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Texas Instruments TLC69662YBHR
- Part No.:
- TLC69662YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69662YBHR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69662YBHR from Texas Instruments is a 16-channel constant-current LED driver optimized for LCD local dimming backlight systems, delivering 60mA per channel at up to 50V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution in hybrid PWM control mode.
For engineers reviewing the TLC69662YBHR datasheet, TLC69662YBHR pinout, TLC69662YBHR application, or TLC69662YBHR equivalent, this device supports high-density daisy-chained configurations (up to 1024 devices), adaptive headroom voltage control (AHVC) for DC/DC optimization, and integrated diagnostics including LED open/short detection and thermal shutdown reporting via UART/INT or SOUT/CLK_O interfaces.
Technical Context
The TLC69662YBHR implements time-multiplexed local dimming with 2/4/8× scan ratio compatibility via external TLC696x0 scan MOSFET controller, enabling precise per-zone luminance control across large-area displays. Its 16-channel architecture integrates dedicated SRAM for brightness storage per output.
It features programmable interface drive strength and 4-phase-shifting EMI reduction schemes, alongside display-quality enhancements including minimum brightness update latency, black insertion, and variable refresh rate (VRR) support without flicker-enabled by synchronized daisy-chain timing and internal diagnostic flag registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - Supports direct connection to standard logic supply rails without level-shifting. |
| Output Current / Voltage | 60mA / 50V - Enables driving high-Vf LED strings or longer series chains in premium TV/monitor backlights. |
| Current Matching | ±2% (typ.) device-to-device and channel-to-channel - Ensures uniform zone luminance without software calibration. |
| Brightness Resolution | Up to 15-bit - Provides >32,768 discrete dimming levels for smooth grayscale transitions and HDR tone mapping. |
| Data Rate | Up to 20MHz - Allows rapid configuration updates across long daisy chains (e.g., 32k zones) within single frame time. |
| Power Consumption | ≤3.5mA (normal), ≤200μA (standby) - Minimizes system-level power overhead in always-on display subsystems. |
| Diagnostics | LED open/short detection per zone + thermal shutdown - Enables real-time fault isolation without host CPU polling overhead. |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm, 0.4mm pitch, ball grid array with exposed thermal pad (Ball 25). Compatible with fine-pitch PCB assembly and high-density backlight module layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail for logic and output drivers; decoupling required near package. |
| GND | Ground reference | Common return for all analog/digital circuits; connects to thermal pad for thermal dissipation. |
| CLK_I | Serial clock input | Asynchronous master clock for daisy-chain data latching; compatible with 1.8V/3.3V logic. |
| SIN | Serial data input | Accepts 24-bit command frames (address + data); propagates unchanged to next device's SIN. |
| SOUT | Serial data output | Readback path for diagnostic flags (LOD/LSD/TSD) or register values in UART/INT mode. |
| CLK_O | Serial clock output | Re-driven CLK_I signal for downstream device synchronization; maintains timing integrity in long chains. |
| FB | Feedback input | Connects only to last device in chain to regulate DC/DC converter output voltage via AHVC scheme. |
| OUT0–OUT15 | Constant-current sinks | 16 independent high-side current sources; each drives LED cathodes to GND or VLED return. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates DC/DC output to match worst-case LED string Vf + margin, reducing power loss by up to 30% vs fixed-headroom designs. |
| Hybrid PWM / MC Dimming | Combines 8-bit global max-current (MC) setting with 15-bit PWM depth for extended dynamic range and reduced low-brightness quantization noise. |
| Programmable Black Insertion | Inserts configurable dark frames between active video frames to enhance perceived contrast ratio in fast-motion content. |
| Variable Refresh Rate (VRR) Support | Maintains stable dimming behavior across refresh rates (e.g., 48–144Hz) without visible flicker or brightness shift. |
| 4-Phase-Shifting EMI Scheme | Staggered internal switching reduces peak radiated emissions by spreading energy across four timing domains. |
Applications
| TV Local Dimming System | Professional Monitor Backlight |
|---|---|
Use Scenario: High-end 85-inch UHD TV with 1000+ local dimming zones for HDR10+ playback. IC Role / Device Role / Timing Role: Zone-level current sink controlling individual LED strings in 8× time-multiplexed configuration with TLC696x0 scan controller. Use Value: Delivers 60mA/50V per channel to sustain peak brightness in small highlight zones while maintaining <±2% uniformity across full screen. |
Use Scenario: Color-critical 32-inch 4K medical imaging monitor requiring flicker-free, VRR-compatible backlighting. IC Role / Device Role / Timing Role: Constant-current driver implementing black insertion and latency-minimized brightness updates synchronized to GPU frame delivery. Use Value: Eliminates motion blur artifacts and enables seamless 60–120Hz refresh transitions without perceptible brightness modulation. |
| Notebook Display Subsystem | Tablet HDR Backlight Module |
Use Scenario: Thin-bezel 16-inch laptop display with edge-lit local dimming using dual TLC69662YBHR daisy chain. IC Role / Device Role / Timing Role: Compact DSBGA-24 driver enabling high channel density in constrained board area; supports 20MHz daisy-chain throughput. Use Value: Achieves >1000 nits peak brightness in localized regions while maintaining battery-efficient ≤3.5mA ICC in active mode. |
Use Scenario: 12.9-inch tablet with full-array local dimming and Dolby Vision support. IC Role / Device Role / Timing Role: Integrated diagnostic reporting (UART/INT) enables real-time LED health monitoring without additional I²C sensors. Use Value: Detects open-circuit failures per zone during boot and runtime, allowing graceful degradation instead of full backlight failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69662RTWR | Same electrical specs but in WQFN-24 (4mm × 4mm) package; higher thermal resistance (θJA ≈ 50°C/W vs DSBGA's ~75°C/W). | Preferred for prototyping or lower-power modules where PCB reflow compatibility with larger QFN footprints is required. | Select TLC69662RTWR when board layout accommodates 4mm × 4mm footprint and thermal management uses external copper pour. |
| TLC69664YBHR | 60mA/50V output capability with 4× time-multiplexing support (vs 2× for TLC69662YBHR); identical DSBGA-24 package and pinout. | Used in systems requiring deeper scan multiplexing for ultra-high zone count (>2000 zones) with same physical board space. | Choose TLC69664YBHR when integrating with TLC696x0 controllers configured for 4× scan mode and needing identical mechanical fit. |
Compared with TLC69662RTWR, the TLC69662YBHR offers superior thermal performance in ultra-thin backlight modules due to its smaller DSBGA footprint and lower θJA, while TLC69664YBHR extends scan flexibility without changing board layout-making both viable alternatives depending on thermal, density, and controller configuration requirements.
Availability
TLC69662YBHR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and portable HDR display modules requiring stable component supply, RoHS-compliant packaging, and production-ready tape-and-reel logistics (3000 pcs/reel, DSBGA-24, YBH package).
Supply support for TLC69662YBHR 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 over 90 years of innovation in high-reliability electronic components.
The TLC696x2/4/8 family is designed specifically for advanced LCD local dimming backlight systems, targeting high-dynamic-range (HDR) displays in consumer, medical, and professional markets where precision current matching and low-latency zone control are critical.
FAQ
What is the maximum LED string voltage supported by the TLC69662YBHR?
The TLC69662YBHR supports up to 50V compliance voltage per output channel, enabling direct drive of multi-LED strings with forward voltages up to 48V at 60mA. This allows integration with high-efficiency white LEDs or RGB combinations without external boost circuitry in many TV and monitor backlight topologies. The 50V rating is confirmed in the official datasheet SLVSHB6 under "Maximum Output Current / Voltage" for the TLC69662 variant.
Does the TLC69662YBHR require an external scan controller?
Yes, the TLC69662YBHR requires an external TLC696x0 scan MOSFET controller to implement time-multiplexed local dimming. It provides 16 constant-current sinks but relies on the TLC696x0 to handle high-voltage switching of LED anodes in 2×, 4×, or 8× multiplexed configurations. This division of function enables scalable zone counts while maintaining low-power, high-precision current regulation in the TLC69662YBHR itself.
How does the Adaptive Headroom Voltage Control (AHVC) work in the TLC69662YBHR?
AHVC in the TLC69662YBHR dynamically adjusts the DC/DC converter output voltage by feeding back the highest required Vf among all active LED strings in the daisy chain. Only the FB pin of the last device in the chain connects to the DC/DC feedback node, simplifying layout and minimizing headroom overhead. This reduces power dissipation in the LED drivers and improves overall system efficiency-especially beneficial in large-area, high-brightness displays where thermal management is critical.
Can the TLC69662YBHR be used in automotive applications?
The standard TLC69662YBHR is rated for –40°C to +85°C operation and is not AEC-Q100 qualified. For automotive use, TI offers the pin-compatible TLC69662-Q1 variant, which undergoes extended reliability testing and meets automotive temperature and qualification requirements. Designers must select TLC69662-Q1 explicitly for infotainment or instrument cluster backlighting in vehicles; the TLC69662YBHR is intended for industrial and consumer display applications only.
What diagnostic functions are supported by the TLC69662YBHR?
The TLC69662YBHR integrates three hardware-diagnostic flags: LED Open Detection (LOD), LED Short Detection (LSD), and Thermal Shutdown Detection (TSD). These can be read back either through UART/INT interface (using dedicated INT pin and UART protocol) or via two-wire SOUT/CLK_O output. Each flag corresponds to a specific fault condition per device, enabling rapid system-level fault isolation without continuous host polling-critical for fail-safe display subsystems.
TLC69662YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-BGA, DSBGA
- 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-DSBGA (1.58x2.43)
TLC69662YBHR FAQ
1.How can I place an order for TLC69662YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69662YBHR 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 TLC69662YBHR reliable?
The price and inventory of TLC69662YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69662YBHR is usually 5 days.
3.What payment methods are accepted for TLC69662YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69662YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69662YBHR?
TLC69662YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69662YBHR 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 TLC69662YBHR?
For technical support, including TLC69662YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69662YBHR requirements.
6.How does Aetrix verify that TLC69662YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69662YBHR 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 TLC69662YBHR meets industry standards.
7.What is the process for return or replacement of TLC69662YBHR?
All TLC69662YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69662YBHR, 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 TLC69662YBHR part is unused and in its original packaging.
Return procedure for TLC69662YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69662YBHR Tags
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