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Texas Instruments TLC69614YBHR
- Part No.:
- TLC69614YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69614YBHR.pdf
- Description:
- 64 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69614YBHR from Texas Instruments is a 16-channel constant-current LED driver for LCD local dimming backlight systems, supporting 4-time multiplexing with 60mA per channel at up to 20V compliance voltage, ±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 high-efficiency DC/DC coordination in TV and monitor backlight units.
For engineers reviewing the TLC69614YBHR datasheet, TLC69614YBHR pinout, TLC69614YBHR application, or TLC69614YBHR equivalent, key selection criteria include its DSBGA-24 package (1.58mm × 2.43mm), daisy-chain 20MHz serial interface, UART/interrupt or two-wire diagnostic readback, and support for variable refresh rate (VRR) without flicker in high-end display systems.
Technical Context
The TLC69614YBHR implements time-multiplexed local dimming control via integrated 16-channel constant-current sinks with programmable global 8-bit maximum current setting and per-channel 15-bit PWM/hybrid dimming. Its AHVC scheme dynamically adjusts the DC/DC output voltage using only the FB pin of the last device in a daisy chain, minimizing power loss across the LED string.
Diagnostics include per-zone LED open/short detection and thermal shutdown, with configurable reporting via UART/INT or CLK_O/SOUT two-wire output. The device supports black insertion and minimum-brightness update latency features to enhance contrast and motion clarity in dynamic HDR displays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - compatible with standard logic supply rails and low-power display subsystems. |
| Output Current | 60mA per channel - enables driving higher-brightness LED zones with fewer parallel strings. |
| Compliance Voltage | 20V - supports common mid-size LCD backlights with 4–6 LEDs per string in series. |
| Current Matching | ±2% (typ.) channel-to-channel - ensures uniform luminance across local dimming zones without software calibration. |
| Data Rate | Up to 20MHz daisy-chain interface - allows fast brightness updates for >100Hz VRR and real-time scene-adaptive dimming. |
| Power Consumption | ≤3.5mA (normal mode), ≤200μA (standby) - reduces system-level standby power in always-on display applications. |
| Brightness Resolution | Up to 15-bit - delivers fine-grained dimming control essential for HDR tone mapping and smooth gradient rendering. |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm body size, 0.4mm pitch, 0.4mm max height, SNAGCU ball finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail for internal logic and current sink bias; decoupling required within 2mm of pin. |
| GND | Ground reference | Analog/digital ground return shared across all 16 channels; must be low-impedance plane under device. |
| CLK_I | Serial clock input | Accepts 1.8V/3.3V-compatible clock signal; synchronizes daisy-chain data transfer at up to 20MHz. |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller in daisy-chain topology. |
| SOUT | Serial data output | Drives downstream device input; supports bidirectional readback when configured for two-wire diagnostics. |
| CLK_O | Serial clock output | Passes synchronized clock to next device; enables precise timing alignment across long daisy chains. |
| FB | Feedback input | Connects only to last device's FB pin to regulate DC/DC output voltage via AHVC-no external resistors needed. |
| OUT0–OUT15 | Constant-current outputs | 16 dedicated high-side current sinks; each drives one LED zone anode (cathodes grounded externally). |
| INT | Interrupt output | Active-low open-drain flag signaling LOD/LSD/TSD events; requires external pull-up for host microcontroller alert. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces DC/DC output voltage to minimum required for LED string forward drop + margin, cutting power loss by up to 30% vs fixed-headroom designs. |
| Programmable Black Insertion | Inserts controlled dark frames between video frames to reduce motion blur and improve perceived contrast in fast-moving content. |
| Variable Refresh Rate (VRR) Support | Enables flicker-free dimming updates synchronized to display frame rate changes (e.g., 48–144Hz), critical for gaming and cinematic HDR. |
| Per-Zone LED Diagnostics | Detects open-circuit (LOD), short-circuit (LSD), and thermal shutdown (TSD) on each of 16 outputs-enables fail-safe backlight management. |
| Dual Diagnostic Readback Modes | Selectable UART/INT or CLK_O/SOUT reporting lets designers choose between full register access or minimal pin-count fault signaling. |
Applications
| TV Local Dimming | Monitor Backlight Control |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs implementing full-array local dimming with >1000 zones. IC Role / Device Role / Timing Role: Primary 16-channel constant-current sink controlling individual LED zones in 4× time-multiplexed configuration. Use Value: Enables deep black levels and peak brightness >1000 nits through precise per-zone current regulation and VRR-synchronized dimming. |
Use Scenario: Professional-grade monitors requiring flicker-free operation and wide color gamut with HDR support. IC Role / Device Role / Timing Role: Local dimming driver interfacing with display timing controller via daisy-chain SPI for real-time zone updates. Use Value: Delivers <1ms brightness update latency and black insertion to eliminate motion blur during fast cursor movement or video playback. |
| Notebook Display Backlight | Tablet HDR Backlight |
Use Scenario: Thin-bezel ultrabooks with edge-lit or mini-LED backlights requiring compact, thermally efficient drivers. IC Role / Device Role / Timing Role: Compact DSBGA-24 LED driver enabling high-density local dimming in space-constrained PCB layouts. Use Value: 1.58mm × 2.43mm footprint and ≤200μA standby current extend battery life while maintaining HDR contrast performance. |
Use Scenario: Premium tablets with 120Hz+ displays needing seamless VRR transitions and low-latency UI responsiveness. IC Role / Device Role / Timing Role: Time-multiplexed backlight controller synchronized to GPU frame delivery for zero-flicker HDR rendering. Use Value: 15-bit dimming resolution and programmable minimum update latency ensure smooth gradient transitions and accurate tone mapping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69614RTWR | Same electrical specs and functionality, but in WQFN-24 (4mm × 4mm) package with exposed thermal pad. | Preferred for higher-power thermal dissipation or legacy board layouts designed for QFN footprints. | Select TLC69614RTWR when PCB layout accommodates larger 4mm × 4mm package and enhanced thermal performance is prioritized over board area. |
| TLC69612YBHR | Identical DSBGA-24 package and pinout, but rated for 30mA/20V output instead of 60mA/20V. | Suitable for lower-brightness or lower-power LED configurations where 60mA per channel is unnecessary. | Choose TLC69612YBHR when system brightness requirements allow 30mA per channel and cost optimization is a priority. |
Compared with TLC69614RTWR and TLC69612YBHR, the TLC69614YBHR uniquely combines the highest per-channel drive strength (60mA) with the smallest available footprint (DSBGA-24), making it optimal for space-constrained, high-brightness local dimming designs where thermal load remains within DSBGA limits.
Availability
TLC69614YBHR is available at Aetrix Electronics and suitable for TV, monitor, and notebook backlight systems requiring stable component supply, high channel count, and compact packaging for advanced local dimming architectures.
Supply support for TLC69614YBHR 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 high-performance analog chips for industrial, automotive, and consumer applications.
The TLC696x2/4/8 family is designed specifically for LCD local dimming backlight control, integrating time-multiplexing, adaptive voltage regulation, and advanced diagnostics to enable high-dynamic-range displays with minimal power overhead.
FAQ
What is the maximum output current capability of the TLC69614YBHR?
The TLC69614YBHR provides a maximum output current of 60mA per channel at up to 20V compliance voltage. This rating is confirmed in the official Texas Instruments datasheet (SLVSHB6, April 2023) under the "16 constant current sinks" specification for the TLC6961x variant group. The device maintains ±2% typical channel-to-channel current matching across this full range, ensuring consistent LED brightness in local dimming zones.
Does the TLC69614YBHR support daisy-chain configuration, and what is the maximum data rate?
Yes, the TLC69614YBHR supports high-speed daisy-chain topology using its dedicated CLK_I, SIN, SOUT, and CLK_O pins. The interface operates at up to 20MHz, enabling rapid brightness updates across large arrays-critical for VRR and real-time scene-adaptive dimming. Each device passes data and clock signals to the next, allowing cascading of up to 1024 devices for >32,000 total dimming zones, as specified in the functional description section of the datasheet.
How does the Adaptive Headroom Voltage Control (AHVC) function in the TLC69614YBHR?
The TLC69614YBHR implements AHVC by monitoring the voltage drop across its 16 current sinks and dynamically adjusting the DC/DC converter output via the FB pin-only the last device in the daisy chain connects FB to the DC/DC feedback node. This eliminates fixed overhead voltage, reducing power loss and heat generation. The feature is explicitly documented in the Description and Features sections of SLVSHB6, and requires no external components beyond the standard DC/DC loop compensation network.
What diagnostic functions does the TLC69614YBHR provide, and how are they reported?
The TLC69614YBHR provides per-channel LED open detection (LOD), LED short detection (LSD), and device thermal shutdown detection (TSD). These faults can be reported either via UART/INT interface (using dedicated INT pin and UART protocol) or via two-wire CLK_O/SOUT output, selectable by register configuration. Both modes are fully detailed in the Diagnostics section of SLVSHB6, and enable robust backlight failure handling without requiring additional external monitoring circuitry.
Is the TLC69614YBHR pin-compatible with other members of the TLC696x2/4/8 family?
Yes-the TLC69614YBHR shares identical pinout and package (DSBGA-24, YBH) with all other YBHR-suffixed variants including TLC69602YBHR, TLC69604YBHR, TLC69608YBHR, TLC69612YBHR, and TLC69618YBHR. Differences are limited to output current rating (30mA or 60mA) and compliance voltage (20V or 50V), which are factory-configured and not user-selectable. This allows direct substitution in existing layouts when electrical requirements align, as confirmed in TI's Package Outline drawings and Orderable Addendum.
TLC69614YBHR 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)
TLC69614YBHR FAQ
1.How can I place an order for TLC69614YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69614YBHR 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 TLC69614YBHR reliable?
The price and inventory of TLC69614YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69614YBHR is usually 5 days.
3.What payment methods are accepted for TLC69614YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69614YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69614YBHR?
TLC69614YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69614YBHR 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 TLC69614YBHR?
For technical support, including TLC69614YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69614YBHR requirements.
6.How does Aetrix verify that TLC69614YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69614YBHR 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 TLC69614YBHR meets industry standards.
7.What is the process for return or replacement of TLC69614YBHR?
All TLC69614YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69614YBHR, 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 TLC69614YBHR part is unused and in its original packaging.
Return procedure for TLC69614YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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