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Texas Instruments TLC6C5816QPWPRQ1
- Part No.:
- TLC6C5816QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC6C5816QPWPRQ1.pdf
- Description:
- IC LED DRV LIN PWM 50MA 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,518
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Product details
Overview
TLC6C5816QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC with 16-channel power DMOS open-drain outputs, configurable LED-open/short diagnostics on 8 channels, 45 V output voltage rating, and integrated CRC-based serial communication error detection. It serves as a fault-aware LED sink driver in safety-critical instrument cluster backlighting and E-shifter indicator systems.
For engineers reviewing the TLC6C5816QPWPRQ1 datasheet, TLC6C5816QPWPRQ1 pinout, TLC6C5816QPWPRQ1 application, or TLC6C5816QPWPRQ1 equivalent, key selection considerations include diagnostic channel configurability (8× DIAG-capable vs 16× basic drive), thermal shutdown at 175°C, 50 mA per channel capability, and HTSSOP-28 package compatibility with automotive PCB layout constraints.
Technical Context
The TLC6C5816QPWPRQ1 implements a 24-bit shift-register interface with separate RCK latch control, enabling synchronized update of configuration (8 bits) and output states (16 bits). Its dual active-low gate enables (G1/G2) allow independent control of two 8-channel groups for dynamic dimming or fault isolation.
Diagnostics operate via dedicated voltage comparators on paired DRAIN/DIAG pins (e.g., DRAIN1/DIAG0), with programmable thresholds: LED-open detection at 4.3 V ±0.3 V and LED-short detection at 1.22 V ±0.28 V. Faults-including thermal shutdown, command errors, and serial CRC mismatches-assert via open-drain ERR pin with 35 µs propagation delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 independent low-side DMOS drivers; 8 configurable as diagnostics inputs (DIAG0–DIAG14) |
| Max Output Voltage | 45 V - supports direct connection to 40 V battery-supplied LED strings without external clamping |
| Per-Channel Current | 50 mA - sufficient for high-brightness automotive LEDs with thermal derating up to 125°C ambient |
| Diagnostics Thresholds | LED-open: 4.3 V ±60 mV; LED-short: 1.22 V ±60 mV - precise fault discrimination under varying LED forward voltages |
| Thermal Shutdown | 175°C with 15°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking |
| Serial Interface Speed | 10 MHz SRCK - enables full 24-bit register write in ≤2.4 µs, suitable for real-time dashboard updates |
| Supply Range | 3 V to 5.5 V logic supply - compatible with standard automotive 3.3 V or 5 V MCU I/O domains |
Pinout & Package
Package: HTSSOP-28 (9.70 mm × 4.40 mm) with exposed thermal pad; optimized for automotive board space and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Logic power input | 3–5.5 V supply; requires local 0.1 µF ceramic decoupling for noise immunity |
| GND | Power ground reference | Mandatory connection to PCB ground plane; thermal pad must be soldered to polygon pour |
| EN | Active-low device enable | Puts device into 1 µA standby; resets all registers when high |
| CLR | Active-low register clear | Synchronously clears shift and storage registers; used at power-up initialization |
| RCK | Storage register latch clock | Rising edge transfers data from shift register to output control registers |
| SRCK | Shift register clock | Rising edge shifts SER IN data into internal 24-bit shift register |
| SER IN | Serial data input | Accepts 24-bit command stream (8 config + 16 output bits) for daisy-chain operation |
| SER OUT | Serial data output | Reads back 24-bit fault status (including 6-bit CRC remainder) in cascaded configurations |
| G1 / G2 | Group output enables | Active-low controls DRAIN0–DRAIN7 (G1) and DRAIN8–DRAIN15 (G2) independently |
| DRAINn / DIAGn | Configurable channel terminals | Paired pins (e.g., DRAIN1/DIAG0) support either independent drive or diagnostics monitoring |
| ERR | Open-drain fault feedback | Pulled low on any fault (thermal, diagnostics, CRC, command error); requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±4 kV and CDM ±1 kV ESD robustness |
| Configurable diagnostics architecture | Software-selectable mode per channel pair: 16× basic drive OR 8× drive + 8× diagnostics (DIAG0–DIAG14) |
| Integrated CRC communication integrity | 6-bit CRC remainder readback verifies 24-bit register writes without altering stored values |
| Command error detection | Hardware flags invalid register states (e.g., simultaneous DRAINn+1 and DIAGn enable) and forces safe default mode |
| Optimized EMI performance | Controlled slew rate on drain outputs reduces radiated emissions in sensitive automotive RF environments |
Applications
| Automotive Instrument Clusters | Automotive HVAC Control Panels |
|---|---|
Use Scenario: Backlighting of analog/digital gauges, warning icons, and customizable display segments in digital dashboards. IC Role / Device Role / Timing Role: Low-side LED sink driver with real-time fault reporting via ERR pin and diagnostic readback over SPI-compatible interface. Use Value: Enables ASIL-B–aligned system-level safety by detecting open/short LED faults before visual failure occurs, supporting ISO 26262 diagnostic coverage requirements. |
Use Scenario: Illumination of tactile buttons, rotary encoder indicators, and status LEDs on climate control interfaces. IC Role / Device Role / Timing Role: 16-channel serially controlled driver with group-enable (G1/G2) for zone-based dimming and independent fault monitoring. Use Value: Reduces MCU GPIO count and firmware complexity while maintaining per-button LED health visibility without additional sensing circuitry. |
| Automotive E-Shifter Indicators | Automotive Center Stacks |
Use Scenario: Position-indicating LEDs for electronic gear selectors requiring functional safety compliance. IC Role / Device Role / Timing Role: Safety-capable LED driver with latched fault registers (DIAGn_OPEN/SHORT) and thermal shutdown protection. Use Value: Provides hardware-enforced fault detection that persists across Gx toggling, ensuring no missed failures during gear transition sequences. |
Use Scenario: Status lighting for infotainment system power, connectivity, audio mute, and vehicle settings menus. IC Role / Device Role / Timing Role: Cascadable shift-register driver (SER IN/SER OUT) enabling scalable LED control across multi-layer center console PCBs. Use Value: Supports daisy-chained topology with single MCU SPI port, minimizing routing congestion and interconnect points in dense center-stack layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC6C5912-Q1 | 12-channel, fixed diagnostics on all channels; no DRAIN/DIAG pin reconfiguration; 40 V max output | Lacks flexible 8/16-mode diagnostics; suited for simpler, lower-channel-count systems without mixed diagnostic needs | Select when only 12 channels are required and full-diagnostics coverage is mandatory across all outputs |
| TLC6C598-Q1 | 16-channel, no integrated diagnostics; higher 60 mA per channel; identical HTSSOP-28 package and pinout | Provides raw drive capability only; requires external fault detection circuitry for safety-critical use cases | Select when maximum current headroom is prioritized and diagnostics are implemented externally or not required |
Compared with TLC6C5816QPWPRQ1, TLC6C5912-Q1 offers fewer channels and fixed diagnostics, limiting design flexibility, while TLC6C598-Q1 delivers higher current but omits on-chip fault detection-making TLC6C5816QPWPRQ1 the only option supporting both 16-channel density and software-configurable diagnostics in a single AEC-Q100 Grade 1 package.
Availability
TLC6C5816QPWPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, HVAC control panels, and E-shifter indicator systems requiring stable component supply across extended production lifecycles.
Supply support for TLC6C5816QPWPRQ1 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 automotive-grade ICs with decades of automotive qualification expertise.
The TLC6C5816QPWPRQ1 belongs to TI's Power Logic LED driver product line, designed specifically for functional-safety-aware automotive lighting where reliable fault detection and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum number of channels that can operate in diagnostics mode simultaneously on the TLC6C5816QPWPRQ1?
The TLC6C5816QPWPRQ1 supports diagnostics on up to eight channels simultaneously-specifically DRAIN0/DIAG0 through DRAIN14/DIAG14 in paired configuration. Each diagnostics channel requires its corresponding DRAINn pin to be driven and the DIAGn pin connected to monitor the same LED node. The device does not support diagnostics on more than eight channels at once, as only eight DIAG inputs are implemented internally.
How does the TLC6C5816QPWPRQ1 handle conflicting register settings between DRAINn+1 and DIAGn?
When the TLC6C5816QPWPRQ1 detects simultaneous enable of DRAINn+1 and DIAGn in the configuration register, it asserts the CMD_ERR flag, pulls the ERR pin low, and automatically defaults the channel to open-drain output mode-ignoring the DIAGn setting. The command error state persists until the faulty register value is corrected and the fault register is read back by the host MCU.
Does the TLC6C5816QPWPRQ1 require external components for LED-open diagnostics functionality?
No external components are required for basic LED-open diagnostics on the TLC6C5816QPWPRQ1. The device integrates internal voltage comparators and threshold references (4.3 V ±60 mV). However, proper PCB layout-especially low-impedance connections between DRAINn and DIAGn pins and minimized trace inductance-is essential to maintain diagnostic accuracy under fast-switching conditions.
What is the purpose of the thermal pad on the HTSSOP-28 package of the TLC6C5816QPWPRQ1?
The exposed thermal pad on the TLC6C5816QPWPRQ1's HTSSOP-28 package must be soldered to a large copper polygon pour to achieve optimal thermal performance. This connection reduces junction-to-board thermal resistance to 26.9°C/W, enabling sustained 50 mA per channel operation at 125°C ambient temperature and preventing premature thermal shutdown during peak load conditions.
Can the TLC6C5816QPWPRQ1 be used in non-automotive applications?
While the TLC6C5816QPWPRQ1 is AEC-Q100 qualified and optimized for automotive environments, it may be used in industrial or commercial LED driver applications requiring high reliability, diagnostics, and 45 V tolerance. However, its qualification documentation, failure-in-time (FIT) data, and long-term availability roadmap are specifically validated for automotive use cases.
TLC6C5816QPWPRQ1 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:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 45V
- Current - Output / Channel:
- 50mA
- Frequency:
- 10MHz
- Dimming:
- PWM
- Applications:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TLC6C5816QPWPRQ1 FAQ
1.How can I place an order for TLC6C5816QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC6C5816QPWPRQ1 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 TLC6C5816QPWPRQ1 reliable?
The price and inventory of TLC6C5816QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC6C5816QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC6C5816QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC6C5816QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC6C5816QPWPRQ1?
TLC6C5816QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC6C5816QPWPRQ1 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 TLC6C5816QPWPRQ1?
For technical support, including TLC6C5816QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC6C5816QPWPRQ1 requirements.
6.How does Aetrix verify that TLC6C5816QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC6C5816QPWPRQ1 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 TLC6C5816QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC6C5816QPWPRQ1?
All TLC6C5816QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC6C5816QPWPRQ1, 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 TLC6C5816QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC6C5816QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC6C5816QPWPRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
Infineon Technologies
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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