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Texas Instruments TLC69614RTWR
- Part No.:
- TLC69614RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69614RTWR.pdf
- Description:
- 64 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:2,885
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Product details
Overview
TLC69614RTWR from Texas Instruments is a 16-channel, 4-time-multiplexing LED backlight driver for LCD local dimming systems, delivering 60mA constant current per channel at up to 20V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution. It enables high-contrast, flicker-free displays in premium TVs and monitors.
For engineers reviewing the TLC69614RTWR datasheet, TLC69614RTWR pinout, TLC69614RTWR application, or TLC69614RTWR equivalent, key selection criteria include its adaptive headroom voltage control (AHVC), UART/interrupt and two-wire diagnostic readback options, programmable black insertion, and support for variable refresh rate (VRR) without visible flicker.
Technical Context
The TLC69614RTWR implements time-multiplexed local dimming using integrated 16-channel constant current sinks with SRAM-based brightness storage, enabling precise per-zone intensity control across large-area LCD backlights. Its daisy-chain two-wire serial interface supports up to 1024 devices for >32,000 dimming zones.
It features adaptive headroom voltage control (AHVC) that directly regulates external DC/DC converters via the FB pin of the last device in chain, minimizing power loss and thermal stress. Diagnostics include per-zone LED open/short detection and thermal shutdown reporting via UART/INT or CLK_O/SOUT outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - compatible with standard logic supply rails and low-power system designs. |
| Output Current | 60mA per channel - supports high-brightness LED strings in 4× multiplexed local dimming architecture. |
| Compliance Voltage | 20V - sufficient for driving typical white LED strings (e.g., 5–6 LEDs in series at ~3.2V each). |
| Current Matching | ±2% (typ.) device-to-device and channel-to-channel - ensures uniform luminance across dimming zones without software calibration. |
| Brightness Resolution | Up to 15-bit - enables smooth gradation and eliminates contouring artifacts in HDR content. |
| Interface Speed | Up to 20MHz daisy-chain data rate - allows fast frame updates for real-time local dimming in 120Hz+ displays. |
| Power Consumption | ≤3.5mA (normal mode), ≤200μA (standby) - reduces system-level power budget and thermal load. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, 0.5mm pitch, exposed thermal pad (Pin 25). RoHS-compliant, NIPDAU lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail (3V–5.5V); decoupling required near pin for noise suppression. |
| GND | Ground reference | Common return path for analog/digital circuits and thermal pad connection point. |
| CLK_I | Input clock | Master clock input for synchronous serial communication; accepts 1.8V/3.3V logic levels. |
| SIN | Serial data input | Configures device registers and brightness values; daisy-chained to previous device's SOUT. |
| SOUT | Serial data output | Forwarded data stream to next device; enables scalable multi-chip configurations. |
| CLK_O | Output clock | Re-driven clock for downstream devices; maintains timing integrity across long chains. |
| FB | Feedback input | Connects only to last device's FB pin to regulate DC/DC converter output voltage dynamically. |
| INT | Interrupt output | Active-low signal indicating LOD/LSD/TSD fault conditions; supports polled or interrupt-driven diagnostics. |
| OUT0–OUT15 | Constant-current sinks | 16 high-side current outputs; each drives one LED string segment in multiplexed local dimming topology. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power dissipation by dynamically adjusting DC/DC output to match minimum required LED forward voltage across all active zones. |
| Programmable Black Insertion | Inserts controlled dark frames between video frames to enhance perceived contrast and reduce motion blur in fast-moving content. |
| Variable Refresh Rate (VRR) Support | Maintains stable dimming behavior during dynamic frame-rate changes (e.g., gaming), eliminating flicker and brightness instability. |
| Per-Zone LED Open/Short Detection | Identifies failed LED strings in real time without external sensing circuitry, enabling fail-safe display operation and predictive maintenance. |
| Dual Diagnostic Readback Modes | UART/INT and CLK_O/SOUT interfaces allow flexible integration into host MCU firmware or dedicated monitor ICs based on system architecture. |
Applications
| High-End TV Backlight | Professional Monitor |
|---|---|
|
Use Scenario: 85-inch 4K/120Hz HDR TV with 1,000+ local dimming zones. IC Role / Device Role / Timing Role: Primary local dimming controller managing 16 LED strings per TLC69614RTWR in 4× time-multiplexed configuration. Use Value: Enables >1,000,000:1 contrast ratio and precise per-frame luminance mapping for Dolby Vision content. |
Use Scenario: 32-inch 4K medical imaging monitor requiring flicker-free, color-accurate backlighting. IC Role / Device Role / Timing Role: Constant-current sink array synchronized to graphics controller VSYNC for zero-latency brightness updates. Use Value: Eliminates temporal artifacts during surgical image review and supports DICOM GSDF compliance. |
| Gaming Laptop Display | Digital Signage Kiosk |
|
Use Scenario: 16-inch OLED-competing mini-LED laptop panel with adaptive sync and low persistence modes. IC Role / Device Role / Timing Role: Local dimming driver operating in hybrid PWM/global current mode to balance efficiency and grayscale linearity. Use Value: Delivers <1ms black-to-black response and sustained 500 nits peak brightness under battery-limited thermal envelope. |
Use Scenario: Outdoor-facing 55-inch retail kiosk exposed to wide ambient temperature swings (-20°C to 70°C). IC Role / Device Role / Timing Role: Thermally robust LED driver with built-in TSD detection and auto-throttling for continuous 24/7 operation. Use Value: Prevents catastrophic LED failure due to thermal runaway and enables graceful brightness derating during high-temperature events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69612RTWR | 30mA per channel (vs. 60mA), same 20V compliance and 4× multiplexing. | Targeted at lower-power LED arrays or higher-string-count configurations where per-channel current can be reduced. | Select when total board power budget or thermal constraints require lower per-channel drive capability. |
| TLC69618RTWR | Same 60mA/20V rating but supports 8× time-multiplexing (vs. 4×), halving required channel count per zone. | Optimized for ultra-high-zone-count systems (e.g., >2,000 zones) where PCB routing density is critical. | Choose when minimizing interconnect complexity and maximizing zone scalability outweighs minor latency increase from deeper multiplexing. |
Compared with TLC69612RTWR and TLC69618RTWR, the TLC69614RTWR provides the optimal balance of per-channel drive strength, multiplexing depth, and diagnostic flexibility for mainstream premium TV and monitor designs requiring 500–2,000 local dimming zones.
Availability
TLC69614RTWR is available at Aetrix Electronics and suitable for high-end TV backlighting, professional monitor design, and gaming laptop display development requiring stable component supply and full production traceability.
Supply support for TLC69614RTWR 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in display interface and backlight solutions.
The TLC696x2/4/8 family is designed specifically for high-performance LCD local dimming systems, targeting seamless integration with TI's TPS65136 and other DC/DC controllers to deliver end-to-end power-efficient display subsystems.
FAQ
What is the maximum number of TLC69614RTWR devices supported in a daisy-chain configuration?
The TLC69614RTWR supports up to 1024 devices in a daisy-chain topology via its two-wire serial interface, enabling control of more than 32,000 independent local dimming zones. This scalability is achieved through deterministic clock forwarding (CLK_O) and data pass-through (SOUT), with no additional host GPIO overhead beyond the initial CLK_I and SIN lines.
Does the TLC69614RTWR require an external microcontroller to implement black insertion or VRR features?
No - the TLC69614RTWR integrates programmable black insertion and VRR support directly in hardware. These functions are configured via internal registers and executed autonomously without MCU intervention, ensuring deterministic timing and eliminating software latency that could cause visible artifacts in high-refresh-rate displays.
How does the adaptive headroom voltage control (AHVC) function in the TLC69614RTWR?
AHVC in the TLC69614RTWR dynamically adjusts the DC/DC converter output voltage by monitoring the highest forward voltage among active LED strings in each time slot. Only the FB pin of the final device in the daisy chain connects to the DC/DC feedback node, simplifying layout while minimizing power loss and heat generation across the entire backlight system.
Can the TLC69614RTWR detect both open-circuit and short-circuit LED faults?
Yes - the TLC69614RTWR provides per-channel LED open detection (LOD) and LED short detection (LSD) with dedicated status flags. Faults are reported either through the INT pin (active-low pulse) or via UART/serial readback, allowing rapid identification and isolation of failed LED strings without external sensing components.
What package variants are available for the TLC69614RTWR, and what is the thermal pad configuration?
The TLC69614RTWR is offered exclusively in the WQFN-24 (RTW) package: 4mm × 4mm body, 0.5mm pitch, 0.8mm max height, with an exposed thermal pad (Pin 25) centered on the bottom surface. The pad must be soldered to a thermally optimized PCB copper area to ensure reliable operation at full 60mA/channel load across the -40°C to +85°C temperature range.
TLC69614RTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x4
- 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)
TLC69614RTWR FAQ
1.How can I place an order for TLC69614RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69614RTWR 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 TLC69614RTWR reliable?
The price and inventory of TLC69614RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69614RTWR is usually 5 days.
3.What payment methods are accepted for TLC69614RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69614RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69614RTWR?
TLC69614RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69614RTWR 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 TLC69614RTWR?
For technical support, including TLC69614RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69614RTWR requirements.
6.How does Aetrix verify that TLC69614RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69614RTWR 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 TLC69614RTWR meets industry standards.
7.What is the process for return or replacement of TLC69614RTWR?
All TLC69614RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69614RTWR, 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 TLC69614RTWR part is unused and in its original packaging.
Return procedure for TLC69614RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69614RTWR Tags
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