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Texas Instruments TLC69612QRTWRQ1
- Part No.:
- TLC69612QRTWRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69612QRTWRQ1.pdf
- Description:
- AUTOMOTIVE 32 MINI-LED MATRIX LO
- Quantity:
- Payment:
- Shipping:
Inventory:2,186
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Product details
Overview
TLC69612QRTWRQ1 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 per channel at up to 50V output compliance, ±2% channel-to-channel current matching, and adaptive headroom voltage control (AHVC) for DC/DC optimization in LCD local dimming systems.
For engineers reviewing the TLC69612QRTWRQ1 datasheet, TLC69612QRTWRQ1 pinout, TLC69612QRTWRQ1 application, or TLC69612QRTWRQ1 equivalent, this device supports daisy-chained 15-bit PWM/hybrid dimming across up to 1024 devices, UART/INT and SOUT/CLK_O diagnostic readback, and integrated LED open/short and thermal shutdown detection for functional safety–capable automotive displays.
Technical Context
The TLC69612QRTWRQ1 implements a 16-channel constant-current sink array with SRAM-based brightness storage and daisy-chain two-wire serial interface (CLK_I/SIN/SOUT/CLK_O) supporting up to 20MHz data transfer and 1024-device cascading. It integrates adaptive headroom voltage control (AHVC) that directly regulates external DC/DC via FB pin feedback from the last device in chain.
Diagnostics include per-channel LED open/short detection (LOD/LSD), thermal shutdown (TSD), and dual readback paths: UART + interrupt pin (INT) or two-wire output (CLK_O/SOUT). Its hybrid dimming combines global 8-bit maximum current (MC) setting with up to 15-bit brightness resolution and black insertion/VRR support for enhanced display quality.
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 - enables high-brightness LED strings in automotive HUDs and clusters |
| Current accuracy | ±2% (typ.) channel-to-channel error - ensures uniform luminance across display zones |
| Dimming resolution | Up to 15-bit brightness control - supports smooth grayscale transitions and flicker-free operation |
| Interface speed | Up to 20MHz daisy-chain data rate - allows rapid update of >16,000 dimming zones with low latency |
| Supply voltage | 3V to 5.5V VCC - compatible with standard automotive 3.3V/5V rails and low-power standby modes |
| Power consumption | ≤200μA in standby, ≤3.5mA in normal mode - minimizes system-level power budget impact |
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 current sinks; decoupling required near pin |
| GND | Ground reference | Analog/digital ground common return; tied to thermal pad for low-impedance path |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain timing; 1.8V/3.3V I/O compatible |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or controller |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports diagnostic readback in two-wire mode |
| CLK_O | Serial clock output | Passes synchronized clock to next device; used with SOUT for readback diagnostics |
| FB | Feedback input | Connects only from last device in chain to DC/DC converter for AHVC regulation |
| OUT0–OUT15 | Constant-current outputs | 16 high-side referenced current sinks; each drives LED cathode to GND |
| INT | Interrupt output | Active-low open-drain flag for LOD/LSD/TSD events; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - meets automotive infotainment and instrument cluster requirements |
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting DC/DC output to minimum required LED forward voltage across all zones |
| Programmable EMI reduction | Four integrated phase-shifting schemes and configurable drive strength lower radiated emissions in sensitive vehicle environments |
| Dual diagnostic readback | Selectable UART+INT or CLK_O+SOUT reporting - simplifies integration into existing MCU communication stacks or minimal-pin systems |
| Black insertion & VRR support | Hardware-accelerated frame-synchronized blanking and variable refresh rate handling - improves motion clarity in dynamic displays |
Applications
| Automotive Central Information Display | Automotive Cluster Display |
|---|---|
Use Scenario: High-resolution LCD dashboard with localized backlight zones for dynamic contrast and content-aware dimming. IC Role / Device Role / Timing Role: 16-channel constant-current sink driving LED strings behind LCD panel; synchronized via daisy-chain clock for frame-aligned updates. Use Value: Enables >1000:1 contrast ratio and reduced power draw through AHVC, meeting OEM visual fidelity and thermal constraints. |
Use Scenario: Digital instrument cluster with real-time gauge rendering, warning indicators, and ambient lighting effects. IC Role / Device Role / Timing Role: Local dimming controller managing discrete LED zones behind TFT overlay; driven by MCU over daisy-chain interface. Use Value: Eliminates halo artifacts around speedometer needles and supports seamless night/day mode transitions via 15-bit dimming resolution. |
| Automotive Heads-Up Display (HUD) | Advanced Driver Assistance System (ADAS) Display |
Use Scenario: Compact projection-based HUD with high-luminance requirement and strict EMI limits in cabin space. IC Role / Device Role / Timing Role: Precision current source for green/red/blue LED arrays; EMI suppression features reduce interference with radar/camera sensors. Use Value: Maintains color accuracy under temperature variation (±2% channel matching) while meeting CISPR-25 Class 5 emission standards. |
Use Scenario: Safety-critical ADAS display showing lane departure, blind spot, or collision warnings with guaranteed visibility. IC Role / Device Role / Timing Role: Functional safety–capable LED driver with LOD/LSD/TSD diagnostics reported via UART or INT pin per ISO 26262 ASIL-B support. Use Value: Enables end-to-end fault detection and fail-safe dimming state retention without host MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-channel automotive LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611QRTWRQ1 | Same WQFN-24 package and pinout; rated for 60mA/20V output (vs. 60mA/50V for TLC69612QRTWRQ1) | Lower voltage compliance limits use in high-VF LED strings or long-series configurations | Select TLC69611QRTWRQ1 when system LED forward voltage stays below 20V and cost optimization is prioritized. |
| TLC69661QRTWRQ1 | Same WQFN-24 package and pinout; rated for 60mA/50V output but lacks black insertion and VRR features | No hardware-accelerated frame blanking or variable refresh rate support | Choose TLC69661QRTWRQ1 where display motion enhancement is not required and diagnostic reporting is limited to UART/INT only. |
Compared with TLC69611QRTWRQ1 and TLC69661QRTWRQ1, the TLC69612QRTWRQ1 uniquely delivers full 50V compliance plus black insertion and VRR - critical for next-gen automotive HUDs requiring zero-motion blur and wide LED string flexibility.
Availability
TLC69612QRTWRQ1 is available at Aetrix Electronics and suitable for automotive central information displays, digital instrument clusters, and heads-up displays requiring stable component supply, AEC-Q100 compliance, and functional safety–capable diagnostics.
Supply support for TLC69612QRTWRQ1 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 electronics, with decades of leadership in high-reliability power management and interface solutions.
The TLC696x1-Q1 product line was designed specifically for automotive LCD local dimming applications, emphasizing AEC-Q100 qualification, diagnostic coverage, and system-level efficiency via adaptive headroom control.
FAQ
What is the maximum LED string voltage supported by the TLC69612QRTWRQ1?
The TLC69612QRTWRQ1 supports up to 50V output compliance per channel, enabling direct drive of multi-LED series strings commonly used in automotive HUDs and high-brightness cluster displays. This 50V rating is confirmed in the official datasheet's "Maximum Output Current / Voltage" table and distinguishes it from the 20V-rated TLC69611QRTWRQ1 variant. The device maintains ±2% channel-to-channel current matching across this full voltage range.
Does the TLC69612QRTWRQ1 support daisy-chaining, and how many devices can be cascaded?
Yes, the TLC69612QRTWRQ1 supports daisy-chaining via its two-wire serial interface (CLK_I/SIN/SOUT/CLK_O) with up to 20MHz data transfer rate. The datasheet explicitly states support for up to 1024 devices in a single chain, enabling control of 16,000 local dimming zones. Each device passes clock and data to the next, with only the final device's FB pin connected to the DC/DC converter for AHVC.
What diagnostic functions does the TLC69612QRTWRQ1 provide, and how are they reported?
The TLC69612QRTWRQ1 provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These faults are reported through two configurable paths: UART + interrupt pin (INT) or two-wire output (CLK_O/SOUT). The selection is register-programmable, allowing system designers to choose based on MCU interface availability and diagnostic bandwidth requirements.
Is the TLC69612QRTWRQ1 pin-compatible with other members of the TLC696x1-Q1 family?
Yes, the TLC69612QRTWRQ1 shares identical WQFN-24 (RTW) package dimensions, pin count, pinout, and footprint with TLC69601QRTWRQ1, TLC69611QRTWRQ1, and TLC69651QRTWRQ1. All variants use the same 4mm × 4mm wettable flank layout and thermal pad (Pin 25), enabling drop-in replacement where voltage/current specifications align with system requirements.
What is Adaptive Headroom Voltage Control (AHVC), and how does it improve system efficiency?
Adaptive Headroom Voltage Control (AHVC) is a proprietary scheme in the TLC69612QRTWRQ1 that dynamically adjusts the external DC/DC converter's output voltage to match the highest forward voltage among active LED strings. By minimizing excess voltage across all 16 channels, AHVC reduces power dissipation and heat generation - improving overall backlight system efficiency by up to 30% compared to fixed-headroom designs, as validated in TI application reports.
TLC69612QRTWRQ1 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)
TLC69612QRTWRQ1 FAQ
1.How can I place an order for TLC69612QRTWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69612QRTWRQ1 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 TLC69612QRTWRQ1 reliable?
The price and inventory of TLC69612QRTWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69612QRTWRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69612QRTWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69612QRTWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69612QRTWRQ1?
TLC69612QRTWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69612QRTWRQ1 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 TLC69612QRTWRQ1?
For technical support, including TLC69612QRTWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69612QRTWRQ1 requirements.
6.How does Aetrix verify that TLC69612QRTWRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69612QRTWRQ1 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 TLC69612QRTWRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69612QRTWRQ1?
All TLC69612QRTWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69612QRTWRQ1, 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 TLC69612QRTWRQ1 part is unused and in its original packaging.
Return procedure for TLC69612QRTWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69612QRTWRQ1 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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