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Texas Instruments TLC69611YBHR
- Part No.:
- TLC69611YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69611YBHR.pdf
- Description:
- MINI-LED LOCAL DIMMING BACKLIGHT
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69611YBHR 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 via PWM/hybrid dimming control.
For engineers reviewing the TLC69611YBHR datasheet, TLC69611YBHR pinout, TLC69611YBHR application, or TLC69611YBHR equivalent, this device supports high-density daisy-chained configurations (up to 1024 devices), adaptive headroom voltage control (AHVC) for DC/DC optimization, UART/INT and SOUT/CLK_O diagnostic readback, and display-quality features including black insertion and variable refresh rate (VRR) without flicker.
Technical Context
The TLC69611YBHR implements a daisy-chain two-wire serial interface supporting up to 20MHz data transfer with 1.8V/3.3V I/O compatibility, enabling scalable local dimming zone expansion across large displays. Its SRAM-based brightness storage per channel eliminates host-side frame buffering overhead.
Adaptive Headroom Voltage Control (AHVC) dynamically adjusts the LED supply voltage by monitoring the FB pin of the last device in the chain, minimizing power loss across the current sinks while maintaining full 20V compliance margin. Integrated diagnostics include per-zone LED open/short detection and thermal shutdown reporting via programmable UART/INT or SOUT/CLK_O interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - Enables direct integration with standard logic-supply rails without external regulators. |
| Max Output Current / Voltage | 60mA / 20V - Supports high-brightness LED strings in TV and monitor backlight zones requiring robust current drive. |
| Current Matching | ±2% (typ.) device-to-device and channel-to-channel - Ensures uniform luminance across adjacent dimming zones without software calibration. |
| Brightness Resolution | Up to 15-bit - Delivers >32,000 grayscale steps for smooth gradient rendering and reduced contouring artifacts. |
| Interface Speed | Up to 20MHz daisy-chain serial - Allows full 16-channel update in <1µs, critical for low-latency VRR and black insertion timing. |
| Power Consumption | ICC ≤ 3.5mA (normal), ≤200µA (standby) - Minimizes system-level standby power in always-on display subsystems. |
| Diagnostic Reporting | LED open/short (LOD/LSD) and thermal shutdown (TSD) per zone - Enables real-time fault isolation without host polling overhead. |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm, 0.4mm max height, ball pitch 0.4mm, exposed thermal pad (ball 25).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail (3V–5.5V) for internal logic and current sink biasing. |
| GND | Ground reference | Common return path for all analog/digital circuits and current sink outputs. |
| CLK_I | Input clock | Master clock input for synchronous daisy-chain data latching (supports 20MHz). |
| SIN | Serial data input | Accepts 16-bit command/data frames 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 | Output clock | Forwarded clock for downstream synchronization; paired with SOUT for readback. |
| FB | Feedback input | Connects only to last device's FB pin to enable AHVC-driven DC/DC regulation. |
| OUT0–OUT15 | Constant-current sinks | 16 independent high-side referenced current outputs (60mA/20V max) for LED string cathodes. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events; configurable via register. |
| UART_TX/RX | Diagnostic interface | Alternative readback path (UART mode); requires external level-shifting for 3.3V/1.8V host. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power dissipation in current sinks by dynamically lowering VLED supply to minimum required headroom, improving system efficiency by up to 35% vs fixed-voltage designs. |
| 15-bit hybrid dimming | Combines 8-bit global maximum current (MC) scaling with 7-bit PWM depth to achieve precise low-end brightness control without color shift. |
| Programmable black insertion | Inserts configurable dark frames between video frames to enhance perceived contrast ratio and reduce motion blur in fast-moving content. |
| Dual diagnostic readback modes | UART/INT supports full register access and error logging; SOUT/CLK_O enables minimal-pin fault reporting for space-constrained layouts. |
| 4-phase EMI reduction | Internal clock phase shifting across four interleaved groups lowers peak radiated emissions by spreading spectral energy over wider bandwidth. |
Applications
| TV Local Dimming | 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: Constant-current sink driver managing individual LED string cathodes in multi-segment edge-lit or full-array backlights. Use Value: Enables per-zone luminance control with <1µs update latency, supporting VRR and black insertion for cinematic motion clarity without flicker. |
Use Scenario: Professional-grade monitors with factory-calibrated sRGB/DCI-P3 gamut and flicker-free operation. IC Role / Device Role / Timing Role: Precision current source for dual-LED or RGBW backlight arrays, synchronized across multiple TLC69611YBHR daisy chains. Use Value: ±2% current matching ensures uniform white point and brightness across entire display surface, eliminating visible banding. |
| Notebook Display Backlight | Tablet HDR Panels |
Use Scenario: Thin-bezel ultrabooks with narrow-edge full-array local dimming for battery-efficient HDR viewing. IC Role / Device Role / Timing Role: Low-power LED driver operating from 3.3V rail with standby ICC ≤200µA to extend system sleep duration. Use Value: AHVC minimizes heat generation in confined chassis, while 15-bit dimming preserves shadow detail in dark UI elements. |
Use Scenario: 10–12 inch tablets targeting Dolby Vision playback with dynamic metadata-driven dimming. IC Role / Device Role / Timing Role: Zone controller interfacing with display processor via daisy-chain to execute frame-accurate dimming maps. Use Value: SOUT/CLK_O diagnostic mode provides compact fault reporting using only two pins, conserving limited tablet PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611RTWR | Same electrical specs and register map, but in 4mm × 4mm WQFN-24 package with exposed thermal pad (ball 25) and NIPDAU finish. | Better thermal performance in high-power density layouts; larger footprint suits industrial monitors over portable devices. | Select TLC69611RTWR when board space allows and junction temperature rise must be minimized under continuous 60mA/channel load. |
| TLC69651YBHR | Identical DSBGA-24 package and pinout, but rated for 30mA/50V output - higher voltage compliance, lower current capability. | Targets high-Vf LED strings (e.g., UV or high-bin blue) where 20V headroom is insufficient, but total current demand is lower. | Choose TLC69651YBHR only when LED forward voltage exceeds 20V per string; not interchangeable for 60mA current requirements. |
Compared with TLC69611YBHR, TLC69611RTWR offers superior thermal dissipation in space-tolerant designs, while TLC69651YBHR trades current capacity for extended voltage range - neither is pin-compatible for 60mA/20V operation, requiring layout and firmware validation.
Availability
TLC69611YBHR is available at Aetrix Electronics and suitable for TV local dimming, professional monitor backlight control, and notebook/tablet HDR display applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TLC69611YBHR 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 and embedded processing technologies, with leadership in power management, signal chain, and high-reliability interface solutions.
The TLC696x1 family was designed specifically for high-channel-count LCD local dimming backlight systems, emphasizing precision current matching, low-latency update, and integrated display-quality enhancements like black insertion and VRR support.
FAQ
What is the maximum output current and voltage rating for the TLC69611YBHR?
The TLC69611YBHR delivers up to 60mA per channel with a maximum output voltage compliance of 20V. This specification is fixed for the TLC69611 variant and confirmed in the SLVSHB7 datasheet Section 1 (Features) and Table indicating "60mA / 20V: TLC69611". It is not adjustable or programmable beyond this hardware limit.
Does the TLC69611YBHR support daisy-chaining, and how many devices can be connected?
Yes, the TLC69611YBHR supports high-speed daisy-chaining via its two-wire serial interface (CLK_I/SIN/SOUT/CLK_O), with documented support for up to 1024 devices in a single chain. This enables control of up to 16,000 local dimming zones, as stated in the SLVSHB7 datasheet Section 3 (Description) and confirmed in the "Simplified Schematic" caption.
What diagnostic functions does the TLC69611YBHR provide, and how are they reported?
The TLC69611YBHR provides per-zone LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). These faults are reported through two configurable options: UART + interrupt pin (INT), or two-wire output (CLK_O and SOUT). The selection is register-programmable, as detailed in Section 1 (Features) and Section 3 (Description) of SLVSHB7.
What package type and dimensions does the TLC69611YBHR use?
The TLC69611YBHR uses the DSBGA-24 (YBH) package: 1.58mm × 2.43mm nominal body size, 0.4mm maximum height, 0.4mm ball pitch, and an exposed thermal pad at ball 25. This is explicitly listed in the "Device Information" table and "PACKAGE OUTLINE" drawings (YBH0024-C01) in the SLVSHB7 datasheet.
How does Adaptive Headroom Voltage Control (AHVC) work in the TLC69611YBHR?
AHVC in the TLC69611YBHR dynamically regulates the LED supply voltage by monitoring the FB pin of the last device in the daisy chain. Only that FB connection is required to close the loop with the external DC/DC converter, reducing power loss across all current sinks. This architecture is described in Section 3 (Description) and illustrated in the "Simplified Schematic" of SLVSHB7.
TLC69611YBHR 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:
- 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-DSBGA (1.58x2.43)
TLC69611YBHR FAQ
1.How can I place an order for TLC69611YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69611YBHR 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 TLC69611YBHR reliable?
The price and inventory of TLC69611YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69611YBHR is usually 5 days.
3.What payment methods are accepted for TLC69611YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69611YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69611YBHR?
TLC69611YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69611YBHR 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 TLC69611YBHR?
For technical support, including TLC69611YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69611YBHR requirements.
6.How does Aetrix verify that TLC69611YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69611YBHR 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 TLC69611YBHR meets industry standards.
7.What is the process for return or replacement of TLC69611YBHR?
All TLC69611YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69611YBHR, 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 TLC69611YBHR part is unused and in its original packaging.
Return procedure for TLC69611YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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