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Texas Instruments TLC69614QRTWRQ1
- Part No.:
- TLC69614QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69614QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 64 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:4,456
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Product details
Overview
TLC69614QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) 16-channel automotive LED driver IC with constant-current sink architecture, 60mA/50V output capability, ±2% channel-to-channel current matching, and adaptive headroom voltage control (AHVC) for LCD local dimming in central infotainment displays.
For engineers reviewing the TLC69614QRTWRQ1 datasheet, TLC69614QRTWRQ1 pinout, TLC69614QRTWRQ1 application, or TLC69614QRTWRQ1 equivalent, this device supports daisy-chained 15-bit PWM/hybrid dimming, UART/INT and SOUT/CLK_O diagnostic readback, and ESD-robust 1.8V/3.3V-compatible 20MHz serial interface - critical for high-reliability automotive display systems.
Technical Context
The TLC69614QRTWRQ1 implements a daisy-chainable two-wire serial interface supporting up to 1024 devices for 16,000-zone local dimming, with programmable interface drive strength and four integrated phase-shifting schemes to suppress EMI. Its AHVC loop directly controls external DC/DC via the FB pin of the last device in chain.
Diagnostic functionality includes per-channel LED open/short detection (LOD/LSD), thermal shutdown detection (TSD), and dual readback paths: UART + interrupt pin or two-wire CLK_O/SOUT - both configurable via register. Standby current is ≤200μA; normal-mode ICC is ≤3.5mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sinks for precise 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 |
| Dimming resolution | Up to 15-bit brightness control - supports smooth gradation and black insertion |
| Interface speed | Up to 20MHz daisy-chain data rate - reduces update latency for VRR-capable displays |
| Supply voltage | 3V to 5.5V VCC - compatible with automotive 3.3V and 5V domains |
| Operating temperature | –40°C to +125°C (Grade 1) - qualified for under-hood and dashboard mounting |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm wettable flank, 0.8mm max height, exposed thermal pad (Pin 25) requiring PCB solder connection for thermal and mechanical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and output drivers; decoupling required near pin |
| GND | Ground reference | Analog/digital common return; connects to thermal pad for low-impedance path |
| CLK_I | Serial clock input | Accepts 1.8V/3.3V-compatible clock; synchronizes 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 daisy chain; supports diagnostic readback mode |
| CLK_O | Serial clock output | Passes 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 AHVC regulation |
| INT | Interrupt output | Active-low open-drain flag for LOD, LSD, or TSD events; requires pull-up resistor |
| OUT0–OUT15 | Constant-current outputs | 16 high-side referenced current sinks; each drives cathode of LED string to GND |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting DC/DC output to minimum required LED forward voltage across all active zones |
| Programmable EMI suppression | Four selectable phase-shifting schemes + adjustable drive strength minimize radiated emissions in sensitive automotive EMC environments |
| Dual diagnostic readback | UART/INT and SOUT/CLK_O options provide flexibility in system-level fault reporting without adding extra interface lines |
| Black insertion & VRR support | Hardware-accelerated timing features reduce motion blur and enable variable refresh rate synchronization in advanced displays |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation at 125°C ambient - meets requirements for instrument cluster and HUD placement |
Applications
| Automotive Central Infotainment Display | Automotive Digital Instrument Cluster |
|---|---|
|
Use Scenario: High-resolution LCD panel with 512+ local dimming zones for glare-free daytime visibility and deep-black contrast at night. IC Role / Device Role / Timing Role: Primary 16-channel constant-current sink driver in daisy-chained topology; provides per-zone current control and real-time diagnostics. Use Value: Enables >10,000:1 dynamic contrast ratio while maintaining <±2% luminance uniformity across zones - critical for safety-critical HUD-like readability. |
Use Scenario: Compact 12.3-inch TFT-LCD cluster with segmented backlighting for speedometer, tachometer, and ADAS alerts. IC Role / Device Role / Timing Role: Local dimming controller managing 16 discrete LED zones behind gauge graphics; synchronized via SPI-to-serial bridge. Use Value: Reduces system power by 35% vs fixed-headroom design via AHVC; thermal shutdown detection prevents display failure during prolonged high-temperature operation. |
| Automotive Heads-Up Display (HUD) Backlight | Advanced Driver Assistance Systems (ADAS) Status Panel |
|
Use Scenario: Projection-based HUD requiring ultra-stable, flicker-free illumination of combiner glass with minimal thermal drift. IC Role / Device Role / Timing Role: Precision current source for RGB LED backlight array; leverages 15-bit dimming and black insertion for motion artifact suppression. Use Value: Achieves sub-1% current drift over temperature using on-chip trimming - preserves color fidelity and avoids ghosting during rapid brightness transitions. |
Use Scenario: Small-form-factor status indicator panel showing lane departure, blind spot, or emergency braking warnings. IC Role / Device Role / Timing Role: Zone-dimming driver for 16 individually controllable warning LEDs; integrates LOD/LSD detection to ensure fail-safe visibility. Use Value: Eliminates need for external fault monitoring circuitry; UART-based diagnostics allow OEMs to log LED health in vehicle telematics without added BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611QRTWRQ1 | Same 16-channel WQFN-24 package and interface, but rated for 60mA/20V output - lower maximum LED string voltage capability | Suitable for low-Vf LED arrays (e.g., white LEDs <3.5V) where 50V headroom is unnecessary | Select when system uses short LED strings and prioritizes cost over voltage margin |
| TLC69661QRTWRQ1 | Identical 60mA/50V rating and WQFN-24 footprint, but lacks UART diagnostic interface - supports SOUT/CLK_O only | Applicable where UART is unused and board layout must avoid UART routing congestion | Choose when diagnostic bandwidth requirements are met solely by two-wire readback and UART pins are unavailable |
Compared with TLC69614QRTWRQ1, TLC69611QRTWRQ1 trades 50V headroom for cost-sensitive 20V operation, while TLC69661QRTWRQ1 removes UART to simplify firmware and routing - neither offers full functional equivalence, but both serve distinct automotive subsystem constraints.
Availability
TLC69614QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and heads-up display backlighting requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC69614QRTWRQ1 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 ISO/TS 16949-certified manufacturing.
The TLC696x1-Q1 product line was engineered specifically for AEC-Q100-compliant LCD local dimming in next-generation automotive displays - emphasizing precision current matching, EMI resilience, and integrated diagnostics for ASIL-B–aligned systems.
FAQ
What is the maximum LED string voltage supported by the TLC69614QRTWRQ1?
The TLC69614QRTWRQ1 supports up to 50V across its 16 constant-current sink outputs, enabling direct drive of longer LED strings or higher-forward-voltage LEDs (e.g., blue/white LEDs in series). This 50V rating is confirmed in the official datasheet's "Features" section and distinguishes it from the 20V-rated TLC69611-Q1 variants. The TLC69614QRTWRQ1 maintains ±2% channel-to-channel current accuracy across this full voltage range.
Does the TLC69614QRTWRQ1 support daisy-chaining, and how many devices can be cascaded?
Yes, the TLC69614QRTWRQ1 uses a two-wire daisy-chain interface (CLK_I/SIN in, CLK_O/SOUT out) supporting up to 1024 devices in a single chain - enabling control of 16,000 local dimming zones. This topology is explicitly documented in the "Description" section and validated in TI's application notes for large-format automotive displays. Each TLC69614QRTWRQ1 contributes 16 zones to the total count.
What diagnostic functions does the TLC69614QRTWRQ1 provide, and how are they reported?
The TLC69614QRTWRQ1 provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These faults are reported via two configurable paths: UART + INT pin (active-low interrupt) or two-wire SOUT/CLK_O. Register settings determine which mode is active, allowing system designers to select based on interface availability and diagnostic bandwidth needs - all confirmed in the "Features" and "Description" sections.
Is the TLC69614QRTWRQ1 pin-compatible with other TLC696x1-Q1 variants in WQFN-24?
Yes, all WQFN-24 variants - including TLC69601QRTWRQ1, TLC69611QRTWRQ1, TLC69651QRTWRQ1, and TLC69661QRTWRQ1 - share identical pinout, package dimensions (4mm × 4mm), and thermal pad layout per TI's mechanical drawings (RTW0024N). This allows drop-in replacement within the same voltage/current class, though functional differences (e.g., UART presence, max VOUT) require firmware validation.
What is the purpose of the Adaptive Headroom Voltage Control (AHVC) feature in the TLC69614QRTWRQ1?
AHVC in the TLC69614QRTWRQ1 dynamically adjusts the external DC/DC converter's output voltage to match the highest forward voltage among all active LED strings - minimizing power dissipation in the driver IC. Only the FB pin of the last device in the daisy chain connects to the DC/DC feedback node, simplifying layout. This feature is detailed in the "Description" and "Features" sections and directly enables >30% efficiency improvement versus fixed-headroom designs.
TLC69614QRTWRQ1 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:
- 20V
- 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)
TLC69614QRTWRQ1 FAQ
1.How can I place an order for TLC69614QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69614QRTWRQ1 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 TLC69614QRTWRQ1 reliable?
The price and inventory of TLC69614QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69614QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69614QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69614QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69614QRTWRQ1?
TLC69614QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69614QRTWRQ1 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 TLC69614QRTWRQ1?
For technical support, including TLC69614QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69614QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69614QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69614QRTWRQ1 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 TLC69614QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69614QRTWRQ1?
All TLC69614QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69614QRTWRQ1, 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 TLC69614QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69614QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69614QRTWRQ1 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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