + interrupt pin (INT) or two-wire output (CLK_O + SOUT), with register-programmable selection - a feature confirmed in the "Diagnostics" subsection of the official datasheet applicable to the TLC69664QRTWRQ1.
Is the TLC69664QRTWRQ1 pin-compatible with other members of the TLC696x-Q1 family in the same package?
Yes, all WQFN-24 variants in the TLC696x-Q1 family - including TLC69662QRTWRQ1, TLC69664QRTWRQ1, and TLC69668QRTWRQ1 - share identical pinout, package dimensions, and thermal pad layout. This allows drop-in replacement between current/voltage variants without PCB redesign, as verified in TI's mechanical drawings (RTW0024N) and orderable addendum for TLC69664QRTWRQ1.
TLC69664QRTWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- No
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 50V
- Current - Output / Channel:
- 60mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69664QRTWRQ1 FAQ
1.How can I place an order for TLC69664QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69664QRTWRQ1 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 TLC69664QRTWRQ1 reliable?
The price and inventory of TLC69664QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69664QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69664QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69664QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69664QRTWRQ1?
TLC69664QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69664QRTWRQ1 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 TLC69664QRTWRQ1?
For technical support, including TLC69664QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69664QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69664QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69664QRTWRQ1 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 TLC69664QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69664QRTWRQ1?
All TLC69664QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69664QRTWRQ1, 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 TLC69664QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69664QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69664QRTWRQ1 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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