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Texas Instruments TLC69608QPWPRQ1
- Part No.:
- TLC69608QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69608QPWPRQ1.pdf
- Description:
- AUTOMOTIVE 128 MINI-LED MATRIX L
- Quantity:
- Payment:
- Shipping:
Inventory:2,081
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Product details
Overview
TLC69608QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED backlight driver with 16 constant-current sinks, 30mA/20V output capability, ±2% channel-to-channel current matching, and 15-bit brightness resolution for local dimming control in LCD displays.
For engineers reviewing the TLC69608QPWPRQ1 datasheet, TLC69608QPWPRQ1 pinout, TLC69608QPWPRQ1 application, or TLC69608QPWPRQ1 equivalent, this device supports daisy-chained time-multiplexed dimming (8×), adaptive headroom voltage control (AHVC), UART/interrupt diagnostics, and ESD-robust 20MHz serial interface for automotive cluster, HUD, and central infotainment displays.
Technical Context
The TLC69608QPWPRQ1 implements time-multiplexed local dimming with 8× scan ratio, enabling up to 1024 devices per chain for >32,000 zones. It integrates SRAM per channel for brightness storage and supports hybrid PWM/current-mode dimming with black insertion and VRR features.
Its diagnostic architecture includes per-zone LED open/short detection and thermal shutdown, with dual readback options: UART/INT or two-wire CLK_O/SOUT. AHVC directly controls external DC/DC via FB pin from last device in chain to minimize system power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 constant-current sinks for independent LED zone control |
| Max Output Current / Voltage | 30mA per channel at up to 20V - supports standard automotive LED strings |
| Current Matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across dimming zones |
| Brightness Resolution | Up to 15-bit - enables fine-grained contrast control and smooth gradation |
| Interface Speed | Up to 20MHz daisy-chain SPI - reduces frame update latency in high-refresh displays |
| Supply Voltage Range | 3V to 5.5V VCC - compatible with automotive 3.3V and 5V rail systems |
| Quiescent Current | ≤200μA standby, ≤3.5mA normal mode - minimizes always-on power in vehicle ECUs |
Pinout & Package
Package: HTSSOP-28 (PWP) with PowerPAD™ thermal pad; 9.7mm × 4.4mm body, 1.2mm max height, wettable flank option available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and output drivers |
| GND | Ground reference | Common return for analog/digital circuits and thermal pad connection |
| CLK_I | Serial clock input | Accepts master clock up to 20MHz for synchronous daisy-chain operation |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports diagnostic readback |
| CLK_O | Output clock | Propagates synchronized clock to next device; used with SOUT for two-wire readback |
| FB | Feedback input | Connects only from last device in chain to DC/DC converter for adaptive headroom control |
| INT | Interrupt output | Active-low signal indicating LOD/LSD/TSD fault conditions |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks driving LED cathodes; each supports 30mA/20V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 | Qualified for –40°C to +125°C ambient operation - meets automotive under-hood and display module requirements |
| Adaptive Headroom Voltage Control (AHVC) | Reduces power dissipation by dynamically adjusting LED string voltage to minimum required headroom |
| Programmable EMI reduction | Four integrated phase-shifting schemes and configurable drive strength lower radiated emissions in EMC-sensitive cabins |
| Dual diagnostic readback | Selectable UART/INT or CLK_O/SOUT reporting - simplifies integration with different MCU interfaces |
| Time-multiplexing support | 8× scan ratio with dedicated TLC696x0-Q1 controller compatibility - scales local dimming zones without added routing |
Applications
| Automotive Cluster Display | Automotive Head-Up Display (HUD) |
|---|---|
Use Scenario: High-contrast, low-power instrument cluster with dynamic dimming zones behind analog gauges and digital overlays. IC Role / Device Role / Timing Role: Local dimming controller managing 16 independent LED backlight segments synchronized to display refresh. Use Value: Enables true black levels and >10,000:1 contrast ratio while maintaining <200μA standby current during ignition-off states. |
Use Scenario: Compact HUD projection unit requiring precise luminance control across curved optical path illumination zones. IC Role / Device Role / Timing Role: Constant-current sink array driving segmented LED light engine with 15-bit grayscale fidelity. Use Value: Eliminates blooming artifacts around critical speed/ADAS symbols through sub-100μs brightness update latency and black insertion timing. |
| Central Infotainment Display | Automotive Rear Seat Entertainment |
Use Scenario: 10.25″+ center console display with regional dimming for glare reduction in daylight and cabin ambient light adaptation. IC Role / Device Role / Timing Role: Daisy-chained node in multi-device local dimming system, receiving brightness commands via 20MHz serial interface. Use Value: Supports >32,000 total dimming zones across 1024 devices, enabling pixel-level contrast control without increasing host processor load. |
Use Scenario: Dual-screen rear seat system where independent dimming preserves battery life and reduces thermal load in confined space. IC Role / Device Role / Timing Role: Automotive-grade LED driver with thermal shutdown and LED open/short detection per zone for safety-critical monitoring. Use Value: Meets ASIL-B readiness via built-in diagnostics (LOD/LSD/TSD) and functional safety documentation support for ISO 26262 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69608QRTWRQ1 | Same electrical specs; WQFN-24 package (4mm × 4mm, wettable flank), Level-1 MSL rating | Better thermal performance and smaller footprint; requires different PCB land pattern and stencil design | Select for space-constrained modules needing enhanced thermal dissipation and reflow simplicity |
| TLC69618QPWPRQ1 | 60mA/20V output (vs. 30mA), identical pinout and interface; higher current per channel | Supports brighter LED strings or fewer parallel strings; increases power delivery per zone | Choose when display brightness targets exceed 1000 cd/m² or when reducing LED count per zone is prioritized |
Compared with TLC69608QPWPRQ1, the WQFN variant offers superior thermal management in compact layouts, while the TLC69618QPWPRQ1 delivers double the current per channel-enabling either higher luminance or simplified LED string topology without changing system architecture.
Availability
TLC69608QPWPRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, head-up displays, and central infotainment systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TLC69608QPWPRQ1 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, embedded processing, and connectivity solutions with deep automotive qualification expertise and functional safety infrastructure.
The TLC696x-Q1 product line was engineered specifically for automotive LCD local dimming, integrating time-multiplexing control, adaptive power management, and robust diagnostics to meet stringent ASIL-ready display system requirements.
FAQ
What is the maximum number of TLC69608QPWPRQ1 devices that can be daisy-chained?
The TLC69608QPWPRQ1 supports daisy chains of up to 1024 devices, enabling over 32,000 local dimming zones in large-format automotive displays. This scalability is achieved through its 20MHz high-speed serial interface and dedicated CLK_O/SOUT signaling, with timing parameters validated across full chain lengths in TI's automotive reference designs.
Does TLC69608QPWPRQ1 require an external microcontroller for configuration?
Yes, the TLC69608QPWPRQ1 requires an external host MCU to initialize registers, load brightness data into its internal SRAM, and manage diagnostics. It does not include embedded firmware or autonomous operation - it functions as a peripheral driver controlled via its daisy-chain serial interface.
How does the Adaptive Headroom Voltage Control (AHVC) function in TLC69608QPWPRQ1?
AHVC in the TLC69608QPWPRQ1 dynamically adjusts the LED string supply voltage by feeding back only the FB pin from the last device in the daisy chain to the external DC/DC converter. This eliminates redundant headroom across all upstream devices, reducing system power loss by up to 35% compared to fixed-voltage architectures.
What diagnostic capabilities does TLC69608QPWPRQ1 provide per LED channel?
The TLC69608QPWPRQ1 provides per-channel LED open detection (LOD) and LED short detection (LSD), plus global thermal shutdown detection (TSD). Fault status is reported via either UART/interrupt pin or two-wire CLK_O/SOUT interface, allowing real-time health monitoring without interrupting display operation.
Is TLC69608QPWPRQ1 pin-compatible with other members of the TLC696x-Q1 family?
Yes, all HTSSOP-28 variants in the TLC696x-Q1 family-including TLC69602QPWPRQ1, TLC69604QPWPRQ1, and TLC69608QPWPRQ1-share identical pinout, package dimensions, and interface protocol. This allows direct substitution based on current/voltage requirements without PCB redesign.
TLC69608QPWPRQ1 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:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- No
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 20V
- Current - Output / Channel:
- 30mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TLC69608QPWPRQ1 FAQ
1.How can I place an order for TLC69608QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69608QPWPRQ1 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 TLC69608QPWPRQ1 reliable?
The price and inventory of TLC69608QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69608QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69608QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69608QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69608QPWPRQ1?
TLC69608QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69608QPWPRQ1 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 TLC69608QPWPRQ1?
For technical support, including TLC69608QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69608QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69608QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69608QPWPRQ1 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 TLC69608QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69608QPWPRQ1?
All TLC69608QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69608QPWPRQ1, 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 TLC69608QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69608QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69608QPWPRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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