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Texas Instruments TLC69604YBHR
- Part No.:
- TLC69604YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69604YBHR.pdf
- Description:
- 64 MINI-LED MATRIX LOCAL DIMMING
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69604YBHR from Texas Instruments is a 16-channel constant-current LED driver for LCD local dimming backlight systems, supporting 4-time multiplexing with 30mA/20V output capability, ±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 DC/DC optimization in TV and monitor backlight units.
For engineers reviewing the TLC69604YBHR datasheet, TLC69604YBHR pinout, TLC69604YBHR application, or TLC69604YBHR equivalent, this device is selected for high-precision, daisy-chainable local dimming zones requiring low standby current (≤200μA), UART/interrupt or two-wire diagnostic readback, and programmable black insertion/VRR support.
Technical Context
The TLC69604YBHR implements time-multiplexed local dimming using internal SRAM per channel for brightness storage and supports up to 1024 devices in daisy chain for >32,000 zones. Its AHVC scheme directly controls external DC/DC via FB pin from the last device in chain.
Diagnostics include per-zone LED open/short detection and thermal shutdown, with configurable reporting via UART/INT or CLK_O/SOUT. Interface supports 20MHz data transfer with 1.8V/3.3V I/O compatibility and programmable drive strength for EMI reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sinks for independent LED zone control |
| Max output current/voltage | 30mA per channel into up to 20V load - enables direct driving of mid-voltage LED strings |
| Current accuracy | ±2% device-to-device and channel-to-channel error - ensures uniform dimming across zones |
| Brightness resolution | Up to 15-bit PWM/hybrid dimming - supports fine-grained luminance gradation |
| Supply voltage range | 3V to 5.5V - compatible with standard logic and system rails |
| Standby current | ≤200μA - minimizes power loss during display sleep modes |
| Data interface | 2-wire daisy chain, 20MHz max rate - reduces PCB routing complexity vs parallel interfaces |
Pinout & Package
Package: DSBGA-24 (YBH), 1.58mm × 2.43mm, 0.4mm max height, SNAGCU ball finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | 3V–5.5V main supply for logic and analog circuitry |
| GND | Ground reference | Common return path for all currents and signals |
| CLK_I | Input clock | Accepts master clock for synchronous daisy-chain timing |
| SIN | Serial data input | Receives configuration and brightness data from upstream device |
| SOUT | Serial data output | Drives downstream device in daisy chain; used for diagnostic readback |
| CLK_O | Output clock | Propagates synchronized clock to next device; part of two-wire readback path |
| FB | Feedback input | Connects only on last device in chain to regulate DC/DC output voltage |
| OUT0–OUT15 | Constant-current outputs | 16 dedicated sink terminals for LED cathode connection per local dimming zone |
| INT | Interrupt output | Active-low signal indicating LOD/LSD/TSD fault conditions |
| UART_TX/RX | Diagnostic interface | Configurable UART pins for register-level diagnostics and configuration |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive headroom voltage control (AHVC) | Reduces power loss by dynamically adjusting DC/DC output to match required LED forward voltage |
| Programmable black insertion | Inserts controlled black frames between refresh cycles to improve contrast and reduce motion blur |
| Variable refresh rate (VRR) support | Maintains flicker-free operation during dynamic frame rate changes in gaming or video playback |
| Per-zone LED open/short detection | Enables real-time fault isolation without external sensing components |
| 4-phase-shifting EMI reduction | Lowers peak radiated emissions by distributing switching energy across multiple phases |
Applications
| TV Backlight Systems | Monitor Backlight Systems |
|---|---|
Use Scenario: High-end 4K/8K LCD TVs implementing full-array local dimming with >1000 zones. IC Role / Device Role / Timing Role: Primary constant-current sink driver enabling per-zone brightness control and dynamic contrast enhancement. Use Value: Delivers 15-bit dimming resolution and <1ms brightness update latency to eliminate halo artifacts and improve HDR rendering fidelity. | Use Scenario: Professional-grade monitors for design and video editing requiring precise luminance uniformity. IC Role / Device Role / Timing Role: Local dimming controller managing 16–64 zones per driver, cascaded via daisy chain. Use Value: ±2% channel-to-channel current matching ensures consistent brightness across display regions without manual calibration. |
| Notebook Display Backlight | Tablet Display Backlight |
Use Scenario: Thin-bezel ultrabooks with edge-lit or mini-LED backlights requiring compact, low-power dimming control. IC Role / Device Role / Timing Role: Compact DSBGA-packaged LED driver interfacing with embedded controller over 2-wire serial bus. Use Value: 1.58mm × 2.43mm DSBGA package and ≤200μA standby current extend battery life and enable ultra-thin mechanical designs. | Use Scenario: High-brightness tablets used outdoors, needing adaptive dimming and thermal-aware operation. IC Role / Device Role / Timing Role: Thermal shutdown detection and LED short/open diagnostics ensure safe operation under variable ambient conditions. Use Value: Integrated TSD flag and INT pin enable immediate system response to overtemperature events without external monitoring circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69604RTWR | Same electrical specs but WQFN-24 (4mm × 4mm) package; higher thermal pad area | Better heat dissipation in high-density, high-ambient-temperature designs | Select when board layout allows larger footprint and thermal performance outweighs size constraints |
| TLC69602YBHR | Identical DSBGA-24 package and pinout, but 2-time multiplexing (vs 4-time) and lower channel count scalability | Targeted at simpler, lower-zone-count backlight architectures | Choose for cost-sensitive or space-constrained designs where 2× multiplexing suffices |
Compared with TLC69604RTWR and TLC69602YBHR, the TLC69604YBHR uniquely balances ultra-compact DSBGA packaging with 4-time multiplexing capability-enabling higher local dimming zone density per mm² while maintaining full diagnostic and VRR functionality.
Availability
TLC69604YBHR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and portable display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for TLC69604YBHR 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, targeting high-contrast, low-power, and flicker-free display performance in consumer and professional video equipment.
FAQ
What is the maximum number of TLC69604YBHR devices that can be daisy-chained?
The TLC69604YBHR supports daisy chaining up to 1024 devices in a single 2-wire serial chain, enabling control of more than 32,000 independent local dimming zones. This scalability is achieved through dedicated CLK_I/SIN inputs and CLK_O/SOUT outputs, with no additional address decoding or bus arbitration required. Each TLC69604YBHR retains its own 16-channel SRAM for brightness storage, ensuring deterministic update timing across the entire chain.
Does the TLC69604YBHR support both UART and two-wire diagnostic readback simultaneously?
No-the TLC69604YBHR supports UART/INT or CLK_O/SOUT diagnostic readback, but not both simultaneously. The mode is selected via configuration register settings at initialization. UART provides full register access and flexible command structure, while CLK_O/SOUT offers minimal pin count and deterministic timing for fault flag polling. Both methods report LED open/short and thermal shutdown events, and selection depends on system-level interface resource allocation and real-time diagnostic requirements.
What is the purpose of the FB pin on the TLC69604YBHR, and how should it be connected?
On the TLC69604YBHR, the FB (feedback) pin is used exclusively by the last device in the daisy chain to regulate the external DC/DC converter's output voltage. It must be connected only to the FB node of the DC/DC controller-no other TLC69604YBHR in the chain uses this pin. This architecture simplifies system layout and eliminates redundant feedback paths, allowing adaptive headroom voltage control (AHVC) to minimize power loss across the entire LED string array.
How does the TLC69604YBHR achieve flicker-free operation during variable refresh rate (VRR) transitions?
The TLC69604YBHR achieves flicker-free VRR operation through hardware-synchronized PWM timing generation and minimum brightness update latency (<1ms). Its internal timing engine dynamically adjusts dimming period boundaries to align with incoming frame sync signals, eliminating phase misalignment between LED current modulation and pixel data latching. This prevents visible intensity discontinuities during rapid frame rate changes, such as those encountered in gaming or adaptive streaming scenarios.
Is the TLC69604YBHR pin-compatible with other members of the TLC696x family?
Yes-the TLC69604YBHR shares identical DSBGA-24 (YBH) package dimensions, ball pitch (0.4mm), pin assignment, and thermal pad layout with all other YBH-packaged variants (e.g., TLC69602YBHR, TLC69608YBHR). This enables drop-in replacement within the same multiplexing class (2/4/8×) without PCB redesign. However, functional differences-including maximum current (30mA vs 60mA), voltage rating (20V vs 50V), and time-multiplexing ratio-must be verified against system requirements before substitution.
TLC69604YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x4
- 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:
- 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)
TLC69604YBHR FAQ
1.How can I place an order for TLC69604YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69604YBHR 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 TLC69604YBHR reliable?
The price and inventory of TLC69604YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69604YBHR is usually 5 days.
3.What payment methods are accepted for TLC69604YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69604YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69604YBHR?
TLC69604YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69604YBHR 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 TLC69604YBHR?
For technical support, including TLC69604YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69604YBHR requirements.
6.How does Aetrix verify that TLC69604YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69604YBHR 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 TLC69604YBHR meets industry standards.
7.What is the process for return or replacement of TLC69604YBHR?
All TLC69604YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69604YBHR, 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 TLC69604YBHR part is unused and in its original packaging.
Return procedure for TLC69604YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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