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Texas Instruments TLC69660RTWR
- Part No.:
- TLC69660RTWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
TLC69660RTWR.pdf
- Description:
- 8-SCAN MOSFET CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69660RTWR from Texas Instruments is a 24-pin WQFN-packaged scan MOSFET controller designed for LCD local dimming backlight systems. It delivers 60mA drive current at up to 50V sustaining voltage, supports daisy-chain interface up to 20MHz, and integrates ghost-cancellation, adaptive headroom control, and programmable black insertion for high-fidelity display timing. It operates from 3V to 5.5V and targets TV and monitor backlight driver stacks with TLC696x2/4/8 current-sink drivers.
For engineers reviewing the TLC69660RTWR datasheet, TLC69660RTWR pinout, TLC69660RTWR application, or TLC69660RTWR equivalent, key selection criteria include its 60mA/50V P-MOSFET driving capability, UART/INT and SOUT/CLK_O diagnostic readback options, thermal shutdown detection, and compatibility with 2/4/8-time-multiplexed scan architectures in high-resolution local dimming systems.
Technical Context
The TLC69660RTWR implements a serial daisy-chain interface with 1.8V/3.3V I/O compatibility and 20MHz maximum data rate, enabling fast configuration of multiple controllers in large-area backlight arrays. It integrates adaptive headroom voltage control that directly regulates DC/DC via the FB pin of the last device in chain, reducing system component count and layout complexity.
It features dual diagnostic reporting paths - programmable UART/INT interrupt and two-wire SOUT/CLK_O output - alongside three error flags: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). Its ghost-cancellation function eliminates upside ghosting in time-multiplexed scan topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - powers internal logic and interface circuitry without external level-shifting. |
| Driving Capability | 60mA / 50V - sustains higher-voltage P-MOSFET gates in demanding local dimming zones. |
| Data Rate | Up to 20MHz - enables rapid brightness updates across 16-channel scan control in high-refresh displays. |
| I/O Voltage Compatibility | 1.8V / 3.3V - interoperates with modern low-voltage microcontrollers and FPGAs. |
| Thermal Protection | Integrated thermal shutdown detection - halts operation above safe junction temperature to prevent damage. |
| Error Reporting | UART/INT and SOUT/CLK_O options - provides flexible diagnostic integration into host firmware or hardware monitoring paths. |
| Ghost Cancellation | Hardware-implemented - eliminates visual artifacts caused by residual charge in multiplexed scan architecture. |
Pinout & Package
Package: WQFN-24 (RTW), 4mm × 4mm body, 0.8mm max height, exposed thermal pad (Pin 25), RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and interface; decoupling required near pin. |
| GND | Ground reference | Common return for power and signals; connects to exposed thermal pad for thermal performance. |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain data synchronization; supports up to 20MHz. |
| SIN | Serial data input | Receives configuration and control data from upstream device or host controller. |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for diagnostic readback (SOUT/CLK_O mode). |
| CLK_O | Serial clock output | Passes clock to next device; paired with SOUT for two-wire diagnostic readback. |
| FB | Feedback input | Connects only to last device's FB in chain to regulate DC/DC headroom voltage adaptively. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events to host processor. |
| G0–G7 | Scan gate outputs | Drive P-MOSFET gates for 8 scan lines; each supports 60mA sink capability at 50V. |
| D0–D15 | Current sink outputs | 16 constant-current sinks (not pins on TLC69660RTWR itself - driven by companion TLC696x2/4/8 devices). |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive headroom control | Reduces power loss by dynamically adjusting DC/DC output voltage based on real-time LED string requirements. |
| Programmable black insertion | Inserts controlled black frames between refresh cycles to suppress motion blur without flicker. |
| Variable refresh rate (VRR) | Maintains stable luminance during VRR transitions by synchronizing scan timing with frame rate changes. |
| Minimum brightness update latency | Enables sub-frame brightness adjustments critical for HDR tone mapping in local dimming applications. |
| Ghost-cancellation circuitry | Eliminates vertical ghosting artifacts inherent to time-multiplexed scan architectures in high-resolution backlights. |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-end 4K/8K TVs implementing zone-based local dimming with >1000 backlight zones. IC Role / Device Role / Timing Role: Scan controller coordinating P-MOSFET switching for 8 scan lines per device, synchronized with TLC696x8 current-sink drivers. Use Value: Enables precise per-zone brightness control while maintaining >10,000:1 contrast ratio and eliminating ghosting through hardware cancellation. | Use Scenario: Professional-grade monitors requiring flicker-free VRR support and uniform edge-lit backlighting. IC Role / Device Role / Timing Role: Timing coordinator managing scan sequencing and black insertion to suppress motion blur during variable refresh. Use Value: Delivers smooth scrolling and gaming responsiveness without perceptible flicker or brightness instability across 48–144Hz VRR range. |
| Notebook Display Driver | Tablet HDR Backlight |
Use Scenario: Thin-bezel ultrabooks using edge-lit local dimming with constrained PCB area. IC Role / Device Role / Timing Role: Compact scan controller interfacing with low-voltage 1.8V host MCU via daisy-chain, minimizing BOM count. Use Value: Achieves >800 nits peak brightness and deep blacks within tight thermal envelope using adaptive headroom and thermal shutdown protection. | Use Scenario: HDR-capable tablets requiring battery-efficient local dimming with minimal latency. IC Role / Device Role / Timing Role: Low-latency scan sequencer enabling real-time brightness updates aligned with video frame metadata (e.g., SMPTE ST 2084). Use Value: Supports dynamic tone mapping with <5ms brightness update latency, preserving HDR detail while extending battery life via optimized headroom. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar scan MOSFET controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69650RTWR | 30mA / 50V driving capability - lower gate drive current than TLC69660RTWR. | Targeted at lower-power backlight zones or smaller displays where 60mA is unnecessary. | Select when thermal budget or MOSFET gate charge requirements are reduced; not drop-in due to current rating difference. |
| TLC69610RTWR | 60mA / 20V sustaining voltage - limited to lower-voltage P-MOSFETs. | Suitable for compact displays with shorter LED strings and lower forward voltage requirements. | Choose for cost-sensitive designs with ≤20V rail constraints; requires redesign if 50V operation is needed. |
Compared with TLC69650RTWR and TLC69610RTWR, the TLC69660RTWR uniquely combines 60mA drive strength with 50V sustaining voltage - essential for high-brightness, high-contrast local dimming in large-format displays where both gate drive energy and string voltage headroom are critical.
Availability
TLC69660RTWR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and HDR notebook display modules requiring stable component supply, long-term lifecycle support, and automotive-qualified alternatives (TLC69660-Q1) for safety-critical implementations.
Supply support for TLC69660RTWR 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 over 90 years of innovation in power management and interface solutions.
The TLC696x0 family was developed specifically for high-fidelity LCD local dimming backlight control, addressing timing precision, EMI reduction, and diagnostic robustness in premium consumer and professional display systems.
FAQ
What is the maximum sustaining voltage supported by the TLC69660RTWR?
The TLC69660RTWR supports a maximum sustaining voltage of 50V for P-MOSFET gate driving. This rating enables compatibility with higher-voltage LED strings and ensures reliable switching in large-area local dimming applications where gate drive headroom is critical. The 50V specification is confirmed in TI's official SNVSCJ8 datasheet under the "Flexible P-MOSFET driving options" section and applies specifically to the TLC69660 variant.
Does the TLC69660RTWR support daisy-chain configuration with other TLC696x0 devices?
Yes, the TLC69660RTWR supports high-speed daisy-chain configuration using CLK_I, SIN, SOUT, and CLK_O pins. It achieves up to 20MHz data transfer rate and maintains 1.8V/3.3V I/O compatibility across the chain. The architecture allows cascading multiple TLC69660RTWR units to scale scan line count while sharing a single host interface - a core feature validated in TI's functional description and timing diagrams.
How does the adaptive headroom control work in the TLC69660RTWR?
The TLC69660RTWR implements adaptive headroom control by regulating the DC/DC converter output voltage based on real-time LED string voltage requirements. Only the FB pin of the last device in the daisy chain connects to the DC/DC feedback node, enabling centralized, simplified layout and minimizing voltage overhead. This scheme reduces power dissipation and improves system efficiency - explicitly described in the "Description" section of the SNVSCJ8 datasheet.
What diagnostic functions are available on the TLC69660RTWR?
The TLC69660RTWR provides three dedicated diagnostics: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). Readback is configurable via two paths - UART + INT pin or SOUT + CLK_O - allowing flexible integration into host firmware or hardware monitoring circuits. These capabilities are documented in the "Diagnostics" subsection of the Features list and verified in the device register map.
Is the TLC69660RTWR pin-compatible with other variants like TLC69650RTWR?
No, the TLC69660RTWR is not pin-compatible with TLC69650RTWR in terms of functional equivalence - though both share identical WQFN-24 (RTW) packaging and pinout, their driving specifications differ: TLC69660RTWR delivers 60mA/50V, while TLC69650RTWR delivers 30mA/50V. Electrical behavior and thermal design must be revalidated; no documentation asserts drop-in replacement status between these variants.
TLC69660RTWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x0
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- -
- 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:
- No
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WQFN (4x4)
TLC69660RTWR FAQ
1.How can I place an order for TLC69660RTWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69660RTWR 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 TLC69660RTWR reliable?
The price and inventory of TLC69660RTWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69660RTWR is usually 5 days.
3.What payment methods are accepted for TLC69660RTWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69660RTWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69660RTWR?
TLC69660RTWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69660RTWR 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 TLC69660RTWR?
For technical support, including TLC69660RTWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69660RTWR requirements.
6.How does Aetrix verify that TLC69660RTWR is sourced from the original manufacturer or authorized distributors?
All TLC69660RTWR 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 TLC69660RTWR meets industry standards.
7.What is the process for return or replacement of TLC69660RTWR?
All TLC69660RTWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69660RTWR, 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 TLC69660RTWR part is unused and in its original packaging.
Return procedure for TLC69660RTWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69660RTWR Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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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
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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