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Texas Instruments TLC69618QPWPRQ1
- Part No.:
- TLC69618QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69618QPWPRQ1.pdf
- Description:
- AUTOMOTIVE 128 MINI-LED MATRIX L
- Quantity:
- Payment:
- Shipping:
Inventory:3,701
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Product details
Overview
TLC69618QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) 16-channel automotive LED driver IC for local dimming backlight systems, delivering 60mA per channel at up to 50V output compliance, ±2% channel-to-channel current matching, and 15-bit brightness resolution in PWM/hybrid dimming mode - deployed in central infotainment displays requiring precise zone control and thermal robustness.
For engineers reviewing the TLC69618QPWPRQ1 datasheet, TLC69618QPWPRQ1 pinout, TLC69618QPWPRQ1 application, or TLC69618QPWPRQ1 equivalent, key selection criteria include its adaptive headroom voltage control (AHVC), UART/INT and SOUT/CLK_O diagnostic reporting options, daisy-chainable 20MHz two-wire interface, and integrated LED open/short/thermal shutdown detection for ASIL-B–capable display subsystems.
Technical Context
The TLC69618QPWPRQ1 implements a constant-current sink architecture with SRAM-based brightness storage per channel, enabling black insertion and variable refresh rate (VRR) support to enhance LCD contrast and motion clarity. Its daisy-chain topology supports up to 1024 devices (16,000 zones) with single FB-pin feedback to DC/DC controller for simplified system layout.
Diagnostic functionality includes three dedicated error flags (LOD, LSD, TSD) and dual readback paths: programmable UART/INT interrupt reporting or two-wire SOUT/CLK_O serial output. Interface I/O is compatible with 1.8V and 3.3V logic levels, and EMI is mitigated via four integrated phase-shifting schemes and programmable drive strength.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sinks for local dimming zone control |
| Max output current/voltage | 60mA per channel at up to 50V compliance - supports high-Vf LED strings in automotive HUDs |
| Current accuracy | ±2% (typ.) channel-to-channel matching - ensures uniform luminance across display zones |
| Brightness resolution | Up to 15-bit PWM/hybrid dimming - enables smooth grayscale transitions and deep black levels |
| Daisy-chain data rate | Up to 20MHz two-wire serial interface - reduces update latency for real-time dimming response |
| Supply voltage range | 3V to 5.5V VCC - compatible with standard automotive 3.3V/5V rails |
| Quiescent current | ≤200μA in standby mode - minimizes power draw during display sleep states |
Pinout & Package
Package: HTSSOP-28 (PWP) with PowerPAD™ thermal pad; 9.7mm × 4.4mm body size; wettable flank option available for automated optical inspection.
| 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 analog/digital circuits and thermal pad connection |
| 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 | Drives downstream device in daisy chain; supports diagnostic readback |
| CLK_O | Serial clock output | Propagates synchronized clock to next device; used with SOUT for diagnostics |
| FB | Feedback input | Connects only from last device in chain to DC/DC converter for AHVC loop control |
| OUT0–OUT15 | Constant-current outputs | 16 high-side referenced current sinks driving LED cathodes |
| INT | Interrupt output | Active-low open-drain flag for LOD/LSD/TSD events when UART mode disabled |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates DC/DC output to minimize power loss and heat generation across varying LED forward voltages |
| Dual diagnostic reporting | Selectable UART/INT interrupt or SOUT/CLK_O serial output - enables flexible integration into safety-critical display controllers |
| Programmable EMI reduction | Four built-in phase-shifting schemes plus adjustable interface drive strength - simplifies EMC compliance in noisy automotive environments |
| Black insertion & VRR support | Hardware-accelerated timing features reduce motion blur and improve perceived refresh fidelity without host CPU overhead |
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM Level 2 / CDM Level C4B ESD robustness - meets automotive reliability requirements |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel with 256+ local dimming zones for glare-free navigation UI under direct sunlight. IC Role / Device Role / Timing Role: Primary 16-channel current sink driver coordinating with host MCU via daisy-chained serial interface; provides per-zone brightness control and real-time fault reporting. Use Value: Enables >10,000:1 dynamic contrast ratio and eliminates halo artifacts through precise current matching and low-latency updates. |
Use Scenario: Compact instrument cluster with segmented LCD requiring high-brightness, low-power backlighting across wide temperature ranges. IC Role / Device Role / Timing Role: Local dimming controller managing 16 LED zones behind TFT glass; operates in standby mode (<200μA) during vehicle ignition-off state. Use Value: Reduces system power by 35% versus fixed-current solutions while maintaining ASIL-B diagnostic coverage via LOD/LSD/TSD flags. |
| Automotive Heads-Up Display (HUD) | Advanced Driver Assistance Systems (ADAS) Display |
Use Scenario: Projection-based HUD with high-luminance LED array requiring tight thermal management and flicker-free dimming. IC Role / Device Role / Timing Role: Constant-current driver implementing black insertion and VRR synchronization to suppress motion blur during high-speed driving. Use Value: Achieves sub-1ms brightness update latency and eliminates visible PWM artifacts at 120Hz+ frame rates. |
Use Scenario: Safety-critical ADAS overlay display fused with camera feed, demanding fail-safe backlight control and diagnostic traceability. IC Role / Device Role / Timing Role: Functional safety-capable LED driver providing UART-based diagnostic logging and hardware-level fault signaling to domain controller. Use Value: Supports ISO 26262 ASIL-B decomposition by delivering deterministic error reporting and configurable watchdog timeout behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611QPWPRQ1 | Same 16-channel architecture and HTSSOP-28 package, but rated for 60mA/20V output - lower voltage headroom than TLC69618QPWPRQ1's 50V rating | Suitable for low-Vf RGB LED arrays in clusters; not recommended for high-Vf white LED strings in HUDs | Select when system DC/DC output is ≤20V and thermal constraints favor lower dissipation |
| TPS61196RTVR | Single-channel 1.5A boost LED driver with I²C interface; no daisy-chain capability or multi-zone diagnostics | Targeted at small-area indicator lighting, not large-panel local dimming; lacks LOD/LSD/TSD reporting | Use only for non-dimming or single-zone applications where high current per string is required over zone count |
Compared with TLC69611QPWPRQ1 and TPS61196RTVR, the TLC69618QPWPRQ1 uniquely combines 50V channel compliance, 16-zone daisy-chain scalability, and dual-path diagnostics - making it the only qualified option for high-dynamic-range automotive HUD backlighting with functional safety traceability.
Availability
TLC69618QPWPRQ1 is available at Aetrix Electronics and suitable for automotive central infotainment displays, digital instrument clusters, and heads-up displays requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for TLC69618QPWPRQ1 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 company specializing in analog, embedded processing, and automotive-grade ICs, with over 50 years of leadership in power management and display interface technologies.
The TLC696x1-Q1 product line was engineered specifically for automotive LCD local dimming systems, emphasizing functional safety readiness, thermal resilience, and scalable multi-device synchronization in safety-critical cockpit electronics.
FAQ
What is the maximum LED string voltage supported by the TLC69618QPWPRQ1?
The TLC69618QPWPRQ1 supports up to 50V output compliance per channel, enabling direct drive of high-forward-voltage white LED strings commonly used in automotive HUDs and premium infotainment displays. This 50V rating distinguishes it from the 20V variants (e.g., TLC69611QPWPRQ1) and allows greater flexibility in LED configuration without external voltage boosting.
Does the TLC69618QPWPRQ1 support functional safety certification?
Yes, the TLC69618QPWPRQ1 is functional safety-capable with documentation available to aid ISO 26262 ASIL-B system design. It integrates three hardware-monitored diagnostics - LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD) - and supports dual reporting paths (UART/INT or SOUT/CLK_O) for fault traceability in safety-critical display subsystems.
How many TLC69618QPWPRQ1 devices can be daisy-chained together?
Up to 1024 TLC69618QPWPRQ1 devices can be connected in daisy-chain topology using the 20MHz two-wire serial interface, supporting up to 16,000 individually controllable local dimming zones. Only the FB pin of the final device in the chain must connect to the DC/DC converter, simplifying PCB routing and reducing component count.
What package options are available for the TLC69618QPWPRQ1?
The TLC69618QPWPRQ1 is offered exclusively in the HTSSOP-28 (PWP) package with PowerPAD™ thermal enhancement - 9.7mm × 4.4mm body size, 1.2mm max height, and wettable flank geometry for automated optical inspection. Unlike other members of the TLC696x1-Q1 family, no WQFN variant exists for this specific part number.
What diagnostic reporting modes does the TLC69618QPWPRQ1 support?
The TLC69618QPWPRQ1 supports two configurable diagnostic reporting modes: UART with interrupt pin (INT) for register-based status reads, or two-wire serial output (SOUT/CLK_O) for compact, low-pin-count fault telemetry. Both modes report LED open, LED short, and thermal shutdown events, and selection is made via internal configuration registers at power-up.
TLC69618QPWPRQ1 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:
- 60mA
- 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
TLC69618QPWPRQ1 FAQ
1.How can I place an order for TLC69618QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69618QPWPRQ1 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 TLC69618QPWPRQ1 reliable?
The price and inventory of TLC69618QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69618QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69618QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69618QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69618QPWPRQ1?
TLC69618QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69618QPWPRQ1 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 TLC69618QPWPRQ1?
For technical support, including TLC69618QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69618QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69618QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69618QPWPRQ1 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 TLC69618QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69618QPWPRQ1?
All TLC69618QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69618QPWPRQ1, 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 TLC69618QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69618QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69618QPWPRQ1 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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