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Texas Instruments TLC69662QRTWRQ1
- Part No.:
- TLC69662QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69662QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 32 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:1,354
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Product details
Overview
TLC69662QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC designed for local dimming backlight control in LCD displays. It delivers 60mA per channel at up to 50V output compliance, features 16 constant-current sinks with ±2% channel-to-channel matching, and supports 15-bit brightness resolution via PWM/hybrid dimming control in daisy-chained configurations for automotive central infotainment displays.
For engineers reviewing the TLC69662QRTWRQ1 datasheet, TLC69662QRTWRQ1 pinout, TLC69662QRTWRQ1 application, or TLC69662QRTWRQ1 equivalent, key selection criteria include its 60mA/50V sink capability, adaptive headroom voltage control (AHVC), UART/interrupt and two-wire (CLK_O/SOUT) diagnostic readback options, and wettable-flank WQFN-24 package for automotive-grade solder-joint inspection.
Technical Context
The TLC69662QRTWRQ1 implements time-multiplexed local dimming using 16 integrated constant-current sinks, each programmable via on-chip SRAM for per-zone brightness storage. Its daisy-chain interface operates at up to 20MHz with 1.8V/3.3V I/O compatibility and supports >32,000 zones across 1024 devices.
Diagnostics include per-channel LED open/short detection (LOD/LSD) and thermal shutdown (TSD), with dual readback paths: UART + INT pin or CLK_O/SOUT two-wire serial output. AHVC dynamically adjusts DC/DC feedback to minimize power loss while maintaining required VLED headroom.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 60mA per channel - enables high-brightness LED strings in automotive HUDs and clusters without external boosters |
| Output voltage compliance | 50V - supports longer LED strings (e.g., 12–15 LEDs @ 3.3V) in single-stage architectures |
| Brightness resolution | Up to 15-bit - provides fine-grained dimming control for high-contrast HDR display performance |
| Channel matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across local dimming zones |
| Supply voltage range | 3V to 5.5V - compatible with standard automotive 3.3V or 5V domain rails |
| Standby current | ≤200μA - minimizes quiescent power in always-on display systems |
| Data rate | Up to 20MHz daisy-chain - reduces frame update latency for real-time local dimming algorithms |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, wettable flank, 0.5mm pitch, exposed thermal pad. Compliant with IPC-7351 land pattern requirements and optimized for automated optical inspection (AOI) of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and analog circuitry; decoupling required near pin |
| GND | Ground reference | Common return for all currents; connects to exposed thermal pad for thermal and EMI performance |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain data synchronization; 1.8V/3.3V tolerant |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports diagnostic readback in two-wire mode |
| CLK_O | Serial clock output | Passes synchronized clock to next device; used with SOUT for diagnostic reporting |
| FB | DC/DC feedback input | Connects only to FB pin of last device in chain to enable system-level AHVC with single-point regulation |
| INT | Interrupt output | Active-low open-drain flag for LOD, LSD, or TSD events; configurable via register |
| OUT0–OUT15 | Constant-current sinks | 16 high-side referenced outputs; each drives cathode of LED string with 60mA/50V capability |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power dissipation by dynamically adjusting DC/DC output to match minimum required VLED across all active zones |
| Programmable interface drive strength | Minimizes EMI in high-speed daisy chains by allowing slew-rate tuning of CLK_I/SIN signals |
| Integrated 4-phase shifting schemes | Spreads switching energy across time domains to lower peak radiated emissions in EMC-sensitive automotive environments |
| Black insertion & VRR support | Enables motion blur reduction and variable refresh rate synchronization for enhanced display quality in dynamic scenes |
| UART + INT or CLK_O/SOUT readback | Provides flexible diagnostic integration: UART for full register access, or minimal two-wire for fault flag reporting |
Applications
| Automotive Central Infotainment Display | Automotive Cluster Display |
|---|---|
Use Scenario: High-resolution LCD dashboard with dynamic local dimming for contrast enhancement and glare reduction in daylight and night driving conditions. IC Role / Device Role / Timing Role: Primary 16-channel LED sink driver controlling individual backlight zones; synchronized via daisy-chain clock to host MCU or timing controller. Use Value: Enables 15-bit dimming depth and ±2% uniformity across zones, directly improving perceived contrast ratio and readability under varying ambient light. | Use Scenario: Driver-facing instrument cluster requiring high reliability, wide temperature operation, and real-time dimming response during vehicle startup and mode transitions. IC Role / Device Role / Timing Role: Local dimming controller managing segmented backlight regions behind analog/digital gauges and warning indicators. Use Value: AEC-Q100 Grade 1 qualification (–40°C to +125°C) and integrated thermal shutdown ensure functional safety compliance without external monitoring circuitry. |
| Automotive Head-Up Display (HUD) | Advanced Driver Assistance Systems (ADAS) Display |
Use Scenario: Compact HUD projector unit where space-constrained PCB layout demands high-output-density LED drivers with minimal external components. IC Role / Device Role / Timing Role: Constant-current sink for high-luminance LED arrays; leverages 50V compliance to drive multi-LED strings without series resistors or boost converters. Use Value: 60mA per channel and 50V compliance reduce component count and board area versus lower-voltage alternatives, enabling smaller optical engine designs. | Use Scenario: Safety-critical ADAS display overlaying camera or radar data onto windshield or combiner glass, requiring fail-safe backlight control and diagnostics. IC Role / Device Role / Timing Role: Fault-aware LED driver providing per-zone open/short detection and thermal monitoring, with UART-based diagnostic logging for ASIL-B system integration. Use Value: Integrated LOD/LSD/TSD flags and dual readback modes support ISO 26262 diagnostic coverage requirements without adding discrete sense or protection ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69662QPWPRQ1 | Same electrical specs but HTSSOP-28 package (9.7mm × 4.4mm); higher MSL level (Level-3 vs Level-1); no wettable flanks | Preferred where manual rework or legacy footprint compatibility is required; less suitable for automated AOI | Select when board assembly process lacks wettable-flank inspection capability or requires larger thermal pad access |
| TLC69664QRTWRQ1 | Same WQFN-24 package and pinout; supports 4-time multiplexing (vs 2× for TLC69662QRTWRQ1); identical 60mA/50V output | Used in higher-resolution local dimming systems requiring more zones per controller; increases zone count without increasing driver count | Choose when system architecture uses time-multiplexed scanning to reduce total driver IC count per display |
Compared with TLC69662QPWPRQ1, the TLC69662QRTWRQ1 offers superior manufacturability via wettable flanks and unlimited reflow rating, while TLC69664QRTWRQ1 extends functionality with 4× time-multiplexing-enabling higher zone density without changing PCB layout or thermal design.
Availability
TLC69662QRTWRQ1 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 TLC69662QRTWRQ1 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 delivering analog and embedded processing solutions, with deep expertise in automotive-grade power management and display interface technologies.
The TLC696x2/4/8-Q1 product line was engineered specifically for high-reliability automotive LCD local dimming, integrating precision current sinks, daisy-chain scalability, and functional safety diagnostics into a single-package solution.
FAQ
What is the maximum output voltage compliance of the TLC69662QRTWRQ1?
The TLC69662QRTWRQ1 supports up to 50V output voltage compliance per channel. This allows direct driving of longer LED strings-typically 12 to 15 white LEDs in series-without requiring external boost circuitry, simplifying power architecture in automotive displays while maintaining efficiency and thermal performance.
Does the TLC69662QRTWRQ1 support daisy-chain topology, and what is the maximum data rate?
Yes, the TLC69662QRTWRQ1 supports daisy-chain topology using its dedicated CLK_I, SIN, SOUT, and CLK_O pins. It achieves data transfer rates up to 20MHz with 1.8V/3.3V I/O compatibility, enabling fast frame updates across large-scale local dimming arrays-critical for minimizing motion blur and supporting high-refresh-rate displays.
How does the Adaptive Headroom Voltage Control (AHVC) function in the TLC69662QRTWRQ1?
The TLC69662QRTWRQ1's AHVC monitors the highest forward voltage requirement among all active LED channels and dynamically adjusts the DC/DC converter's output via the FB pin-only the last device in the daisy chain connects FB to the DC/DC regulator. This minimizes excess headroom, reducing power loss and heat generation without compromising LED performance.
What diagnostic capabilities does the TLC69662QRTWRQ1 provide, and how are they reported?
The TLC69662QRTWRQ1 provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These faults can be reported either through the interrupt pin (INT) or via the two-wire serial interface (CLK_O/SOUT), with UART offering full register access for detailed diagnostics in safety-critical automotive systems.
Is the TLC69662QRTWRQ1 qualified for automotive use, and what grade does it meet?
Yes, the TLC69662QRTWRQ1 is AEC-Q100 qualified for automotive applications and meets Grade 1 specifications: operating ambient temperature range of –40°C to +125°C, HBM ESD classification Level 2, and CDM ESD classification Level C4B-ensuring robustness in harsh vehicular environments and compatibility with automotive manufacturing and reliability standards.
TLC69662QRTWRQ1 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)
TLC69662QRTWRQ1 FAQ
1.How can I place an order for TLC69662QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69662QRTWRQ1 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 TLC69662QRTWRQ1 reliable?
The price and inventory of TLC69662QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69662QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69662QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69662QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69662QRTWRQ1?
TLC69662QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69662QRTWRQ1 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 TLC69662QRTWRQ1?
For technical support, including TLC69662QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69662QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69662QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69662QRTWRQ1 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 TLC69662QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69662QRTWRQ1?
All TLC69662QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69662QRTWRQ1, 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 TLC69662QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69662QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69662QRTWRQ1 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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