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Texas Instruments TLC69662RTWR
- Part No.:
- TLC69662RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69662RTWR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69662RTWR from Texas Instruments is a 16-channel, 60mA/50V constant-current LED driver optimized for LCD local dimming backlight systems. It supports 2/4/8 time-multiplexing, delivers ±2% device-to-device and channel-to-channel current matching, and integrates adaptive headroom voltage control (AHVC) for system-level DC/DC optimization in high-resolution TV and monitor displays.
For engineers reviewing the TLC69662RTWR datasheet, TLC69662RTWR pinout, TLC69662RTWR application, or TLC69662RTWR equivalent, key selection criteria include its 60mA per channel capability at up to 50V compliance voltage, 15-bit brightness resolution with PWM/hybrid dimming, daisy-chain interface up to 20MHz, and integrated diagnostics including LED open/short and thermal shutdown detection.
Technical Context
The TLC69662RTWR implements a time-multiplexed local dimming architecture where each of its 16 constant-current sinks drives one LED zone, with SRAM-based brightness storage enabling independent per-zone control. Its AHVC scheme dynamically adjusts the VLED supply by monitoring the FB pin from the last device in the daisy chain, minimizing power loss across the entire chain.
Diagnostics are implemented via two configurable readback options: UART/interrupt (INT) or two-wire serial output (SOUT/CLK_O), reporting LED open (LOD), LED short (LSD), and thermal shutdown (TSD) flags. The device operates from 3V–5.5V VCC and supports 1.8V/3.3V I/O logic levels for seamless integration with modern display controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 constant-current sinks - enables fine-grained local dimming zones per IC |
| Max Output Current / Voltage | 60mA per channel at up to 50V compliance - supports high-brightness, high-Vf LED strings |
| Current Matching Accuracy | ±2% (typ.) device-to-device and channel-to-channel - ensures uniform luminance across zones |
| Brightness Resolution | Up to 15-bit - allows ultra-fine dimming control for HDR content without visible stepping |
| Data Rate | Up to 20MHz daisy-chain interface - reduces frame update latency for variable refresh rate (VRR) |
| Power Consumption | ≤3.5mA in normal mode; ≤200μA in standby - minimizes idle power in always-on display systems |
| Diagnostic Reporting | LED open/short detection per zone + thermal shutdown - enables real-time fault isolation without external circuitry |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm body, 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 | 3V–5.5V main power rail for internal logic and bias circuits |
| GND | Ground reference | Common return path for all analog/digital functions and current sinks |
| CLK_I | Input clock | Accepts master clock signal (up to 20MHz) to synchronize daisy-chain data transfer |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or controller |
| SOUT | Serial data output | Passes processed or diagnostic data downstream in daisy-chain topology |
| CLK_O | Output clock | Drives clock signal to next device; supports synchronized multi-chip timing |
| FB | Feedback input | Connects only to last device's FB pin to regulate VLED supply via external DC/DC converter |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks; each drives one LED string with 60mA/50V capability |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events when UART mode is disabled |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directs external DC/DC converter via single FB pin from last device - eliminates per-device VLED regulation overhead |
| Programmable Black Insertion & VRR Support | Enables flicker-free variable refresh rate operation by synchronizing LED blanking with panel timing |
| Minimum Brightness Update Latency | Reduces frame-to-frame dimming delay - critical for motion-smooth HDR video playback |
| Two-Wire Daisy Chain Interface | Eliminates parallel bus routing; supports >32,000 zones via 1024-device chain with minimal PCB trace count |
| Configurable Diagnostic Readback | UART/INT or SOUT/CLK_O reporting - allows flexible integration with host MCU or dedicated fault manager |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
|
Use Scenario: High-end 4K/8K LCD TVs requiring >1000 local dimming zones for HDR contrast enhancement. IC Role / Device Role / Timing Role: Primary LED current sink driver in time-multiplexed architecture, managing 16 zones per chip across cascaded chains. Use Value: 60mA/50V output capability supports high-luminance edge-lit or full-array backlights; ±2% matching preserves uniform black levels. |
Use Scenario: Professional-grade monitors with factory-calibrated grayscale and wide color gamut. IC Role / Device Role / Timing Role: Zone-specific brightness controller synchronized to panel timing via CLK_I/CLK_O for zero-latency updates. Use Value: 15-bit dimming resolution prevents contouring artifacts; black insertion feature eliminates motion blur during fast transitions. |
| Notebook Display Backlight | Tablet HDR Backlight System |
|
Use Scenario: Thin-bezel ultrabooks requiring compact, thermally efficient local dimming solutions. IC Role / Device Role / Timing Role: Integrated current sink and diagnostic node in space-constrained layout; uses WQFN-24 package (4mm × 4mm). Use Value: ≤3.5mA operating current and AHVC reduce thermal load; INT pin enables direct MCU interrupt on LED fault. |
Use Scenario: Premium tablets supporting Dolby Vision with dynamic metadata-driven dimming. IC Role / Device Role / Timing Role: Local dimming engine receiving real-time tone-mapping data over daisy chain for per-frame zone adjustment. Use Value: 20MHz interface ensures sub-millisecond update latency; programmable VRR alignment maintains flicker-free playback at 60–120Hz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69664RTWR | Same 60mA/50V rating but supports 4× time-multiplexing (vs. 2× for TLC69662RTWR) | Targets higher zone density per frame; requires compatible controller timing | Select TLC69664RTWR when system design mandates 4× multiplexing for reduced frame latency |
| TLC69668RTWR | Same 60mA/50V rating but supports 8× time-multiplexing (vs. 2× for TLC69662RTWR) | Optimized for ultra-high-resolution panels with >2000 zones; increases controller bandwidth demand | Choose TLC69668RTWR only if 8× multiplexing is required to meet panel timing constraints |
Compared with TLC69664RTWR and TLC69668RTWR, the TLC69662RTWR provides the lowest time-multiplexing ratio (2×), delivering maximum per-zone current stability and simplest timing integration - ideal for mainstream TV and monitor designs where zone count and update speed balance is prioritized over extreme multiplexing density.
Availability
TLC69662RTWR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and notebook display modules requiring stable component supply, long-term lifecycle support, and automotive-qualified alternatives (TLC69662-Q1) for safety-critical implementations.
Supply support for TLC69662RTWR 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 digital signal technologies, with decades of expertise in display power and timing solutions.
The TLC696x2/4/8 product line was engineered specifically for high-performance LCD local dimming, combining precision current regulation, scalable daisy-chain architecture, and integrated display-quality enhancements like black insertion and VRR synchronization.
FAQ
What is the maximum output voltage compliance of the TLC69662RTWR?
The TLC69662RTWR supports a maximum output voltage compliance of 50V per channel. This enables driving longer LED strings or higher-forward-voltage LEDs commonly used in full-array local dimming backlights for premium TVs and monitors. The 50V rating is specified under continuous operation at rated current and ambient temperature conditions.
Does the TLC69662RTWR require an external DC/DC converter for VLED supply?
Yes, the TLC69662RTWR requires an external DC/DC converter to generate the VLED supply. Its Adaptive Headroom Voltage Control (AHVC) function regulates this converter via the FB pin - but only the FB pin of the last device in the daisy chain must be connected, simplifying system-level feedback design and reducing component count.
How many TLC69662RTWR devices can be connected in a daisy chain?
Up to 1024 TLC69662RTWR devices can be daisy-chained using the CLK_I/SIN/SOUT/CLK_O interface. This supports more than 32,000 local dimming zones (16 × 1024), making it suitable for ultra-high-resolution displays requiring fine-grained luminance control across large panel areas.
What diagnostic functions does the TLC69662RTWR provide?
The TLC69662RTWR provides per-zone LED open detection (LOD), LED short detection (LSD), and device-level thermal shutdown detection (TSD). These flags are reported either through UART communication or via the INT pin and SOUT/CLK_O serial output, enabling rapid fault identification without external sensing circuitry.
Is the TLC69662RTWR pin-compatible with other members of the TLC696x2/4/8 family?
Yes, all TLC696x2/4/8 variants-including TLC69662RTWR, TLC69664RTWR, and TLC69668RTWR-share identical WQFN-24 (RTW) pinout and package dimensions. This allows hardware reuse across different time-multiplexing configurations, provided firmware and timing parameters are updated to match the selected variant's multiplexing ratio.
TLC69662RTWR 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:
- 50V
- 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)
TLC69662RTWR FAQ
1.How can I place an order for TLC69662RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69662RTWR 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 TLC69662RTWR reliable?
The price and inventory of TLC69662RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69662RTWR is usually 5 days.
3.What payment methods are accepted for TLC69662RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69662RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69662RTWR?
TLC69662RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69662RTWR 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 TLC69662RTWR?
For technical support, including TLC69662RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69662RTWR requirements.
6.How does Aetrix verify that TLC69662RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69662RTWR 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 TLC69662RTWR meets industry standards.
7.What is the process for return or replacement of TLC69662RTWR?
All TLC69662RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69662RTWR, 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 TLC69662RTWR part is unused and in its original packaging.
Return procedure for TLC69662RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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