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Texas Instruments TLC69658QRTWRQ1
- Part No.:
- TLC69658QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69658QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 128 MINI-LED MATRIX L
- Quantity:
- Payment:
- Shipping:
Inventory:1,725
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Product details
Overview
TLC69658QRTWRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED backlight driver with 16 constant-current sinks, 30mA/50V output capability, ±2% channel-to-channel current matching, and 15-bit brightness resolution for LCD local dimming systems. It supports 8-time-multiplexing control in daisy-chain topology and integrates adaptive headroom voltage control (AHVC) for high-efficiency DC/DC management in central infotainment displays.
For engineers reviewing the TLC69658QRTWRQ1 datasheet, TLC69658QRTWRQ1 pinout, TLC69658QRTWRQ1 application, or TLC69658QRTWRQ1 equivalent, key selection criteria include its 50V LED sink rating, WQFN-24 wettable flank package for automotive thermal reliability, UART/interrupt and two-wire diagnostic readback options, and functional safety documentation support for ASIL-B system integration.
Technical Context
The TLC69658QRTWRQ1 implements time-multiplexed local dimming using 16 independent current sinks with programmable global 8-bit maximum current (MC) setting and per-zone 15-bit PWM/hybrid dimming control. Its daisy-chain interface operates at up to 20MHz with 1.8V/3.3V I/O compatibility and integrated 4-phase shifting to suppress EMI.
Diagnostic architecture includes dedicated LED open (LOD), LED short (LSD), and thermal shutdown (TSD) detection per zone, with dual readback paths: UART + INT pin or CLK_O/SOUT two-wire serial output - both register-programmable for system-level fault reporting and diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current / Voltage | 30mA per channel into up to 50V LED string - enables high-brightness, high-contrast automotive LCD backlights with wide VLED headroom |
| Current Matching | ±2% device-to-device and channel-to-channel error - ensures uniform luminance across dimming zones without per-channel calibration |
| Brightness Resolution | Up to 15-bit - supports smooth grayscale transitions and eliminates visible contouring in HDR display applications |
| Daisy-Chain Speed | Up to 20MHz data rate - allows >32,000 local dimming zones via cascaded devices with minimal update latency |
| Power Consumption | ≤3.5mA in normal mode, ≤200μA in standby - reduces system-level power budget and thermal load in always-on displays |
| Operating Temp Range | –40°C to +125°C ambient - qualified for under-hood and dashboard-mounted automotive display modules |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, wettable flank, exposed thermal pad, 0.5mm pitch - optimized for automated optical inspection (AOI) and thermal performance in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | 3V–5.5V main power rail for logic and analog circuitry; decoupling required per TI layout guidelines |
| GND | Ground reference | Common return path for all internal circuits and external LED strings; tied to thermal pad for thermal dissipation |
| CLK_I / SIN | Serial interface inputs | Accepts daisy-chain clock and data from upstream device; supports 20MHz operation with 1.8V/3.3V logic levels |
| SOUT / CLK_O | Serial interface outputs | Drives downstream device in chain; SOUT carries shifted data, CLK_O propagates synchronized clock |
| FB | Feedback input | Connects only to FB pin of last device in chain to regulate DC/DC converter output voltage via AHVC scheme |
| INT | Interrupt output | Active-low open-drain signal indicating LOD/LSD/TSD fault events; requires external pull-up resistor |
| OUT0–OUT15 | Constant-current sinks | 16 individually controlled LED current outputs; each capable of sinking 30mA into 50V VLED supply |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates DC/DC converter via single FB pin on final device - simplifies layout and minimizes system voltage overhead |
| Programmable EMI Reduction | Four selectable phase-shifting schemes and configurable drive strength reduce radiated emissions without external filters |
| Dual Diagnostic Readback | UART + INT or CLK_O/SOUT modes - enables flexible integration with host MCU's UART peripheral or GPIO/timer resources |
| Black Insertion & VRR Support | Hardware-accelerated timing features improve motion clarity and reduce flicker in high-refresh-rate automotive displays |
| AEC-Q100 Grade 1 Qualification | Validated for –40°C to +125°C operation with HBM ESD Level 2 and CDM Level C4B - meets automotive reliability requirements |
Applications
| Automotive Central Infotainment Display | Automotive Digital Cluster Display |
|---|---|
Use Scenario: High-resolution LCD panel in center-stack infotainment unit requiring dynamic local dimming for contrast enhancement and power savings. IC Role / Device Role / Timing Role: Primary 16-channel LED sink driver implementing 8× time-multiplexed local dimming zones per device, daisy-chained for full-panel control. Use Value: Enables >10,000 dimming zones per display with <2% current mismatch, supporting HDR content rendering and reduced backlight power consumption. | Use Scenario: Compact digital instrument cluster with segmented LCD requiring precise, low-latency brightness control across multiple sub-regions. IC Role / Device Role / Timing Role: Local dimming controller managing discrete LED zones behind gauge graphics; synchronized via daisy-chain clock for frame-aligned updates. Use Value: Achieves flicker-free dimming with 15-bit resolution and black insertion, improving readability under varying ambient lighting conditions. |
| Automotive Head-Up Display (HUD) | Automotive Rear Seat Entertainment (RSE) |
Use Scenario: Projection-based HUD requiring ultra-stable LED current to maintain consistent image brightness and color fidelity across temperature extremes. IC Role / Device Role / Timing Role: Constant-current sink providing regulated 30mA/50V drive to high-luminance LEDs; thermal shutdown detection prevents overheating during prolonged operation. Use Value: ±2% channel matching and –40°C to +125°C operation ensure stable luminance without recalibration over vehicle lifetime. | Use Scenario: Dual-screen RSE system where independent local dimming improves contrast while minimizing heat generation inside cabin enclosures. IC Role / Device Role / Timing Role: Backlight driver operating in hybrid PWM/current mode to balance efficiency and dimming linearity across varied content types. Use Value: Adaptive headroom control reduces power loss in DC/DC stage; standby current ≤200μA extends battery runtime during vehicle sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69654QRTWRQ1 | Same WQFN-24 package and 30mA/50V rating, but supports only 4× time-multiplexing instead of 8× | Suitable for lower-zone-count displays (e.g., basic clusters) where reduced multiplexing depth suffices | Select when system requires fewer than 128 zones per daisy chain and cost optimization is prioritized |
| TLC69668QRTWRQ1 | 60mA/50V output capability, identical 8× multiplexing and pinout - higher current per channel | Required for high-luminance LED strings or longer series configurations demanding >30mA per zone | Choose when driving high-Vf LEDs or when thermal margin must accommodate sustained 60mA operation |
Compared with TLC69654QRTWRQ1 and TLC69668QRTWRQ1, the TLC69658QRTWRQ1 delivers optimal balance of 8× multiplexing depth, 30mA/50V capability, and thermal efficiency - making it ideal for mid-to-high-tier automotive displays where zone count, contrast, and power density are jointly constrained.
Availability
TLC69658QRTWRQ1 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 TLC69658QRTWRQ1 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 ICs, with decades of leadership in high-reliability power management and interface solutions.
The TLC696x-Q1 product line is designed specifically for automotive LCD local dimming systems, integrating precision current control, daisy-chain scalability, and functional safety features to meet ASIL-B requirements in modern display architectures.
FAQ
What is the maximum LED string voltage supported by the TLC69658QRTWRQ1?
The TLC69658QRTWRQ1 supports up to 50V at its OUT0–OUT15 current-sink terminals. This allows direct connection to high-Vf LED strings or multi-LED series configurations common in automotive backlighting, eliminating the need for additional level-shifting circuitry while maintaining ±2% current accuracy across the full voltage range.
Does the TLC69658QRTWRQ1 require external components for thermal protection?
No - the TLC69658QRTWRQ1 integrates on-die thermal shutdown detection (TSD) that automatically disables all outputs when junction temperature exceeds safe limits. This self-protection feature is part of its AEC-Q100 qualification and requires no external sensors or circuitry, though proper PCB thermal design (e.g., thermal vias under the exposed pad) remains essential for sustained 30mA operation.
How does the adaptive headroom voltage control (AHVC) function in the TLC69658QRTWRQ1?
The TLC69658QRTWRQ1 implements AHVC by monitoring LED forward voltage requirements across active zones and dynamically adjusting the DC/DC converter's output via the FB pin - but only the last device in the daisy chain connects FB to the converter. This centralized feedback reduces system complexity, minimizes voltage overhead, and improves overall power efficiency compared to fixed-headroom designs.
Can the TLC69658QRTWRQ1 be used without a microcontroller?
The TLC69658QRTWRQ1 requires a host controller (e.g., MCU or SoC) to configure registers, initiate daisy-chain communication, and manage diagnostics - it has no autonomous operation mode. However, once programmed, it executes local dimming updates independently at frame rate, reducing host CPU load during active display operation.
What diagnostic capabilities does the TLC69658QRTWRQ1 provide for LED fault detection?
The TLC69658QRTWRQ1 provides per-zone LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD), with fault status reported either through UART/INT or CLK_O/SOUT interfaces. These diagnostics are register-accessible and enable real-time fault isolation without external sensing components, supporting ISO 26262-compliant system-level safety mechanisms.
TLC69658QRTWRQ1 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)
TLC69658QRTWRQ1 FAQ
1.How can I place an order for TLC69658QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69658QRTWRQ1 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 TLC69658QRTWRQ1 reliable?
The price and inventory of TLC69658QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69658QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69658QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69658QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69658QRTWRQ1?
TLC69658QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69658QRTWRQ1 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 TLC69658QRTWRQ1?
For technical support, including TLC69658QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69658QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69658QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69658QRTWRQ1 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 TLC69658QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69658QRTWRQ1?
All TLC69658QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69658QRTWRQ1, 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 TLC69658QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69658QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69658QRTWRQ1 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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