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Texas Instruments TLC69652RTWR
- Part No.:
- TLC69652RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69652RTWR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69652RTWR from Texas Instruments is a 16-channel constant-current LED driver for LCD local dimming backlight systems, supporting 2-time multiplexing with 30mA output current per channel at up to 50V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and adaptive headroom voltage control (AHVC) for high-efficiency DC/DC integration in TV and monitor backlight units.
For engineers reviewing the TLC69652RTWR datasheet, TLC69652RTWR pinout, TLC69652RTWR application, or TLC69652RTWR equivalent, this page delivers verified specifications, package-validated pin functions, real-world display quality features (black insertion, VRR, low latency), diagnostic reporting options (UART/INT or SOUT/CLK_O), and confirmed alternatives for local dimming system design.
Technical Context
The TLC69652RTWR implements time-multiplexed local dimming using integrated 16-channel constant-current sinks with SRAM-based brightness storage, daisy-chained via high-speed two-wire serial interface (up to 20MHz) compatible with 1.8V/3.3V I/O levels. It supports flexible dimming control including global 8-bit maximum current setting and up to 15-bit brightness resolution.
Its adaptive headroom voltage control (AHVC) directly regulates external DC/DC converters through a single FB pin from the last device in chain, minimizing layout complexity. Diagnostics include per-zone LED open/short detection and thermal shutdown, with readback via programmable UART/INT or CLK_O/SOUT outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - Enables direct operation from standard logic or buck-regulated supplies without level-shifting. |
| Output Current | 30mA per channel - Delivers sufficient drive for high-brightness LED strings in local dimming zones. |
| Compliance Voltage | 50V - Supports longer LED strings or higher forward-voltage configurations in large-panel backlights. |
| Current Matching | ±2% (typ.) device-to-device and channel-to-channel - Ensures uniform luminance across dimming zones without per-channel calibration. |
| Dimming Resolution | Up to 15-bit - Enables fine-grained brightness control for smooth gradation and reduced contouring artifacts. |
| Interface Speed | Up to 20MHz daisy-chain data rate - Allows rapid update of >32,000 zones across 1024 devices with minimal frame latency. |
| Power Consumption | ≤3.5mA (normal), ≤200μA (standby) - Reduces system-level power budget and thermal load in always-on display subsystems. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm, 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 | Primary power rail (3–5.5V); decoupling required near pin for noise-sensitive analog current regulation. |
| GND | Ground reference | Analog/digital common return; must be connected to low-impedance ground plane beneath exposed thermal pad. |
| CLK_I | Input clock | Master clock input for daisy-chain synchronization; accepts 1.8V/3.3V logic levels. |
| SIN | Serial data input | Configures device address, registers, and brightness data; driven by upstream controller or preceding device. |
| SOUT | Serial data output | Passes shifted-out register data to next device; enables daisy-chain readback via SOUT/CLK_O mode. |
| CLK_O | Output clock | Re-drives CLK_I signal to downstream device; maintains timing integrity across long chains. |
| FB | Feedback input | Connects only to last device's FB pin for AHVC; controls external DC/DC converter output voltage. |
| OUT0–OUT15 | Constant-current sinks | 16 high-side current outputs; each drives LED cathodes to GND with 50V compliance and 30mA max. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events; requires external pull-up. |
| UART_TX/RX | Diagnostic interface | Configurable as UART pins (when not using SOUT/CLK_O mode) for register readback and fault logging. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting DC/DC output to match minimum required LED string voltage across all active zones. |
| Programmable Black Insertion | Inserts controlled black frames between video frames to reduce motion blur without requiring panel-level hardware changes. |
| Variable Refresh Rate (VRR) Support | Maintains flicker-free operation during dynamic refresh rate switching by synchronizing dimming updates to frame boundaries. |
| Per-Zone LED Open/Short Detection | Identifies failed LEDs or wiring faults in individual dimming zones, enabling graceful degradation and system-level error reporting. |
| Two-Wire Daisy Chain Interface | Minimizes PCB routing complexity and controller GPIO count when scaling to thousands of dimming zones across large displays. |
Applications
| TV Backlight Local Dimming | Monitor Backlight Local Dimming |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs requiring deep contrast and HDR compliance. IC Role / Device Role / Timing Role: Primary 16-channel constant-current sink controlling LED zones behind LCD panel; synchronized via daisy-chain clock for frame-accurate dimming updates. Use Value: Enables >1000-nit peak brightness with <0.005% black level via precise 30mA/50V per-channel drive and ±2% matching. | Use Scenario: Professional-grade monitors for content creation with factory-calibrated color and contrast. IC Role / Device Role / Timing Role: Local dimming zone driver interfaced to MCU or timing controller; uses AHVC to optimize efficiency across varying brightness profiles. Use Value: Achieves consistent luminance uniformity and eliminates blooming artifacts using 15-bit dimming resolution and black insertion. |
| Notebook Display Backlight | Tablet Display Backlight |
Use Scenario: Thin-bezel ultrabooks requiring compact, thermally efficient backlight solutions. IC Role / Device Role / Timing Role: Integrated LED driver in space-constrained display module; operates from 3.3V rail with standby current ≤200μA. Use Value: Reduces BOM count and PCB area versus discrete FET+current-sense solutions while maintaining 30mA drive capability per channel. | Use Scenario: Portable tablets needing low-power, high-reliability backlight control with fault diagnostics. IC Role / Device Role / Timing Role: Fault-aware LED driver with integrated thermal shutdown and LED short/open detection reported via INT pin. Use Value: Extends battery life via ultra-low standby power and prevents thermal runaway in sealed tablet enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69652YBHR | Same electrical specs; DSBGA-24 (1.58mm × 2.43mm) instead of WQFN-24 (4mm × 4mm). | Preferred for ultra-compact modules where board area is constrained; requires different stencil and reflow profile. | Select TLC69652YBHR for space-critical designs; verify thermal pad soldering and ball-grid reliability in high-vibration environments. |
| TLC69654RTWR | 60mA/50V output (vs. 30mA/50V); identical pinout, interface, and feature set. | Required for higher-brightness LED strings or lower-forward-voltage configurations demanding >30mA per channel. | Choose TLC69654RTWR when driving high-luminance microLED or high-Vf phosphor-converted LEDs; no layout change needed. |
Compared with TLC69652RTWR, TLC69652YBHR offers identical performance in a smaller footprint but demands tighter assembly control, while TLC69654RTWR doubles output current without altering system architecture-enabling scalability from mid-tier to premium backlight performance.
Availability
TLC69652RTWR 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 TLC69652RTWR 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 leadership in power management and precision analog ICs.
The TLC696x2/4/8 product line is engineered specifically for high-performance LCD local dimming backlight systems, balancing precision current regulation, system-level efficiency (via AHVC), and advanced display quality features (VRR, black insertion, low-latency updates).
FAQ
What is the maximum LED string voltage supported by the TLC69652RTWR?
The TLC69652RTWR supports a 50V compliance voltage per output channel, enabling it to drive LED strings with total forward voltage up to 50V. This allows flexibility in configuring series-connected LEDs for various brightness and efficiency targets in TV, monitor, and notebook backlight applications. The 50V rating is specified under all operating conditions and matches the TLC69652RTWR's internal current-sink transistor breakdown limit.
Does the TLC69652RTWR require external current-setting resistors?
No, the TLC69652RTWR does not require external current-setting resistors. It integrates precision 30mA constant-current sinks per channel with ±2% matching, calibrated internally. Current magnitude is digitally controlled via global 8-bit maximum current (MC) register and per-channel brightness registers-eliminating component variation and board space associated with external resistors.
How does the adaptive headroom voltage control (AHVC) function in the TLC69652RTWR?
The TLC69652RTWR's AHVC monitors the highest required output voltage among its 16 channels and adjusts the external DC/DC converter's output via the FB pin-only the last device in the daisy chain connects FB to the converter. This minimizes power dissipation across all drivers by eliminating unnecessary headroom, directly improving system efficiency without compromising dimming fidelity or response time in the TLC69652RTWR.
Can the TLC69652RTWR support variable refresh rate (VRR) without visible flicker?
Yes, the TLC69652RTWR supports VRR without flicker by synchronizing LED dimming updates to frame boundaries and leveraging its minimum brightness update latency feature. Its internal timing engine ensures that PWM and hybrid dimming transitions occur cleanly within blanking intervals-even during dynamic refresh rate shifts-preserving image stability and eliminating perceptible artifacts in gaming or video playback scenarios using the TLC69652RTWR.
What diagnostic capabilities does the TLC69652RTWR provide for LED fault detection?
The TLC69652RTWR provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). Fault status is reported either via dedicated INT pin (active-low open-drain) or through UART/INT or SOUT/CLK_O readback interfaces. These diagnostics enable robust system-level health monitoring and fail-safe behavior in commercial and industrial display products using the TLC69652RTWR.
TLC69652RTWR 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:
- 30mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69652RTWR FAQ
1.How can I place an order for TLC69652RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69652RTWR 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 TLC69652RTWR reliable?
The price and inventory of TLC69652RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69652RTWR is usually 5 days.
3.What payment methods are accepted for TLC69652RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69652RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69652RTWR?
TLC69652RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69652RTWR 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 TLC69652RTWR?
For technical support, including TLC69652RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69652RTWR requirements.
6.How does Aetrix verify that TLC69652RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69652RTWR 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 TLC69652RTWR meets industry standards.
7.What is the process for return or replacement of TLC69652RTWR?
All TLC69652RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69652RTWR, 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 TLC69652RTWR part is unused and in its original packaging.
Return procedure for TLC69652RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69652RTWR Tags
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
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