My Inquiry
My Account
Texas Instruments TLC69611RTWR
- Part No.:
- TLC69611RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69611RTWR.pdf
- Description:
- MINI-LED LOCAL DIMMING BACKLIGHT
- Quantity:
- Payment:
- Shipping:
Inventory:2,972
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC69611RTWR from Texas Instruments is a 16-channel constant-current LED sink driver optimized for LCD local dimming backlight systems, delivering 60mA per channel at up to 20V output compliance, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution for high-fidelity display control in TV and monitor applications.
For engineers reviewing the TLC69611RTWR datasheet, TLC69611RTWR pinout, TLC69611RTWR application, or TLC69611RTWR equivalent, key selection criteria include its adaptive headroom voltage control (AHVC), daisy-chainable 20MHz two-wire interface, UART/interrupt or SOUT/CLK_O diagnostic readback options, and thermal shutdown/LED open-short detection per zone.
Technical Context
The TLC69611RTWR implements a synchronized daisy-chain topology supporting up to 1024 devices for 16,000-zone local dimming, with SRAM-based brightness storage per channel and programmable black insertion and variable refresh rate (VRR) to eliminate flicker. Its AHVC scheme directly controls external DC/DC via the FB pin of the last device in chain.
Diagnostics include three dedicated error flags-LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD)-with two configurable readback paths: UART + INT pin or two-wire CLK_O/SOUT. Interface I/O supports 1.8V and 3.3V logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sinks |
| Max output current/voltage | 60mA per channel at 20V compliance - enables driving high-brightness LED strings in compact backlight zones |
| Current accuracy | ±2% (typ.) device-to-device and channel-to-channel - ensures uniform luminance across dimming zones |
| Brightness resolution | Up to 15-bit PWM/hybrid control - supports smooth grayscale transitions without visible banding |
| Daisy-chain speed | Up to 20MHz data rate - reduces frame update latency for real-time VRR and black insertion |
| Supply voltage | 3V to 5.5V VCC - compatible with standard logic rails and low-power system designs |
| Quiescent current | ≤200μA in standby mode - minimizes power loss during display idle periods |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm body, 0.5mm pitch, exposed thermal pad (Pin 25).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for internal logic and bias circuits |
| GND | Ground reference | Common return path for all analog/digital circuitry and current sinks |
| CLK_I | Input clock | Accepts master clock signal 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 diagnostic readback |
| CLK_O | Output clock | Propagates synchronized clock to next device; used with SOUT for two-wire diagnostics |
| FB | Feedback input | Connects only on last device in chain to regulate DC/DC output voltage via AHVC |
| OUT0–OUT15 | Constant-current outputs | 16 high-side referenced current sinks - each drives one LED string cathode |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events to host controller |
| UART | Diagnostic serial interface | Configurable UART TX/RX pins for register-level fault reporting and configuration |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting DC/DC output to minimum required for LED string forward voltage plus margin |
| Programmable black insertion | Inserts precise black frames between video frames to enhance contrast ratio and reduce motion blur |
| Variable Refresh Rate (VRR) support | Enables flicker-free dynamic frame rate switching without brightness discontinuity or timing artifacts |
| Per-zone LED diagnostics | Detects open-circuit, short-circuit, and thermal faults independently for all 16 channels with configurable reporting |
| 15-bit hybrid dimming | Combines 8-bit maximum current (MC) setting with 7-bit PWM depth for ultra-fine luminance granularity |
Applications
| TV Local Dimming System | 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 16-channel LED sink driver in cascaded daisy-chain configuration, managing zone-specific current and timing-synchronized black insertion. Use Value: Enables >1,000,000:1 dynamic contrast ratio and eliminates blooming through precise per-zone current regulation and sub-millisecond update latency. | Use Scenario: Professional-grade monitors with factory-calibrated color gamut and flicker-free VRR for creative workflows. IC Role / Device Role / Timing Role: Constant-current driver coordinating with host GPU timing controller to execute VRR updates without visual artifacts. Use Value: Delivers flicker-free variable refresh operation down to 48Hz while maintaining consistent luminance and color fidelity across brightness levels. |
| Notebook Display Backlight | Tablet HDR Panel Driver |
Use Scenario: Thin-bezel ultrabooks with edge-lit or mini-LED backlights requiring low-power, high-accuracy dimming. IC Role / Device Role / Timing Role: Compact WQFN-packaged LED driver interfacing directly with embedded controller over 1.8V I/O, managing 16-zone backlight with standby current ≤200μA. Use Value: Extends battery life via ultra-low quiescent power and enables thin mechanical design using 4mm × 4mm RTW package with thermal pad. | Use Scenario: HDR-capable tablets with localized dimming for outdoor visibility and media consumption. IC Role / Device Role / Timing Role: Zone driver implementing programmable black insertion to improve perceived contrast in ambient light without increasing peak brightness. Use Value: Improves perceived contrast ratio by >3× in daylight conditions while maintaining full 15-bit grayscale rendering and zero flicker at 60–120Hz VRR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69661RTWR | 60mA/50V output capability vs. TLC69611RTWR's 60mA/20V - higher compliance voltage supports longer LED strings | Required where LED forward voltage exceeds 20V (e.g., 12+ LEDs in series); not needed for typical 6–8 LED mini-LED strings | Select TLC69661RTWR only when system-level Vf demands exceed 20V; otherwise TLC69611RTWR offers optimal cost/power trade-off |
| TLC69601RTWR | 30mA/20V output vs. TLC69611RTWR's 60mA/20V - half the per-channel drive strength | Suitable for lower-brightness panels or designs using parallel current paths; insufficient for single-string 60mA mini-LED zones | Choose TLC69601RTWR for cost-sensitive, lower-power backlight segments; TLC69611RTWR is mandatory for full-brightness mini-LED implementations |
Compared with TLC69661RTWR and TLC69601RTWR, the TLC69611RTWR uniquely balances 60mA drive strength with 20V compliance and ultra-low standby power, making it the optimal choice for mainstream mini-LED TV, monitor, and notebook backlight systems where LED string count and power efficiency are tightly constrained.
Availability
TLC69611RTWR is available at Aetrix Electronics and suitable for TV local dimming systems, professional monitor backlight control, and notebook/tablet HDR panel designs requiring stable component supply, long-term lifecycle support, and automotive-qualified alternatives (TLC69611-Q1) for safety-critical displays.
Supply support for TLC69611RTWR 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 designing analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer applications.
The TLC696x1 product line was developed specifically for high-precision, scalable LCD local dimming backlight systems - enabling manufacturers to implement thousands of independently controlled LED zones with minimal board space and power overhead.
FAQ
What is the maximum number of TLC69611RTWR devices that can be daisy-chained?
The TLC69611RTWR supports daisy-chain topologies of up to 1024 devices, enabling control of 16,000 local dimming zones in a single serial bus. This scalability is achieved through its high-speed 20MHz two-wire interface and integrated SRAM for per-device brightness storage, eliminating the need for external memory or complex addressing schemes in large-area displays.
Does the TLC69611RTWR support both PWM and analog dimming modes?
The TLC69611RTWR implements hybrid dimming - combining an 8-bit global maximum current (MC) setting with up to 7-bit PWM depth to achieve 15-bit effective brightness resolution. It does not support true analog (voltage-controlled) dimming; current regulation is always digital, but the MC register adjusts the full-scale current reference before PWM application, providing fine-grained luminance control without PWM frequency artifacts.
How does the Adaptive Headroom Voltage Control (AHVC) function in the TLC69611RTWR?
The TLC69611RTWR's AHVC monitors the highest forward voltage among its 16 LED strings and dynamically adjusts the external DC/DC converter's output via the FB pin - but only on the final device in the daisy chain. This minimizes power dissipation across all TLC69611RTWR devices by ensuring the supply rail is just high enough to drive the most demanding string, improving overall system efficiency by up to 25% compared to fixed-headroom designs.
What diagnostic capabilities does the TLC69611RTWR provide for LED fault detection?
The TLC69611RTWR provides per-channel LED open detection (LOD), LED short detection (LSD), and device-level thermal shutdown detection (TSD). Fault status is reported either through an active-low interrupt pin (INT) or via two-wire diagnostic readback using CLK_O and SOUT pins. All three flags are latched and readable via register access, enabling rapid root-cause analysis in field-deployed displays without requiring additional sensor circuitry.
Is the TLC69611RTWR pin-compatible with other members of the TLC696x1 family?
Yes - all TLC696x1 variants including TLC69601RTWR, TLC69611RTWR, TLC69651RTWR, and TLC69661RTWR share identical WQFN-24 (RTW) and DSBGA-24 (YBH) packages, pinouts, and register maps. The only functional differences are output current rating (30mA vs. 60mA) and output voltage compliance (20V vs. 50V), allowing drop-in replacement during design iteration or cost optimization without PCB layout changes.
TLC69611RTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x1
- 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)
TLC69611RTWR FAQ
1.How can I place an order for TLC69611RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69611RTWR 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 TLC69611RTWR reliable?
The price and inventory of TLC69611RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69611RTWR is usually 5 days.
3.What payment methods are accepted for TLC69611RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69611RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69611RTWR?
TLC69611RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69611RTWR 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 TLC69611RTWR?
For technical support, including TLC69611RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69611RTWR requirements.
6.How does Aetrix verify that TLC69611RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69611RTWR 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 TLC69611RTWR meets industry standards.
7.What is the process for return or replacement of TLC69611RTWR?
All TLC69611RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69611RTWR, 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 TLC69611RTWR part is unused and in its original packaging.
Return procedure for TLC69611RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69611RTWR Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
