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Texas Instruments TLC69611QPWPRQ1
- Part No.:
- TLC69611QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC69611QPWPRQ1.pdf
- Description:
- AUTOMOTIVE MINI-LED LOCAL DIMMIN
- Quantity:
- Payment:
- Shipping:
Inventory:3,095
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Product details
Overview
TLC69611QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive 16-channel constant-current LED sink driver optimized for local dimming backlight systems, delivering 60mA per channel at up to 20V output compliance, ±2% device-to-device and channel-to-channel current matching, and integrated UART/INT and SOUT/CLK_O diagnostic readback for automotive cluster displays.
For engineers reviewing the TLC69611QPWPRQ1 datasheet, TLC69611QPWPRQ1 pinout, TLC69611QPWPRQ1 application, or TLC69611QPWPRQ1 equivalent, this page provides verified technical context, validated package mapping (HTSSOP-28), confirmed daisy-chain interface timing, AHVC-based DC/DC control integration, and real-world diagnostic flag behavior (LOD/LSD/TSD) - all specific to the TLC69611QPWPRQ1 variant.
Technical Context
The TLC69611QPWPRQ1 implements a daisy-chainable two-wire serial interface supporting up to 20MHz data transfer with 1.8V/3.3V I/O compatibility, enabling scalable control of up to 1024 devices for 16,000-zone local dimming. Its adaptive headroom voltage control (AHVC) directly regulates external DC/DC converters via a single FB pin from the last device in chain.
It integrates SRAM-based brightness storage per channel, supports hybrid PWM/brightness register dimming with up to 15-bit resolution, and delivers diagnostics including per-zone LED open/short detection and thermal shutdown, reported via programmable UART/INT or two-wire SOUT/CLK_O outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 independent constant-current sinks for precise LED zone control |
| Max output current/voltage | 60mA per channel into up to 20V compliance - enables high-brightness automotive LCD backlights |
| Current accuracy | ±2% (typ.) device-to-device and channel-to-channel matching - ensures uniform luminance across display zones |
| Dimming resolution | Up to 15-bit brightness control - supports smooth grayscale transitions and VRR-compatible black insertion |
| Interface speed | Up to 20MHz daisy-chain data rate - allows rapid update of thousands of dimming zones without frame latency |
| Supply range | 3V to 5.5V VCC - compatible with standard automotive 3.3V/5V rail architectures |
| Quiescent current | ≤200μA standby / ≤3.5mA normal mode - minimizes system power overhead in always-on displays |
Pinout & Package
Package: HTSSOP-28 (PWP) with PowerPAD thermal pad; 9.7mm × 4.4mm body size; wettable flank option available; MSL Level-3, 260°C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Primary supply input | 3V–5.5V logic and analog rail powering internal circuitry and gate drivers |
| GND | Power and signal reference | Common return for all currents; connects to exposed thermal pad for thermal dissipation |
| OUT0–OUT15 | Constant-current sink outputs | 16 individually controlled low-side current sources driving LED cathodes |
| CLK_I / CLK_O | Serial clock input/output | Enables daisy-chain topology: CLK_I receives master clock; CLK_O forwards to next device |
| SIN / SOUT | Serial data input/output | SIN accepts command data; SOUT transmits diagnostic or status data downstream |
| FB | Feedback input for AHVC | Only the final device's FB connects to DC/DC converter - simplifies layout and reduces routing complexity |
| INT | Interrupt output | Active-low open-drain signal asserting on LOD, LSD, or TSD fault detection |
| UART pins | Diagnostic communication interface | Configurable as UART TX/RX for register-level readback and configuration (alternative to SOUT/CLK_O) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated operation from –40°C to +125°C ambient - meets automotive cockpit temperature requirements |
| Adaptive Headroom Voltage Control (AHVC) | Directs external DC/DC converter via single FB pin - eliminates per-device feedback routing and improves system efficiency |
| Programmable EMI reduction | Four integrated phase-shifting schemes and configurable drive strength - reduces radiated emissions without external filters |
| Dual diagnostic reporting paths | UART/INT and SOUT/CLK_O options - enables flexible integration with host MCU interrupt handling or daisy-chain status monitoring |
| Black insertion & VRR support | Hardware-accelerated timing features - improves motion clarity and reduces blur in high-refresh-rate automotive HUDs |
Applications
| Automotive Cluster Display | Automotive Heads-Up Display (HUD) |
|---|---|
Use Scenario: High-contrast, sunlight-readable instrument cluster with dynamic local dimming zones behind TFT glass. IC Role / Device Role / Timing Role: 16-channel constant-current sink controlling individual LED backlight segments synchronized to display frame updates. Use Value: Enables >10,000:1 contrast ratio and eliminates halo effects around speed/tach graphics through precise per-zone current regulation. | Use Scenario: Compact projection-based HUD requiring minimal thermal footprint and ultra-low latency dimming updates. IC Role / Device Role / Timing Role: Local dimming driver operating in hybrid PWM/register mode with black insertion timing for motion artifact suppression. Use Value: Achieves sub-1ms brightness update latency and supports variable refresh rate (VRR) alignment to reduce ghosting during rapid vehicle speed changes. |
| Central Information Display (CID) | Infotainment Touchscreen Backlight |
Use Scenario: 12-inch+ center console display with gradient dimming zones for media UI and navigation overlays. IC Role / Device Role / Timing Role: Daisy-chained node in multi-device architecture managing 16 contiguous dimming zones with SRAM-stored brightness values. Use Value: Supports seamless brightness ramping across zones using 15-bit resolution - eliminates visible step transitions during ambient light adaptation. | Use Scenario: Capacitive touchscreen with gesture-responsive backlight that dims non-touched regions while maintaining UI visibility. IC Role / Device Role / Timing Role: LED driver receiving real-time zone enable/disable commands over daisy-chain interface from touch controller. Use Value: Leverages per-zone open/short detection (LOD/LSD) to maintain backlight integrity during mechanical stress or moisture exposure in cabin environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC69611QRTWRQ1 | Same electrical specs; WQFN-24 package (4mm × 4mm) with wettable flanks and Level-1 MSL rating | Better thermal performance and smaller PCB footprint; preferred for space-constrained HUD modules | Select when board area or reflow profile constraints favor QFN over HTSSOP |
| TLC69661QPWPRQ1 | 60mA/50V output capability vs. TLC69611QPWPRQ1's 60mA/20V - higher compliance voltage for series-connected LEDs | Supports longer LED strings (e.g., 12–15 LEDs) in high-voltage CID backlight designs | Select only if >20V LED string forward voltage is required; otherwise identical functionality and pinout |
Compared with TLC69611QPWPRQ1, the TLC69611QRTWRQ1 offers identical performance in a thermally superior WQFN package, while the TLC69661QPWPRQ1 extends output compliance to 50V - making it suitable for higher-string-count backlights but unnecessary for standard 20V automotive LED configurations.
Availability
TLC69611QPWPRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, heads-up displays, and central information displays requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TLC69611QPWPRQ1 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 deep expertise in automotive-grade power management and display interface solutions.
The TLC696x1-Q1 product line was designed specifically for high-reliability automotive LCD local dimming, integrating diagnostics, EMI control, and daisy-chain scalability to address stringent ASIL-B system requirements in digital cockpits.
FAQ
What is the maximum LED string voltage supported by the TLC69611QPWPRQ1?
The TLC69611QPWPRQ1 supports up to 20V output compliance per channel, enabling direct drive of typical automotive LED strings with 5–6 white LEDs (VF ≈ 3.2V–3.6V each) in series. This matches common backlight topologies for cluster and HUD applications where compact form factor and thermal management are critical. Exceeding 20V risks damage to the internal current sinks.
Does the TLC69611QPWPRQ1 require external current-setting resistors?
No, the TLC69611QPWPRQ1 does not require external current-setting resistors. It uses internal precision current references and DAC-controlled current mirrors to deliver factory-trimmed 60mA per channel with ±2% matching. The global 8-bit Maximum Current (MC) register allows software-adjustable scaling of all channels simultaneously without hardware changes.
How does the adaptive headroom voltage control (AHVC) function in the TLC69611QPWPRQ1?
The AHVC in the TLC69611QPWPRQ1 monitors the voltage headroom across its 16 output channels and dynamically adjusts the feedback (FB) signal sent to an external DC/DC converter. Only the FB pin of the last device in a daisy chain must be connected - reducing PCB routing complexity and ensuring optimal efficiency across all connected drivers without per-device compensation networks.
Can the TLC69611QPWPRQ1 detect open-circuit and short-circuit faults on individual LED zones?
Yes, the TLC69611QPWPRQ1 performs per-channel LED open detection (LOD) and LED short detection (LSD) during active operation. Faults trigger the INT pin and are reportable via UART or SOUT/CLK_O. Each detection is latched until cleared by host command, enabling robust failure logging and fail-safe display behavior in ASIL-B systems.
What is the purpose of the SOUT and CLK_O pins on the TLC69611QPWPRQ1?
The SOUT (serial output) and CLK_O (clock output) pins enable daisy-chain diagnostic readback: SOUT transmits status data (e.g., LOD/LSD/TSD flags) downstream, while CLK_O forwards the master clock to the next device. This eliminates dedicated status lines and allows scalable fault monitoring across hundreds of TLC69611QPWPRQ1 devices using only two wires per stage.
TLC69611QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TLC69611QPWPRQ1 FAQ
1.How can I place an order for TLC69611QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC69611QPWPRQ1 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 TLC69611QPWPRQ1 reliable?
The price and inventory of TLC69611QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC69611QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC69611QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC69611QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC69611QPWPRQ1?
TLC69611QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC69611QPWPRQ1 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 TLC69611QPWPRQ1?
For technical support, including TLC69611QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC69611QPWPRQ1 requirements.
6.How does Aetrix verify that TLC69611QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC69611QPWPRQ1 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 TLC69611QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC69611QPWPRQ1?
All TLC69611QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC69611QPWPRQ1, 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 TLC69611QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC69611QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC69611QPWPRQ1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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