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Texas Instruments TLC69612RTWR
- Part No.:
- TLC69612RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69612RTWR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69612RTWR from Texas Instruments is a 16-channel constant-current LED driver for LCD local dimming backlight systems, delivering 60mA per channel at up to 20V compliance voltage with ±2% device-to-device and channel-to-channel current matching. It supports 2/4/8 time-multiplexing, 15-bit brightness resolution, and daisy-chain configuration for >32,000 zones in TV and monitor applications.
For engineers reviewing the TLC69612RTWR datasheet, TLC69612RTWR pinout, TLC69612RTWR application, or TLC69612RTWR equivalent, key selection criteria include its 60mA/20V output capability, adaptive headroom voltage control (AHVC), UART/interrupt and two-wire readback diagnostics, and WQFN-24 package compatibility with high-density PCB layouts.
Technical Context
The TLC69612RTWR implements time-multiplexed local dimming control synchronized with an external scan MOSFET controller (e.g., TLC696x0), enabling dynamic zone brightness adjustment across large-area displays. Its integrated SRAM stores per-channel 15-bit brightness data and supports hybrid PWM/global current control modes.
Diagnostic functionality includes per-zone LED open/short detection and thermal shutdown reporting via programmable UART/INT or CLK_O/SOUT interfaces. Adaptive headroom voltage control directly regulates the DC/DC converter using only the FB pin of the last device in the daisy chain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sinks for independent LED zone control |
| Max output current/voltage | 60mA per channel, 20V compliance - supports high-brightness LED strings with margin |
| Current accuracy | ±2% device-to-device and channel-to-channel error - ensures uniform luminance across zones |
| Brightness resolution | Up to 15-bit - enables smooth dimming without visible stepping in dark scenes |
| Daisy-chain interface | 20MHz two-wire serial (CLK_I/SIN/SOUT/CLK_O) - reduces interconnect count and EMI vs parallel buses |
| Power consumption | ≤3.5mA in normal mode; ≤200μA standby - minimizes system-level power overhead |
| Operating temperature | –40°C to +85°C - qualified for consumer and industrial display environments |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm body, 0.5mm pitch, exposed thermal pad (Pin 25), moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | 3V–5.5V main power for logic and output stages |
| GND | Ground reference | Common return for analog/digital circuits and current sinks |
| CLK_I | Input clock | Accepts master clock for synchronous daisy-chain timing |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for readback |
| CLK_O | Output clock | Propagates clock signal to next device; used with SOUT for diagnostic readout |
| FB | Feedback input | Connects only on last device in chain to regulate DC/DC output voltage |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks driving LED cathodes; each supports 60mA/20V |
| INT | Interrupt output | Active-low flag for LOD/LSD/TSD events when UART mode disabled |
| VLED | LED supply rail | External high-voltage rail connected to LED anodes; decoupled locally |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive headroom voltage control (AHVC) | Reduces VLED overhead by dynamically adjusting DC/DC output - improves system efficiency and thermal performance |
| Programmable black insertion & VRR support | Enables flicker-free variable refresh rate operation and motion blur reduction in high-end displays |
| Per-zone LED open/short and thermal shutdown detection | Provides real-time fault isolation without external sensing circuitry - simplifies BOM and improves reliability |
| Two-wire daisy-chain interface with 20MHz speed | Supports >1024 devices in series - scales to ultra-high-resolution local dimming arrays with minimal GPIO usage |
| 15-bit brightness resolution with global 8-bit MC setting | Delivers >32,000 intensity steps while allowing coarse current scaling for power optimization |
Applications
| TV Backlight Systems | Monitor Backlight Systems |
|---|---|
Use Scenario: High-dynamic-range (HDR) LCD TVs requiring precise per-zone dimming for contrast enhancement and power savings. IC Role / Device Role / Timing Role: Local dimming controller synchronizing with TLC696x0 scan MOSFETs to drive 16 LED zones per IC in time-multiplexed fashion. Use Value: Enables >100,000:1 contrast ratio and 30% lower backlight power versus global dimming, verified in 65″+ panel designs. | Use Scenario: Professional-grade monitors with factory-calibrated color gamut and low-latency gaming modes. IC Role / Device Role / Timing Role: Zone driver implementing black insertion and VRR-compatible dimming updates to eliminate motion blur and flicker. Use Value: Achieves <1ms brightness update latency and flicker-free 144Hz+ operation - critical for competitive gaming and medical imaging displays. |
| Notebook Display Backlight | Tablet Display Backlight |
Use Scenario: Thin-bezel ultrabooks requiring compact, thermally efficient local dimming for battery life extension. IC Role / Device Role / Timing Role: Compact WQFN-24 LED driver managing 16 vertical zones in edge-lit or mini-LED backlights. Use Value: 60mA/20V output and ≤3.5mA active current reduce heatsink requirements and extend runtime by ~12% in 14″ FHD+ panels. | Use Scenario: Portable tablets with auto-brightness adaptation and ambient light-responsive dimming profiles. IC Role / Device Role / Timing Role: Low-power local dimming node supporting I²C-bridged host control and fast wake-from-standby (<100μs). Use Value: Standby current ≤200μA and AHVC minimize quiescent loss - extends battery life during video playback by up to 18 minutes per charge cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69614RTWR | Same 60mA/20V output but supports 4-time multiplexing (vs. 2× for TLC69612RTWR); identical pinout and register map | Optimized for higher zone density where fewer drivers are needed per panel row | Select TLC69614RTWR when system-level timing budget allows longer multiplex cycles and board space is constrained |
| TLC69662RTWR | 60mA/50V output capability - higher compliance voltage for longer LED strings or higher forward voltage LEDs | Required for mini-LED arrays with >30V total VF or designs needing margin against VLED ripple | Choose TLC69662RTWR when LED string VF exceeds 20V or system requires extended headroom for aging compensation |
Compared with TLC69612RTWR, TLC69614RTWR offers denser time-multiplexing for reduced driver count in high-zone-count panels, while TLC69662RTWR provides 50V compliance for demanding mini-LED configurations - both share identical WQFN-24 packaging and diagnostic architecture.
Availability
TLC69612RTWR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and portable display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant WQFN packaging.
Supply support for TLC69612RTWR 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 digital signal processing technologies with over 50 years of leadership in power management and display interface solutions.
The TLC696x2/4/8 product line was engineered specifically for high-accuracy, scalable LCD local dimming in premium consumer and commercial displays - emphasizing thermal efficiency, diagnostic robustness, and seamless daisy-chain scalability.
FAQ
What is the maximum output current per channel for the TLC69612RTWR?
The TLC69612RTWR delivers up to 60mA per channel with 20V compliance voltage. This rating is specified across the full operating temperature range (–40°C to +85°C) and supports high-brightness LED strings commonly used in modern LCD backlights. Current accuracy remains within ±2% device-to-device and channel-to-channel under typical conditions.
Does the TLC69612RTWR support daisy-chaining, and how many devices can be connected?
Yes, the TLC69612RTWR supports daisy-chaining via its two-wire serial interface (CLK_I/SIN/SOUT/CLK_O) at up to 20MHz. The architecture supports up to 1024 devices in a single chain, enabling control of more than 32,000 independent local dimming zones - ideal for ultra-high-resolution TV and monitor panels.
How does the adaptive headroom voltage control (AHVC) function in the TLC69612RTWR?
The TLC69612RTWR's AHVC dynamically adjusts the VLED supply voltage by regulating the DC/DC converter through the FB pin of the final device in the daisy chain. This minimizes excess voltage across the current sinks, reducing power dissipation and heat generation - improving system efficiency by up to 18% compared to fixed-headroom designs.
What diagnostic capabilities does the TLC69612RTWR provide?
The TLC69612RTWR integrates per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). Fault status is reported either via UART/interrupt pin (INT) or two-wire output (CLK_O/SOUT), allowing real-time system-level monitoring without additional external circuitry.
Is the TLC69612RTWR pin-compatible with other members of the TLC696x2/4/8 family?
Yes, all TLC696x2/4/8 variants - including TLC69612RTWR, TLC69614RTWR, and TLC69662RTWR - share identical WQFN-24 (RTW) pinout, register mapping, and interface protocol. This enables direct substitution in existing layouts when changing output current, voltage, or multiplexing ratio requirements.
TLC69612RTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x2
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69612RTWR FAQ
1.How can I place an order for TLC69612RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69612RTWR 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 TLC69612RTWR reliable?
The price and inventory of TLC69612RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69612RTWR is usually 5 days.
3.What payment methods are accepted for TLC69612RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69612RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69612RTWR?
TLC69612RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69612RTWR 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 TLC69612RTWR?
For technical support, including TLC69612RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69612RTWR requirements.
6.How does Aetrix verify that TLC69612RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69612RTWR 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 TLC69612RTWR meets industry standards.
7.What is the process for return or replacement of TLC69612RTWR?
All TLC69612RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69612RTWR, 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 TLC69612RTWR part is unused and in its original packaging.
Return procedure for TLC69612RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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