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Texas Instruments TLC69604RTWR
- Part No.:
- TLC69604RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69604RTWR.pdf
- Description:
- 64 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69604RTWR from Texas Instruments is a 16-channel constant-current LED driver for LCD local dimming backlight systems, supporting 4-time multiplexing with 30mA/20V output capability, ±2% channel-to-channel current matching, and 15-bit brightness resolution. It operates from 3V to 5.5V and integrates adaptive headroom voltage control (AHVC) for DC/DC optimization in high-end TV and monitor backlight units.
For engineers reviewing the TLC69604RTWR datasheet, TLC69604RTWR pinout, TLC69604RTWR application, or TLC69604RTWR equivalent, key selection criteria include its 24-pin WQFN package, daisy-chain 20MHz serial interface, UART/interrupt or two-wire diagnostic reporting, and support for variable refresh rate (VRR) without flicker in premium display systems.
Technical Context
The TLC69604RTWR implements time-multiplexed local dimming using 16 independent constant-current sinks, each programmable via internal SRAM for per-zone brightness control. Its AHVC scheme dynamically adjusts VLED headroom by monitoring the last device's FB pin in a daisy chain, reducing power loss in the DC/DC stage.
Diagnostics include per-channel LED open/short detection and thermal shutdown, with readback options configurable via register: either UART + INT pin or CLK_O/SOUT two-wire output. The device supports hybrid PWM/brightness-control modes and programmable black insertion to enhance contrast and motion clarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sinks for independent LED zone control |
| Max output current/voltage | 30mA per channel up to 20V - enables driving mid-voltage LED strings in 4× multiplexed backlight arrays |
| Current matching | ±2% (typ.) channel-to-channel error - ensures uniform luminance across dimming zones |
| Brightness resolution | Up to 15-bit - supports fine-grained dimming steps for HDR content rendering |
| Interface speed | Up to 20MHz daisy-chain data rate - allows fast update of >32,000 zones with minimal latency |
| Supply voltage | 3V to 5.5V - compatible with standard logic rails and low-power system designs |
| Quiescent current | ≤3.5mA in normal mode; ≤200μA in standby - reduces idle power in always-on display subsystems |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm body, 0.5mm pitch, exposed thermal pad (Pin 25), moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and output drivers |
| GND | Ground reference | Common return for analog/digital circuits and current sinks |
| CLK_I | Input clock | Accepts master clock 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 clock signal to next device; used with SOUT for two-wire diagnostics |
| FB | Feedback input | Connects only to last device in chain to regulate VLED headroom via external DC/DC converter |
| INT | Interrupt output | Active-low signal indicating LOD/LSD/TSD fault conditions when UART mode is selected |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks; each drives one LED string segment in local dimming zone |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive headroom voltage control (AHVC) | Reduces VLED overvoltage by dynamically adjusting DC/DC output based on worst-case forward voltage in chain - cuts power loss and heat in backlight power stage |
| Programmable black insertion | Inserts precise black frames between video frames to reduce motion blur and improve perceived contrast in fast-moving content |
| Variable refresh rate (VRR) support | Maintains stable dimming behavior across dynamic frame rates - eliminates flicker during adaptive sync (e.g., FreeSync/G-Sync) operation |
| Two diagnostic reporting modes | UART + INT pin or CLK_O/SOUT two-wire interface - offers flexibility in system-level fault logging without requiring additional UART peripherals |
| 4-phase EMI reduction | Integrated phase-shifting across output drivers lowers peak radiated emissions - simplifies EMC compliance in compact display enclosures |
Applications
| TV Local Dimming Backlight | Monitor Local Dimming Backlight |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs with >1000 local dimming zones for HDR10+ and Dolby Vision playback. IC Role / Device Role / Timing Role: Primary 16-channel constant-current sink managing 4× time-multiplexed LED zones per IC; coordinated via daisy chain for system-wide brightness updates. Use Value: Enables deep black levels and peak brightness >1000 nits while maintaining color fidelity through precise per-zone current regulation and VRR flicker suppression. | Use Scenario: Professional-grade gaming and creative monitors requiring low-latency, high-contrast imaging with adaptive sync. IC Role / Device Role / Timing Role: Local dimming controller synchronizing with GPU frame delivery; uses minimum brightness update latency and black insertion for motion clarity. Use Value: Eliminates backlight-induced motion blur and flicker during rapid frame-rate changes, improving responsiveness and visual comfort in competitive and content-creation use cases. |
| Notebook Display Backlight | Tablet Display Backlight |
Use Scenario: Thin-bezel ultrabooks with edge-lit or direct-lit local dimming for improved battery life and contrast ratio. IC Role / Device Role / Timing Role: Compact backlight driver operating from 3.3V rail; leverages standby mode (≤200μA) during display sleep states. Use Value: Extends battery runtime via ultra-low quiescent current and efficient AHVC-driven DC/DC regulation, without compromising HDR performance. | Use Scenario: Premium tablets with high-brightness, sunlight-readable displays requiring robust thermal management. IC Role / Device Role / Timing Role: Thermal-aware LED driver with integrated TSD detection and automatic shutdown to prevent overheating in confined tablet chassis. Use Value: Ensures long-term reliability under sustained brightness by halting operation before junction temperature exceeds safe limits - critical for sealed, fanless designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69602RTWR | Same 16-channel, 30mA/20V architecture but supports 2× time-multiplexing instead of 4× - lower zone density per device | Preferred for simpler backlight topologies with fewer dimming zones or lower cost targets | Select when system requires reduced daisy-chain depth and lower firmware complexity for zone mapping |
| TLC69608RTWR | Same pinout and interface, but supports 8× time-multiplexing - doubles zone count per device versus TLC69604RTWR | Used in ultra-high-resolution displays (e.g., 1152+ zone TVs) where PCB space and interconnect count are constrained | Choose when maximizing zone density per IC is critical and system can accommodate higher timing precision requirements |
Compared with TLC69602RTWR and TLC69608RTWR, the TLC69604RTWR provides optimal balance of zone scalability (4× multiplexing), thermal efficiency, and design simplicity for mainstream high-performance LCD backlights - avoiding over-engineering while enabling >1000-zone implementations with manageable daisy-chain length.
Availability
TLC69604RTWR is available at Aetrix Electronics and suitable for TV, monitor, and notebook backlight systems requiring stable component supply, long-term production continuity, and automotive-qualified alternatives (TLC69604-Q1) for safety-critical displays.
Supply support for TLC69604RTWR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer applications.
The TLC696x2/4/8 product line was engineered specifically for high-fidelity LCD local dimming backlight control - emphasizing precision current matching, low-latency update, and system-level power optimization via AHVC and intelligent diagnostics.
FAQ
What is the maximum number of TLC69604RTWR devices that can be daisy-chained?
The TLC69604RTWR supports daisy chains of up to 1024 devices, enabling control of more than 32,000 local dimming zones in large-format displays. This scalability relies on its 20MHz high-speed serial interface and deterministic timing architecture - all devices in the chain share CLK_I and propagate CLK_O, with SIN/SOUT forming a unidirectional data path. Each TLC69604RTWR contributes 16 independently controllable current sinks to the total zone count.
Does the TLC69604RTWR support both PWM and analog dimming modes?
Yes, the TLC69604RTWR supports hybrid dimming control: global 8-bit maximum current (MC) setting combined with up to 15-bit brightness resolution. This allows simultaneous adjustment of output current amplitude (analog-like) and duty-cycle modulation (PWM-like), giving system designers flexibility to optimize for efficiency, EMI, or visual quality. The device does not require external PWM generators - all timing is internally managed and synchronized across channels.
How does the adaptive headroom voltage control (AHVC) function in the TLC69604RTWR?
The TLC69604RTWR implements AHVC by monitoring the feedback (FB) pin of the last device in the daisy chain to sense the highest forward voltage among all driven LED strings. That voltage is used to set the minimum required VLED rail via an external DC/DC converter - eliminating unnecessary overvoltage across all strings. Only the final device's FB pin connects to the DC/DC; intermediate devices ignore FB, ensuring simple, scalable layout. This reduces power dissipation and thermal stress in the backlight power stage.
What diagnostic capabilities does the TLC69604RTWR provide, and how are they reported?
The TLC69604RTWR provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These faults are reported via two configurable interfaces: (1) UART + dedicated INT pin for interrupt-driven host polling, or (2) CLK_O and SOUT pins for two-wire readback without UART hardware. Configuration is register-based, allowing runtime selection. No external components are needed - all sensing is integrated and calibrated.
Is the TLC69604RTWR pin-compatible with other members of the TLC696x2/4/8 family?
Yes, the TLC69604RTWR is fully pin-compatible with all WQFN-24 variants in the TLC696x2/4/8 family (e.g., TLC69602RTWR, TLC69608RTWR, TLC69612RTWR), sharing identical pinout, package dimensions, thermal pad layout, and interface signaling. This allows drop-in replacement during design iteration or production ramp - only firmware configuration and time-multiplexing settings differ. Datasheet Section 6 confirms identical RTW package mechanicals and land patterns across the series.
TLC69604RTWR 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:
- 30mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69604RTWR FAQ
1.How can I place an order for TLC69604RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69604RTWR 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 TLC69604RTWR reliable?
The price and inventory of TLC69604RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69604RTWR is usually 5 days.
3.What payment methods are accepted for TLC69604RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69604RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69604RTWR?
TLC69604RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69604RTWR 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 TLC69604RTWR?
For technical support, including TLC69604RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69604RTWR requirements.
6.How does Aetrix verify that TLC69604RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69604RTWR 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 TLC69604RTWR meets industry standards.
7.What is the process for return or replacement of TLC69604RTWR?
All TLC69604RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69604RTWR, 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 TLC69604RTWR part is unused and in its original packaging.
Return procedure for TLC69604RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69604RTWR Tags
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BCR430UXTSA2
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BCR420UE6433HTMA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UFD-7
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BCR421UFD-7
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