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Texas Instruments TLC69654QRTWRQ1
- Part No.:
- TLC69654QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69654QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 64 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:3,878
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Product details
Overview
TLC69654QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC for local dimming backlight systems, integrating 16 high-precision constant-current sinks (30mA/50V), 15-bit brightness resolution, adaptive headroom voltage control (AHVC), and daisy-chain UART/INT or SOUT/CLK_O diagnostics - deployed in central infotainment displays requiring precise zone control and thermal robustness.
For engineers reviewing the TLC69654QRTWRQ1 datasheet, TLC69654QRTWRQ1 pinout, TLC69654QRTWRQ1 application, or TLC69654QRTWRQ1 equivalent, key selection criteria include its 30mA/50V sink capability, WQFN-24 wettable flank package with thermal pad, 20MHz daisy-chain interface, ±2% channel-to-channel current matching, and integrated LED open/short/thermal shutdown detection with programmable readback mode.
Technical Context
The TLC69654QRTWRQ1 implements time-multiplexed local dimming control using 16 independent current sinks, each paired with SRAM-based brightness storage for up to 15-bit PWM/hybrid dimming. It supports 2/4/8× time-multiplexing when paired with TLC696x0-Q1 scan controllers.
Its adaptive headroom voltage control (AHVC) dynamically regulates external DC/DC feedback via a single FB pin from the last device in chain, minimizing power loss across the LED string while enabling >32,000-zone scalability via daisy-chained topology with up to 1024 devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 30mA per channel, rated up to 50V compliance - enables driving high-Vf LED strings in automotive LCD backlights without external boost stages. |
| Current Matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across local dimming zones without per-channel calibration. |
| Brightness Resolution | Up to 15-bit - supports fine-grained contrast control for HDR display quality and black-level fidelity. |
| Daisy-Chain Speed | Up to 20MHz data rate - allows rapid update of thousands of dimming zones within video frame timing constraints. |
| Supply Voltage | 3V to 5.5V VCC - compatible with standard automotive 3.3V or 5V domain rails without level-shifting. |
| Power Consumption | ≤3.5mA ICC (normal mode), ≤200μA (standby) - minimizes system-level power budget impact in always-on display modules. |
| Diagnostic Outputs | UART + INT pin or CLK_O + SOUT dual-mode reporting - provides flexible integration with host MCU interrupt handling or serial polling schemes. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, wettable flank, exposed thermal pad (pin 25), MSL Level-1, -40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and output drivers; bypass capacitor required near pin. |
| GND | Ground reference | Common return for analog/digital circuits; connects to thermal pad for thermal and EMI performance. |
| CLK_I | Input clock | Accepts 1.8V/3.3V-compatible clock signal to synchronize 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 in SOUT/CLK_O mode. |
| CLK_O | Output clock | Propagates synchronized clock to next device; used with SOUT for diagnostic reporting. |
| FB | DC/DC feedback input | Only connected on last device in chain to regulate adaptive headroom voltage for entire string. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events; requires external pull-up. |
| OUT0–OUT15 | Constant-current sinks | 16 dedicated outputs; each drives one LED zone with 30mA/50V capability and internal current regulation. |
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 - meets automotive reliability requirements out-of-box. |
| Adaptive Headroom Voltage Control (AHVC) | Reduces power dissipation by dynamically adjusting DC/DC output to match minimum required VLED headroom across all active zones. |
| Programmable diagnostics reporting | Select between UART/INT or SOUT/CLK_O modes to match host interface architecture without hardware change. |
| EMI reduction schemes | Four integrated phase-shifting options and programmable drive strength lower radiated emissions in sensitive display environments. |
| Black insertion & VRR support | Hardware-accelerated timing features improve motion clarity and reduce flicker in high-refresh-rate automotive displays. |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel with 1024+ local dimming zones for dynamic contrast enhancement in center console units. IC Role / Device Role / Timing Role: Primary LED current sink controller managing 16 zones per IC, daisy-chained with up to 64 devices for full-panel control. Use Value: Enables >100,000:1 contrast ratio and true black levels while maintaining AEC-Q100 thermal stability under dashboard temperature cycling. |
Use Scenario: Compact instrument cluster with segmented backlighting requiring precise luminance uniformity and fast boot-time dimming initialization. IC Role / Device Role / Timing Role: Local dimming driver with 15-bit resolution and <1ms brightness update latency for real-time gauge animation rendering. Use Value: Eliminates visible banding during speedometer sweeps and supports seamless day/night mode transitions without perceptible lag. |
| Automotive Head-Up Display (HUD) | Advanced Driver Assistance Systems (ADAS) HUD Overlay |
Use Scenario: Projection-based HUD with high-brightness LED array where thermal management and current precision directly impact image sharpness. IC Role / Device Role / Timing Role: Constant-current sink for 50V LED strings; AHVC minimizes junction heating during sustained high-luminance operation. Use Value: Maintains consistent color point and lumen output over lifetime by reducing thermal drift through adaptive voltage regulation. |
Use Scenario: ADAS warning overlay projected onto windshield, requiring instant-on dimming response and fault-isolated zone control. IC Role / Device Role / Timing Role: Fault-aware driver with per-zone LED open/short detection and thermal shutdown reporting via INT pin. Use Value: Enables fail-safe illumination fallback (e.g., reduced zone count) without full system reset, meeting ASIL-B diagnostic coverage targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69654QPWPRQ1 | Same electrical specs but HTSSOP-28 package (9.7mm × 4.4mm); higher MSL Level-3; no wettable flanks. | Preferred where manual optical inspection or legacy PCB reflow profiles require gull-wing leads. | Select when board assembly uses conventional TSSOP reflow or requires visual solder joint verification. |
| TLC69652QRTWRQ1 | Identical WQFN-24 package and pinout, but rated for 30mA/20V - lower compliance voltage limits string length. | Suitable for low-Vf RGB LED arrays or shorter strings where 50V headroom is unnecessary. | Choose for cost-sensitive designs with ≤20V LED forward voltage to reduce external DC/DC complexity. |
Compared with TLC69654QPWPRQ1, the TLC69654QRTWRQ1 offers superior thermal performance and automated optical inspection compatibility via wettable flanks; versus TLC69652QRTWRQ1, it delivers critical 50V compliance for high-brightness white LED strings in demanding automotive lighting environments.
Availability
TLC69654QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and head-up display backlighting requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for TLC69654QRTWRQ1 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 TLC696x-Q1 product line was engineered specifically for automotive LCD local dimming systems, emphasizing functional safety readiness, thermal resilience, and scalable multi-device synchronization for high-contrast, low-power display architectures.
FAQ
What is the maximum LED string voltage supported by the TLC69654QRTWRQ1?
The TLC69654QRTWRQ1 supports up to 50V compliance voltage per output channel, enabling direct drive of multi-LED white strings without intermediate boost circuitry - verified per datasheet Section 7.3 and confirmed in the "Maximum output current / voltage" specification for TLC6965x-Q1 variants. This rating applies across the full -40°C to +125°C operating range.
Does the TLC69654QRTWRQ1 require external current-setting resistors?
No, the TLC69654QRTWRQ1 integrates precision internal current references and does not require external resistors to set output current - its 30mA per channel is factory-trimmed and maintained via on-die regulation. External components are limited to VCC bypass capacitors, FB loop compensation, and optional INT pull-up, as specified in the "Typical Application" schematic on page 1 of the datasheet.
How many TLC69654QRTWRQ1 devices can be daisy-chained reliably?
The TLC69654QRTWRQ1 supports daisy-chain topologies of up to 1024 devices, enabling control of more than 32,000 local dimming zones - confirmed in the "Description" section and validated by the 20MHz maximum data rate, low-latency register access, and integrated signal integrity features including programmable drive strength and phase-shifting schemes.
What diagnostic faults does the TLC69654QRTWRQ1 detect and report?
The TLC69654QRTWRQ1 detects and reports three distinct hardware faults: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). These are reported either via the dedicated INT pin or through serial readback using UART/INT or SOUT/CLK_O modes - all documented in Section 1 (Features) and Section 8.5 (Diagnostics) of the datasheet.
Is the TLC69654QRTWRQ1 pin-compatible with other members of the TLC696x-Q1 family?
Yes - the TLC69654QRTWRQ1 shares identical pinout, package (WQFN-24 RTW), and footprint with all other TLC696x-Q1 variants offered in the RTW package, including TLC69602QRTWRQ1 through TLC69668QRTWRQ1. This allows layout reuse across current/voltage variants without PCB revision, provided firmware and external biasing match the selected variant's ratings.
TLC69654QRTWRQ1 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:
- 30mA
- 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)
TLC69654QRTWRQ1 FAQ
1.How can I place an order for TLC69654QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69654QRTWRQ1 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 TLC69654QRTWRQ1 reliable?
The price and inventory of TLC69654QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69654QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69654QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69654QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69654QRTWRQ1?
TLC69654QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69654QRTWRQ1 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 TLC69654QRTWRQ1?
For technical support, including TLC69654QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69654QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69654QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69654QRTWRQ1 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 TLC69654QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69654QRTWRQ1?
All TLC69654QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69654QRTWRQ1, 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 TLC69654QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69654QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69654QRTWRQ1 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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