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Texas Instruments TLC69601YBHR
- Part No.:
- TLC69601YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-BGA, DSBGA
- Datasheet:
-
TLC69601YBHR.pdf
- Description:
- LOCAL DIMMING MINI-LED BACKLIGHT
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLC69601YBHR from Texas Instruments is a 16-channel constant-current LED sink driver for LCD local dimming backlight systems, delivering 30mA per channel at up to 20V compliance voltage, ±2% device-to-device and channel-to-channel current matching, and 15-bit brightness resolution. It enables high-contrast displays in TVs, monitors, and notebooks via daisy-chained PWM/hybrid dimming control.
For engineers reviewing the TLC69601YBHR datasheet, TLC69601YBHR pinout, TLC69601YBHR application, or TLC69601YBHR equivalent, key selection criteria include adaptive headroom voltage control (AHVC), UART/INT and SOUT/CLK_O diagnostic readback options, thermal shutdown detection, and DSBGA-24 package compatibility with space-constrained display PCB layouts.
Technical Context
The TLC69601YBHR implements a daisy-chainable two-wire serial interface supporting up to 20MHz data transfer and 1024-device cascading for 16,000-zone local dimming. Its SRAM-based brightness storage enables independent per-channel intensity control without host intervention between updates.
Adaptive headroom voltage control (AHVC) dynamically adjusts the DC/DC converter feedback (FB) voltage using only the last device's FB pin, minimizing power loss across the LED string. Integrated diagnostics include per-zone LED open/short detection and thermal shutdown reporting via programmable UART/INT or two-wire SOUT/CLK_O output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3V to 5.5V - supports direct connection to standard logic supply rails without external regulation. |
| Max Output Current / Voltage | 30mA / 20V - sets maximum per-channel LED drive capability for mid-voltage local dimming zones. |
| Current Matching | ±2% (typ.) device-to-device and channel-to-channel - ensures uniform luminance across adjacent dimming zones. |
| Brightness Resolution | Up to 15-bit - enables fine-grained grayscale control for flicker-free variable refresh rate (VRR) operation. |
| Interface Speed | Up to 20MHz daisy-chain data rate - allows full 16-channel update within <1µs for low-latency black insertion. |
| Power Consumption | ≤3.5mA (normal), ≤200µA (standby) - reduces system-level standby power in always-on display applications. |
| Operating Temperature | –40°C to +85°C - qualified for commercial and industrial display environments including edge-lit TV backlights. |
Pinout & Package
TLC69601YBHR uses a 24-ball DSBGA (YBH) package measuring 1.58mm × 2.43mm with 0.4mm pitch and 0.4mm max height. The exposed die pad (ball 25) provides thermal dissipation and must be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Primary power rail for internal logic and current sinks; decoupling required near pin. |
| GND | Ground reference | Common return for analog/digital circuits and current sink outputs; connects to thermal pad. |
| CLK_I | Serial clock input | Accepts master clock for daisy-chain timing; compatible with 1.8V/3.3V logic levels. |
| SIN | Serial data input | Receives configuration and brightness data from upstream device or 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 precise inter-device timing alignment. |
| FB | Feedback input | Connects only to last device in chain to control DC/DC converter output voltage via AHVC. |
| INT | Interrupt output | Active-low signal indicating fault conditions (LED open/short, thermal shutdown) for host polling. |
| OUT0–OUT15 | Constant-current sinks | 16 dedicated LED cathode connections; each delivers regulated 30mA up to 20V compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Headroom Voltage Control (AHVC) | Reduces power loss by dynamically adjusting DC/DC output to match minimum required LED forward voltage across all active zones. |
| Programmable Black Insertion | Inserts controlled dark frames between video frames to reduce motion blur without requiring frame buffer changes. |
| Variable Refresh Rate (VRR) Support | Enables flicker-free display updates at non-standard frame rates by synchronizing PWM timing to source VSYNC. |
| Dual Diagnostic Readback Modes | UART/INT mode supports detailed fault logging; SOUT/CLK_O mode enables lightweight status polling in resource-constrained systems. |
| EMI Optimization | Four programmable phase-shifting schemes and adjustable interface drive strength reduce radiated emissions during high-speed daisy-chain communication. |
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 strings behind LCD panel; coordinated via daisy-chain for zone-specific brightness updates. Use Value: Enables >1,000,000:1 dynamic contrast ratio through precise per-zone current regulation and sub-millisecond update latency. | Use Scenario: Professional-grade monitors with factory-calibrated color gamut and flicker-free operation. IC Role / Device Role / Timing Role: Local dimming controller interfacing with embedded display timing controller (TCON); supports VRR and black insertion for gaming and video editing. Use Value: Eliminates backlight-induced motion blur and flicker while maintaining consistent white point across brightness levels. |
| Notebook Edge-Lit Backlight | Tablet Display Power Management |
Use Scenario: Thin-profile notebooks where mechanical bezel constraints limit LED placement to top/bottom edges. IC Role / Device Role / Timing Role: Compact 16-channel driver mounted near LED strips; communicates via minimal two-wire interface to reduce routing complexity. Use Value: Achieves uniform edge-lit illumination with <±2% current matching, reducing hotspots and enabling battery-efficient dimming. | Use Scenario: Portable tablets requiring low-power display operation and thermal-safe backlight control. IC Role / Device Role / Timing Role: LED driver with integrated thermal shutdown and low standby current (<200µA) for always-on display modes. Use Value: Prevents overheating during extended use while extending battery life through adaptive dimming and efficient AHVC operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611YBHR | 60mA per channel (vs. 30mA), same 20V compliance and DSBGA-24 package. | Supports higher-brightness LED strings or fewer parallel strings per channel. | Select when higher per-channel current is required without changing PCB layout or thermal design. |
| TLC69601RTWR | Same electrical specs but in 4mm × 4mm WQFN-24 package with exposed thermal pad. | Offers improved thermal performance and easier rework vs. DSBGA; requires different land pattern. | Choose for prototyping, thermal-sensitive designs, or where DSBGA assembly yield is a concern. |
Compared with TLC69611YBHR and TLC69601RTWR, the TLC69601YBHR balances compact size, 30mA drive capability, and low-power operation-making it optimal for space-constrained, mid-brightness local dimming applications where thermal budget is moderate and PCB real estate is premium.
Availability
TLC69601YBHR is available at Aetrix Electronics and suitable for TV backlight systems, professional monitor designs, and notebook edge-lit displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TLC69601YBHR 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, embedded processing, and digital signal processing technologies with over 90 years of innovation history.
The TLC696x1 product line was designed specifically for high-precision, scalable LCD local dimming backlight control-targeting HDR-capable displays requiring thousands of independently controlled LED zones with minimal latency and high efficiency.
FAQ
What is the maximum number of TLC69601YBHR devices that can be daisy-chained?
The TLC69601YBHR supports up to 1024 devices in a single daisy chain, enabling control of 16,000 local dimming zones. This scalability is achieved through its high-speed two-wire interface operating at up to 20MHz, with minimal propagation delay per device. Each TLC69601YBHR retains its own SRAM-based brightness register, allowing autonomous zone updates without continuous host intervention.
Does the TLC69601YBHR support both PWM and analog dimming modes?
The TLC69601YBHR implements hybrid dimming-not pure analog-using an 8-bit global maximum current (MC) setting combined with up to 15-bit PWM resolution for fine brightness control. It does not provide true analog (voltage-controlled) current adjustment. The hybrid approach maintains high efficiency and avoids color shift issues common with analog dimming in LED backlights.
How does Adaptive Headroom Voltage Control (AHVC) function in the TLC69601YBHR?
AHVC in the TLC69601YBHR dynamically adjusts the DC/DC converter output voltage by monitoring the highest forward voltage among active LED strings in the chain. Only the FB pin of the last TLC69601YBHR in the daisy chain connects to the DC/DC feedback node, simplifying layout and minimizing wasted headroom. This reduces power dissipation and improves overall system efficiency, especially during partial-screen dimming scenarios.
What diagnostic functions are available on the TLC69601YBHR and how are they reported?
The TLC69601YBHR provides three hardware-level diagnostics: LED open detection (LOD), LED short detection (LSD), and thermal shutdown detection (TSD). These are reported either via UART/INT mode (detailed fault register access over UART with interrupt assertion) or two-wire SOUT/CLK_O mode (compact status bitstream output synchronized to CLK_O). Both methods allow real-time fault identification without halting normal dimming operation.
Is the TLC69601YBHR pin-compatible with other members of the TLC696x1 family?
Yes-the TLC69601YBHR shares identical pinout and package (DSBGA-24 YBH) with TLC69611YBHR, TLC69651YBHR, and TLC69661YBHR. Electrical differences (e.g., 30mA vs. 60mA output, 20V vs. 50V compliance) are implemented internally and do not affect board layout. This allows design reuse across brightness and voltage requirements without PCB revision.
TLC69601YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- TLC696x1
- 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)
TLC69601YBHR FAQ
1.How can I place an order for TLC69601YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69601YBHR 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 TLC69601YBHR reliable?
The price and inventory of TLC69601YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69601YBHR is usually 5 days.
3.What payment methods are accepted for TLC69601YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69601YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69601YBHR?
TLC69601YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69601YBHR 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 TLC69601YBHR?
For technical support, including TLC69601YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69601YBHR requirements.
6.How does Aetrix verify that TLC69601YBHR is sourced from the original manufacturer or authorized distributors?
All TLC69601YBHR 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 TLC69601YBHR meets industry standards.
7.What is the process for return or replacement of TLC69601YBHR?
All TLC69601YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TLC69601YBHR, 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 TLC69601YBHR part is unused and in its original packaging.
Return procedure for TLC69601YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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