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Texas Instruments TLC69612YBHR
- Part No.:
- TLC69612YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69612YBHR.pdf
- Description:
- 32 MINI-LED MATRIX LOCAL-DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69612YBHR from Texas Instruments is a 16-channel constant-current LED driver optimized for LCD local dimming backlight systems, delivering 60mA per channel at up to 20V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution in hybrid PWM control mode.
For engineers reviewing the TLC69612YBHR datasheet, TLC69612YBHR pinout, TLC69612YBHR application, or TLC69612YBHR equivalent, this device supports high-density daisy-chained configurations (up to 1024 devices), adaptive headroom voltage control (AHVC) for DC/DC optimization, and integrated diagnostics including per-zone LED open/short detection and thermal shutdown reporting via UART/INT or two-wire SOUT/CLK_O.
Technical Context
The TLC69612YBHR implements time-multiplexed local dimming with 2×, 4×, or 8× scan ratio support - enabled by companion TLC696x0 scan MOSFET controllers - and integrates 16-channel SRAM for independent brightness storage per LED zone. Its daisy-chain interface operates at up to 20MHz with 1.8V/3.3V I/O compatibility.
System-level efficiency is enhanced through adaptive headroom voltage control (AHVC), which dynamically adjusts the VLED supply based on the highest forward voltage among active channels; only the FB pin of the last device in the chain connects to the DC/DC converter, simplifying layout and reducing component count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 constant-current sinks for independent LED zone control |
| Max Output Current / Voltage | 60mA per channel at 20V compliance - supports high-brightness, medium-voltage LED strings |
| Current Matching Accuracy | ±2% device-to-device and channel-to-channel error - ensures uniform luminance across zones |
| Brightness Resolution | Up to 15-bit (32,768 levels) - enables smooth gradation and flicker-free dimming |
| Daisy-Chain Data Rate | Up to 20MHz - allows rapid update of >32,000 zones in multi-device chains |
| Power Consumption | ≤3.5mA in normal mode; ≤200μA in standby - minimizes system idle power |
| Diagnostic Reporting | LED open/short detection (LOD/LSD) and thermal shutdown (TSD) with UART/INT or SOUT/CLK_O readback |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm, 0.4mm pitch, ball grid array with exposed thermal pad (Ball 25). RoHS-compliant, SnAgCu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | 3V–5.5V logic and internal circuitry power; decoupling required near pin |
| GND | Ground reference | Common return for analog/digital circuits and thermal pad connection |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain data synchronization (1.8V/3.3V compatible) |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or controller |
| SOUT | Serial data output | Drives downstream device in daisy chain; supports diagnostic readback in two-wire mode |
| CLK_O | Serial clock output | Propagates synchronized clock to next device; used with SOUT for readback |
| FB | Feedback input | Connects only to last device's FB pin for AHVC-controlled DC/DC regulation |
| OUT0–OUT15 | Constant-current outputs | 16 high-side current sinks driving LED cathodes; each supports 60mA/20V |
| INT | Interrupt output | Active-low open-drain flag for LOD, LSD, or TSD events; configurable via register |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces VLED overhead by dynamically tracking max forward voltage across active zones - cuts power loss and heat in DC/DC stage |
| Programmable Black Insertion & VRR Support | Enables flicker-free variable refresh rate operation and motion blur reduction without hardware changes |
| Minimum Brightness Update Latency | Ensures sub-frame timing consistency across large daisy chains - critical for real-time HDR tone mapping |
| 4-Phase Shifting EMI Reduction | Lowers conducted emissions by distributing switching edges across four phases - eases EMC compliance |
| Two-Wire Diagnostic Readback | Allows fault status retrieval using only CLK_O and SOUT pins - eliminates UART routing complexity in space-constrained layouts |
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: Primary constant-current sink driver in daisy-chained architecture, paired with TLC696x0 scan controllers for 8× time-multiplexing. Use Value: Delivers 60mA per channel at 20V with ±2% matching - maintains uniform black levels and prevents blooming during dark scene transitions. |
Use Scenario: Professional-grade monitors with factory-calibrated grayscale and wide color gamut. IC Role / Device Role / Timing Role: Zone-specific brightness actuator enabling per-region gamma correction and dynamic tone mapping. Use Value: 15-bit resolution and minimum latency updates preserve fine luminance gradients essential for medical imaging and CAD workflows. |
| Notebook Display Backlight | Tablet HDR Panel Driving |
|
Use Scenario: Thin-and-light notebooks where thermal and board space constraints limit DC/DC solution size. IC Role / Device Role / Timing Role: Integrated current sink + AHVC feedback node - replaces discrete current-setting resistors and external VLED regulation. Use Value: Standby current ≤200μA and compact DSBGA-24 package (1.58mm × 2.43mm) enable longer battery life and ultra-thin bezel designs. |
Use Scenario: Premium tablets with full-array local dimming for streaming HDR video and creative applications. IC Role / Device Role / Timing Role: High-speed daisy-chain node supporting 20MHz data transfer to update all zones within one display frame. Use Value: Integrated black insertion and VRR support eliminate flicker and judder during variable-frame-rate playback - no additional timing IC required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69612RTWR | Same electrical specs and register map, but in WQFN-24 (4mm × 4mm) package with exposed thermal pad | Preferred for higher-power thermal dissipation or legacy PCB footprints requiring QFN | Select when board layout accommodates larger 4mm × 4mm footprint and requires enhanced thermal performance |
| TLC69614YBHR | Identical DSBGA-24 package and pinout, but supports 4× time-multiplexing (vs. 2×/4×/8× in TLC69612); same 60mA/20V output | Optimized for mid-tier displays with fixed 4× scan architecture - fewer external scan MOSFETs needed | Choose when system uses dedicated 4× scan controller and seeks simplified BOM with identical package fit |
Compared with TLC69612RTWR, the TLC69612YBHR offers superior board-area efficiency in ultra-thin designs; compared with TLC69614YBHR, it provides flexible 2×/4×/8× scan ratio selection - enabling one driver design to scale across TV, monitor, and notebook platforms.
Availability
TLC69612YBHR is available at Aetrix Electronics and suitable for TV local dimming, professional monitor backlighting, and notebook/tablet HDR display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLC69612YBHR 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in power management and display interface solutions.
The TLC696x2/4/8 family was designed specifically for high-channel-count LCD local dimming systems - balancing precision current control, daisy-chain scalability, and integrated power optimization features like AHVC and low-latency updates.
FAQ
What is the maximum number of TLC69612YBHR devices that can be daisy-chained?
The TLC69612YBHR supports daisy-chain topologies of up to 1024 devices, enabling control of more than 32,000 local dimming zones. This scalability is achieved through its high-speed 20MHz serial interface and robust signal integrity design - verified in TI's reference layouts for long-chain reliability. Each TLC69612YBHR contributes 16 independently controllable channels to the total zone count.
Does the TLC69612YBHR require an external microcontroller to configure its registers?
Yes, the TLC69612YBHR requires an external host controller (e.g., MCU or SoC) to write configuration and brightness data via its SIN/CLK_I interface. It does not include onboard nonvolatile memory or autonomous operation - all settings, including global current, PWM parameters, and diagnostic enable bits, are loaded dynamically at startup or runtime. The TLC69612YBHR responds to standard SPI-like framing but uses proprietary command structure defined in the datasheet.
How does Adaptive Headroom Voltage Control (AHVC) function in the TLC69612YBHR?
AHVC in the TLC69612YBHR dynamically adjusts the VLED supply voltage by monitoring the highest forward voltage among active LED channels in real time. Only the FB pin of the final device in the daisy chain connects to the DC/DC converter's feedback node - eliminating individual per-device sensing and reducing layout complexity. This reduces power loss in the LED string and improves overall system efficiency by minimizing excess headroom voltage.
Can the TLC69612YBHR detect both LED open and short faults simultaneously?
Yes, the TLC69612YBHR performs per-channel LED open detection (LOD) and LED short detection (LSD) concurrently during normal operation. These diagnostics are implemented in hardware and reported collectively via interrupt (INT pin) or individually through UART/INT or two-wire SOUT/CLK_O readback. Fault status registers retain latched results until cleared by host software, ensuring no event is missed even during high-speed updates.
What is the operating temperature range for the TLC69612YBHR?
The TLC69612YBHR is rated for operation from –40°C to +85°C ambient temperature, qualified per industry-standard JEDEC conditions. This range covers commercial and industrial display applications including indoor TVs, office monitors, and portable computing devices. Thermal shutdown detection (TSD) activates above +125°C junction temperature to protect the device, and the DSBGA-24 package's exposed thermal pad aids heat dissipation under sustained 60mA/channel load.
TLC69612YBHR 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)
TLC69612YBHR FAQ
1.How can I place an order for TLC69612YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69612YBHR 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 TLC69612YBHR reliable?
The price and inventory of TLC69612YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69612YBHR is usually 5 days.
3.What payment methods are accepted for TLC69612YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69612YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69612YBHR?
TLC69612YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69612YBHR 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 TLC69612YBHR?
For technical support, including TLC69612YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69612YBHR requirements.
6.How does Aetrix verify that TLC69612YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69612YBHR 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 TLC69612YBHR meets industry standards.
7.What is the process for return or replacement of TLC69612YBHR?
All TLC69612YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69612YBHR, 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 TLC69612YBHR part is unused and in its original packaging.
Return procedure for TLC69612YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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