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Texas Instruments TLC6C5716QDAPRQ1
- Part No.:
- TLC6C5716QDAPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 38-PowerTSSOP (0.240", 6.10mm Width)
- Datasheet:
-
TLC6C5716QDAPRQ1.pdf
- Description:
- IC LED DRV LIN PWM 50MA 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
TLC6C5716QDAPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive 16-channel constant-current RGB LED driver with full diagnostics, 50-mA per channel sink capability, 8-V output voltage headroom, integrated 12-bit PWM grayscale control, and dual-group (R/B) dot correction. It serves as the core backlight and indicator driver in safety-critical automotive displays.
For engineers reviewing the TLC6C5716QDAPRQ1 datasheet, TLC6C5716QDAPRQ1 pinout, TLC6C5716QDAPRQ1 application, or TLC6C5716QDAPRQ1 equivalent, key selection criteria include LED-open/short detection accuracy, group-level brightness control resolution, thermal warning thresholds, slew-rate programmability, and serial daisy-chain compatibility for multi-device local dimming systems.
Technical Context
The TLC6C5716QDAPRQ1 implements a dual-group constant-current architecture with eight red-sink (OUTR0–OUTR7) and eight blue-sink (OUTB0–OUTB7) channels, each independently adjustable via 7-bit dot correction and grouped under 8-bit brightness control. Its grayscale engine supports selectable 12-/10-/8-bit depth modes synchronized to an external GCLK input.
Diagnostics include LED-open detection (LOD) at 0.275–0.52 V threshold, LED-short detection (LSD) referenced to VSENSE, adjacent-pin short (APS) self-test, pre-thermal warning at 125–145°C, and IREF resistor open/short monitoring - all reported via ERR pin and readable status registers through the serial interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sink outputs: 8 red-group (OUTR), 8 blue-group (OUTB) |
| Max output current | 50 mA per channel, set by external IREF resistor (e.g., 0.96 kΩ yields 50 mA) |
| Output voltage range | 0.67 V to 8 V - supports common-anode LED strings up to 8 V forward drop |
| Grayscale resolution | Selectable 12-/10-/8-bit PWM depth per channel; global timing controlled by GCLK (up to 8 MHz) |
| Diagnostic coverage | LED-open, LED-short, output short-to-GND, adjacent-pin short, IREF fault, and thermal warnings (PTW/TSD) |
| Supply voltage | 3 V to 5.5 V VCC; independent SENSE pin monitors LED supply rail up to 8 V |
| Operating temperature | AEC-Q100 Grade 1: –40°C to +125°C ambient; junction rated to +150°C |
Pinout & Package
Package: HTSSOP-38 (6.20 mm × 12.50 mm) with exposed thermal pad (DAP), requiring PCB ground connection for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI (1) | Serial data input | Accepts 205-bit FC-BC-DC configuration or 12-bit command frames; enables daisy-chaining |
| SCK (2) | Data-shift clock input | Up to 4 MHz; controls bit-clock timing for serial register loading |
| LATCH (3) | Register update strobe | Transfers shift-register contents into active control latches (GS, BC, DC); triggers propagation delays (tpd7–tpd8) |
| GCLK (4,5,6) | Grayscale PWM clock input | Three bonded pins internally connected; drives 12-/10-/8-bit counter; max 8 MHz |
| BLANK (36) | Global output disable | Active-low; forces all outputs OFF and resets grayscale counter; required low during APS/LOD-LSD self-tests |
| ERR (20) | Open-drain error flag | Asserts low on any detected fault (LOD, LSD, APS, TSD, IREF fault); requires external pull-up |
| SDO (19) | Serial data output | Shifts out status (SID), grayscale (GS), or FC-BC-DC data; supports read-back verification |
| IREF (34) | Reference current input | Connects external resistor to set full-scale current (K = 40 mA/mA); monitored for open/short faults |
| SENSE (38) | LED supply sense | Monitors high-side LED supply voltage; used for LSD threshold referencing and overvoltage protection |
| OUTR0–OUTR7 (8,11,14,17,22,25,28,31) | Red-group constant-current sinks | Eight dedicated channels for red LEDs; each supports independent dot correction |
| OUTB0–OUTB7 (9,12,15,18,21,24,27,30) | Blue-group constant-current sinks | Eight dedicated channels for blue (or green) LEDs; grouped brightness control separate from red |
| VCC (35) | Digital supply input | 3 V–5.5 V logic and internal circuitry supply; decoupling required near pin |
| GND (33) | Power ground | Primary return path; connects to thermal pad for optimal thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Programmable slew rate (2 settings) | Reduces EMI and inrush current during group transitions - critical for automotive EMC compliance |
| Group delay between R/B outputs | Staggered turn-on minimizes peak supply current; avoids simultaneous switching noise in shared LED supplies |
| Integrated LOD/LSD/APS self-test | On-command diagnostics (e.g., SID Read, APS Check) enable runtime health verification without external test equipment |
| Negate bit toggle for error detection | Validates LOD/LSD register integrity by inverting stored values and checking consistency - prevents false fault reporting |
| Dual 7-bit dot correction per channel | Compensates for binning variance across red and blue LED strings independently, enabling uniform color temperature |
| 12-/10-/8-bit grayscale modes | Configurable depth balances display fidelity against timing budget - 12-bit mode supports >4096 intensity levels |
Applications
| Automotive Cluster Display | Automotive Local Dimming Backlight |
|---|---|
|
Use Scenario: High-reliability instrument cluster with RGB LED indicators and segmented backlight zones. IC Role / Device Role / Timing Role: Constant-current sink driver for red/blue indicator LEDs and local dimming zones; synchronizes PWM timing across 16 channels using GCLK. Use Value: Enables precise luminance matching across speedometer/tachometer segments and warning icons while meeting ASIL-B diagnostic coverage requirements. |
Use Scenario: LCD backlight with dynamic local dimming in center-stack infotainment display. IC Role / Device Role / Timing Role: Drives 16 individually controllable LED zones (8 red, 8 blue) with per-zone grayscale and group brightness scaling. Use Value: Achieves >10,000:1 contrast ratio via real-time zone dimming, with built-in LOD/LSD detection preventing black-screen failures. |
| Automotive HVAC Control Panel | Automotive Shift-by-Wire Indicator |
|
Use Scenario: Touch-sensitive HVAC panel with RGB status LEDs and backlighting behind physical buttons. IC Role / Device Role / Timing Role: Dual-group current sink managing red (error/warning) and blue (operational) LED sets; uses BLANK for blink synchronization. Use Value: Supports fail-safe visual feedback (e.g., red flash on overheat) with hardware-level fault reporting via ERR pin - no MCU polling required. |
Use Scenario: Gear position indicator with RGB LED ring showing P/R/N/D and drive mode (Eco/Sport). IC Role / Device Role / Timing Role: Drives sequential RGB illumination patterns using programmable grayscale and group delay to avoid current spikes. Use Value: Ensures deterministic LED response time (<260 ns propagation delay) and thermal resilience (TSD at 150°C) for safety-critical gear indication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20051ATP/V+T | 8-channel, 150-mA max, no integrated grayscale generator; requires external PWM controller | Lacks per-channel dot correction and LOD/LSD diagnostics; suited for simpler indicator-only use cases | Choose when lower channel count and external timing control are acceptable; not suitable for local dimming or AEC-Q100 Grade 1 systems |
| TPS61196RTVR | 12-channel, 60-mA max, integrated boost converter; no APS or PTW diagnostics | Designed for single-supply operation with boost; lacks dual-group brightness control and adjacent-pin short detection | Prefer for space-constrained designs needing integrated power conversion; avoid where full diagnostic coverage per AEC-Q100 is mandatory |
Compared with MAX20051ATP/V+T and TPS61196RTVR, the TLC6C5716QDAPRQ1 uniquely delivers 16-channel AEC-Q100-compliant operation with integrated grayscale, dual-group control, and comprehensive fault detection - making it the only option qualified for automotive local dimming and ASIL-B indicator systems.
Availability
TLC6C5716QDAPRQ1 is available at Aetrix Electronics and suitable for automotive cluster displays, local dimming backlights, and HVAC control panels requiring stable component supply, long-term automotive lifecycle support, and traceable AEC-Q100-certified sourcing.
Supply support for TLC6C5716QDAPRQ1 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 automotive ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The TLC6C5716QDAPRQ1 belongs to TI's automotive LED driver portfolio, engineered specifically for AEC-Q100 Grade 1 operation in instrument clusters, infotainment backlights, and interior ambient lighting - emphasizing diagnostic completeness, thermal robustness, and PWM timing precision.
FAQ
What is the maximum output voltage headroom supported by the TLC6C5716QDAPRQ1?
The TLC6C5716QDAPRQ1 supports up to 8 V output voltage across all 16 sink channels (OUTR0–OUTR7, OUTB0–OUTB7). This headroom allows driving common-anode LED strings with forward voltages up to 8 V while maintaining regulation - verified under recommended operating conditions with VSENSE = 8 V and IOUT = 50 mA.
How does the TLC6C5716QDAPRQ1 implement LED-open detection (LOD)?
The TLC6C5716QDAPRQ1 performs LED-open detection by monitoring voltage at each output pin during active sinking. When an open circuit occurs, the pin voltage rises above the LOD threshold (0.275–0.52 V, configurable via LOD_VOLTAGE bit), triggering a fault flag in the LOD_LSD register and asserting the ERR pin low. The self-test mode (LOD_LSD Self Test command 0x535) validates detector functionality.
Can the TLC6C5716QDAPRQ1 drive both red and green LEDs in the same design?
Yes - the TLC6C5716QDAPRQ1's dual-group architecture (OUTRn for red, OUTBn for blue/green) supports independent current and brightness control per group. Green LEDs can be assigned to the OUTB0–OUTB7 channels; their forward voltage must remain ≤8 V, and dot correction values should be calibrated separately to match luminance with red channels.
What is the purpose of the three GCLK pins (pins 4, 5, 6) on the TLC6C5716QDAPRQ1?
Pins 4, 5, and 6 are internally bonded GCLK inputs - a design choice to reduce package inductance and improve clock signal integrity for the high-speed grayscale PWM counter. All three pins must be connected to the same external clock source (up to 8 MHz); leaving any unconnected violates the recommended layout and may cause timing instability.
Does the TLC6C5716QDAPRQ1 support daisy-chaining multiple devices?
Yes - the TLC6C5716QDAPRQ1 supports serial daisy-chaining via SDI (input) and SDO (output). Data written to SDI propagates through the shift register and exits SDO after 205 bits, allowing cascaded configuration of multiple TLC6C5716QDAPRQ1 devices using a single microcontroller SPI interface without additional GPIO overhead.
TLC6C5716QDAPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 38-PowerTSSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- No
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 8V
- Current - Output / Channel:
- 50mA
- Frequency:
- 4MHz, 8MHz
- Dimming:
- PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-HTSSOP
TLC6C5716QDAPRQ1 FAQ
1.How can I place an order for TLC6C5716QDAPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC6C5716QDAPRQ1 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 TLC6C5716QDAPRQ1 reliable?
The price and inventory of TLC6C5716QDAPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC6C5716QDAPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC6C5716QDAPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC6C5716QDAPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC6C5716QDAPRQ1?
TLC6C5716QDAPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC6C5716QDAPRQ1 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 TLC6C5716QDAPRQ1?
For technical support, including TLC6C5716QDAPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC6C5716QDAPRQ1 requirements.
6.How does Aetrix verify that TLC6C5716QDAPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC6C5716QDAPRQ1 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 TLC6C5716QDAPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC6C5716QDAPRQ1?
All TLC6C5716QDAPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC6C5716QDAPRQ1, 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 TLC6C5716QDAPRQ1 part is unused and in its original packaging.
Return procedure for TLC6C5716QDAPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC6C5716QDAPRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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