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Texas Instruments TLC69654YBHR
- Part No.:
- TLC69654YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69654YBHR.pdf
- Description:
- 64 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69654YBHR from Texas Instruments is a 16-channel constant-current LED driver optimized for LCD local dimming backlight systems, delivering 30mA per channel at up to 50V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution with PWM/hybrid dimming control.
For engineers reviewing the TLC69654YBHR datasheet, TLC69654YBHR pinout, TLC69654YBHR application, or TLC69654YBHR equivalent, key selection criteria include its adaptive headroom voltage control (AHVC), daisy-chain interface supporting up to 1024 devices, UART/INT and SOUT/CLK_O diagnostic readback options, and DSBGA-24 package for high-density display PCB layouts.
Technical Context
The TLC69654YBHR implements time-multiplexed local dimming control with 2/4/8× scan ratio compatibility via external TLC696x0 scan MOSFET controller, enabling precise per-zone LED current regulation across large-area displays. Its integrated SRAM stores per-channel brightness data for flicker-free updates.
It features programmable black insertion, variable refresh rate (VRR) support without flickering, and minimum brightness update latency - all coordinated through a high-speed 20MHz two-wire daisy-chain interface compatible with 1.8V/3.3V logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - supports direct integration with standard display power rails without LDO overhead. |
| Output Current / Compliance | 30mA per channel, 50V max - enables driving high-Vf LED strings in edge-lit or direct-lit LCD backlights. |
| Current Matching | ±2% device-to-device & channel-to-channel (typ.) - ensures uniform luminance across dimming zones without per-channel calibration. |
| Brightness Resolution | Up to 15-bit - provides fine-grained grayscale control for HDR-compatible local dimming performance. |
| Daisy-Chain Speed | Up to 20MHz - allows full 16-channel update in <1.6μs, minimizing motion blur and ghosting artifacts. |
| Diagnostic Reporting | LED open/short detection + thermal shutdown with UART/INT or SOUT/CLK_O readback - enables real-time fault isolation in production systems. |
| Power Consumption | ≤200μA standby, ≤3.5mA normal mode - reduces system-level thermal load and extends display subsystem efficiency. |
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 (3–5.5V) for internal logic and current sinks; decoupling required near pin. |
| GND | Ground reference | Common return for analog/digital domains; connects to exposed thermal pad for thermal management. |
| CLK_I | Serial clock input | Master-synchronized timing signal for daisy-chain data latching; 1.8V/3.3V compatible. |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or host controller. |
| SOUT | Serial data output | Drives downstream device in daisy chain; also used for diagnostic readback in two-wire mode. |
| CLK_O | Serial clock output | Passes synchronized clock to next device; enables deterministic timing across long chains. |
| FB | Feedback input | Connects only to FB of last device in chain to control DC/DC converter via AHVC for optimal headroom. |
| OUT0–OUT15 | Constant-current sinks | 16 dedicated LED sink terminals; each delivers regulated 30mA up to 50V compliance. |
| INT | Interrupt output | Active-low open-drain flag signaling LOD, LSD, or TSD events; configurable via register. |
| VLED | LED anode supply | High-side connection point for LED string anodes; routed to DC/DC output with external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Directly regulates DC/DC converter via single FB pin on last device - eliminates per-driver voltage margin overhead and improves system efficiency by >15%. |
| Programmable Black Insertion | Inserts controlled dark frames between refresh cycles - reduces motion blur in fast-moving video content without requiring panel firmware changes. |
| Variable Refresh Rate (VRR) Support | Maintains stable dimming behavior across dynamic frame rates (e.g., 48–144Hz) - prevents visible flicker during gaming or adaptive sync operation. |
| Minimum Brightness Update Latency | Sub-microsecond register-to-output response - enables real-time local dimming updates synchronized to video frame boundaries. |
| Integrated 4-Phase Shifting | Reduces EMI peak emissions by spreading switching energy across four interleaved timing phases - simplifies EMC filter design in slim display enclosures. |
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 current sink driver for LED zones, coordinated via daisy chain with TLC696x0 scan controller. Use Value: Enables >1,000,000:1 contrast ratio and HDR10+ compliance through precise per-zone current regulation and VRR-aligned updates. |
Use Scenario: Professional-grade monitors requiring flicker-free dimming and low-latency brightness adaptation. IC Role / Device Role / Timing Role: Local dimming engine managing 16 LED zones per IC, cascaded across multiple rows/columns. Use Value: Delivers consistent luminance uniformity and eliminates motion-induced banding via black insertion and sub-μs update latency. |
| Notebook Display Backlight | Tablet HDR Backlight System |
|
Use Scenario: Thin-bezel ultrabooks using edge-lit local dimming with minimal board space. IC Role / Device Role / Timing Role: Compact DSBGA-24 driver handling dual-edge LED strings with integrated diagnostics. Use Value: Reduces thermal footprint vs. QFN alternatives while maintaining 30mA/50V capability for high-brightness micro-LED arrays. |
Use Scenario: HDR-capable tablets requiring battery-efficient local dimming with real-time fault reporting. IC Role / Device Role / Timing Role: Power-optimized LED driver with ≤200μA standby current and UART-based thermal/fault telemetry. Use Value: Extends battery life by >12% in dimmed UI states and enables OEM-level reliability logging via INT/SOUT diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69654RTWR | Same electrical specs, but WQFN-24 (4mm × 4mm) package with exposed thermal pad - higher thermal dissipation capacity. | Better suited for high-power density designs where board area permits larger footprint and enhanced heat sinking. | Select TLC69654RTWR when thermal budget exceeds DSBGA limits or when reflow process favors QFN alignment stability. |
| TLC69652YBHR | Identical DSBGA-24 package and pinout, but rated for 30mA/20V - lower compliance voltage, same current accuracy and feature set. | Targeted at low-Vf edge-lit configurations where 50V headroom is unnecessary and cost optimization is prioritized. | Choose TLC69652YBHR for cost-sensitive consumer displays with standard white LEDs (Vf < 3.5V × 4–5 series). |
Compared with TLC69654RTWR, the TLC69654YBHR saves >60% board area but trades ~15°C junction rise under full load; versus TLC69652YBHR, it adds 30V headroom for future-proofing high-Vf or aging-compensated LED strings without redesign.
Availability
TLC69654YBHR is available at Aetrix Electronics and suitable for TV, monitor, notebook, and tablet backlight systems requiring stable component supply, high-reliability local dimming performance, and compact DSBGA packaging.
Supply support for TLC69654YBHR 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 TLC696x family is designed specifically for LCD local dimming backlight systems, integrating precision current sinks, daisy-chain control, and display-quality enhancements like black insertion and VRR support.
FAQ
What is the maximum number of TLC69654YBHR devices supported in a daisy chain?
The TLC69654YBHR supports daisy chaining up to 1024 devices, enabling control of over 32,000 local dimming zones in large-format displays. This scalability is achieved through deterministic 20MHz two-wire serial communication and dedicated CLK_O/SOUT forwarding, with no additional host GPIO overhead beyond the initial CLK_I/SIN pair.
Does TLC69654YBHR require external current-setting resistors?
No, the TLC69654YBHR does not require external current-setting resistors. It integrates factory-trimmed, laser-adjusted current references delivering 30mA per channel with ±2% matching. Global 8-bit maximum current (MC) setting allows software-based scaling without hardware modification.
How does Adaptive Headroom Voltage Control (AHVC) function in TLC69654YBHR?
AHVC in the TLC69654YBHR dynamically adjusts the DC/DC converter output voltage by monitoring the highest forward voltage among active LED strings via the FB pin - which must be connected only to the last device in the chain. This minimizes excess voltage drop across current sinks, reducing power loss and heat generation by up to 25% compared to fixed-headroom designs.
Can TLC69654YBHR detect individual LED failures within a string?
Yes, the TLC69654YBHR provides per-channel LED open detection (LOD) and LED short detection (LSD), identifying faults at the zone level. Each OUTx terminal is monitored independently, and fault status is reported via UART/INT or SOUT/CLK_O interfaces - enabling rapid identification and software mitigation of failed LED zones without full-system shutdown.
What is the operating temperature range for TLC69654YBHR?
The TLC69654YBHR is specified for operation from –40°C to +85°C ambient temperature, qualified per industrial standards. Its thermal shutdown detection (TSD) activates at junction temperatures exceeding safe limits, and the DSBGA-24 package's exposed die attach pad facilitates efficient heat transfer to the PCB ground plane.
TLC69654YBHR 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:
- 50V
- 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-DSBGA (1.58x2.43)
TLC69654YBHR FAQ
1.How can I place an order for TLC69654YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69654YBHR 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 TLC69654YBHR reliable?
The price and inventory of TLC69654YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69654YBHR is usually 5 days.
3.What payment methods are accepted for TLC69654YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69654YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69654YBHR?
TLC69654YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69654YBHR 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 TLC69654YBHR?
For technical support, including TLC69654YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69654YBHR requirements.
6.How does Aetrix verify that TLC69654YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69654YBHR 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 TLC69654YBHR meets industry standards.
7.What is the process for return or replacement of TLC69654YBHR?
All TLC69654YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69654YBHR, 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 TLC69654YBHR part is unused and in its original packaging.
Return procedure for TLC69654YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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