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Texas Instruments TLC6C5712QPWPRQ1
- Part No.:
- TLC6C5712QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC6C5712QPWPRQ1.pdf
- Description:
- IC LED DRV LIN PWM 75MA 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,906
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Product details
Overview
TLC6C5712QPWPRQ1 from Texas Instruments is a 12-channel automotive-grade constant-current-sink LED driver with full diagnostic capability, 8-bit dot correction per channel, and six programmable PWM inputs. It delivers precise current up to 75 mA per channel (set via external RIREF), supports output voltages up to 7 V, and operates from 3 V to 5.5 V supply. It is used in safety-critical automotive lighting such as cluster tell-tale indicators and PRNDL displays.
For engineers reviewing the TLC6C5712QPWPRQ1 datasheet, TLC6C5712QPWPRQ1 pinout, TLC6C5712QPWPRQ1 application, or TLC6C5712QPWPRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), adjacent-pin short detection, open-load/short-to-GND diagnostics during both active and inactive states, thermal prewarning at 125°C, and SPI daisy-chain support for multi-device systems.
Technical Context
The TLC6C5712QPWPRQ1 integrates twelve independent DMOS power transistors configured as constant-current sinks, each with programmable 8-bit linear dot correction (256 steps) and ±3% channel-to-channel current matching. Its 16-bit SPI interface enables register configuration, fault readback, and cascaded operation - with diagnostics including reference resistor open/short detection, PWM frequency supervision, and LED weak-supply monitoring via SENSE pin.
It implements dual-level thermal protection: pre-warning at 125–150°C junction temperature and shutdown at 150–165°C, with 15°C hysteresis. All 12 outputs support simultaneous or independently mapped PWM dimming across six inputs, with configurable slew rate (0.3 µs or 0.8 µs rise/fall) and 1–10 MHz SCK clock tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3 V to 5.5 V - supports direct connection to automotive 3.3 V or 5 V rails without LDO |
| Output Channels | 12 constant-current-sink channels - drives up to 12 discrete LEDs or LED strings in parallel |
| Max Output Current | 75 mA per channel - set by single external RIREF; enables uniform brightness scaling across all channels |
| Current Accuracy | ±3% channel-to-channel - ensures consistent LED luminance without per-channel trimming |
| Digital Control | 8-bit dot correction + 16-bit SPI - corrects LED binning variance and enables firmware-based calibration |
| Diagnostic Coverage | Open-load, short-to-GND, shorted-LED, adjacent-pin short, thermal prewarning/shutdown - detects faults even when channel is deactivated |
| PWM Inputs | 6 independent inputs with programmable mapping - supports mixed-color dimming (e.g., red/green/blue segments) using shared PWM sources |
Pinout & Package
28-pin HTSSOP PowerPAD™ package (4.40 mm × 9.70 mm) with exposed thermal pad for enhanced heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 28) | Signal ground reference | Reference for logic inputs and internal biasing; separate from PGND to isolate noise |
| PGND (Pin 25) | Power ground return | Low-impedance return path for all 12 output channel currents; must be connected to thermal pad |
| VCC (Pin 27) | Main supply input | 3 V–5.5 V digital and analog supply; powers internal logic, SPI, and bias circuits |
| IREF (Pin 26) | Current reference input | Connects external resistor to GND to set full-scale output current (K = IOUT/IIREF = 500) |
| SENSE (Pin 24) | LED supply monitor | Monitors LED rail voltage to detect weak supply (thresholds: 4.2 V or 2.77 V, selectable) |
| LATCH (Pin 3) | SPI data latch strobe | Rising edge captures 16-bit SPI data into internal shift register and updates output latches |
| SCK (Pin 1) | SPI clock input | Supports 1–10 MHz clock; synchronizes SDI data sampling and SDO output timing |
| SDI (Pin 2) | SPI serial data input | Accepts 16-bit command/data frames for configuration, dot correction, and register write |
| SDO (Pin 4) | SPI serial data output | Provides daisy-chain capability; outputs status/fault registers to next device in chain |
| ERR (Pin 5) | Open-drain error flag | Active-low signal indicating any unmasked fault (POR, PWM, thermal, open/short, IREF fault) |
| PWM0–PWM5 (Pins 12–17) | PWM dimming inputs | Active-low inputs; each maps to any of 12 outputs via 3-bit PWM_MAP_CH register |
| OUT0–OUT11 (Pins 6–11, 18–23) | Constant-current sink outputs | DMOS drain terminals; sink current to GND/PGND; tolerate up to 7 V drain-source voltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to 125°C ambient operation - meets automotive cluster and interior lighting requirements |
| Full-state diagnostics | Detects open-load, short-to-GND, and shorted-LED faults whether channel is ON or OFF - eliminates blind spots in safety monitoring |
| Adjacent-pin short detection | Identifies solder bridges or PCB trace shorts between neighboring pins - critical for high-density HTSSOP layout reliability |
| Reference resistor fault protection | Monitors IREF for open-circuit (>15 µA threshold) and short-circuit (>260 µA threshold) - prevents runaway current or zero-output failure |
| SPI register lock | LOCK_MAP and SPI content protection prevent accidental reconfiguration of PWM mapping or dot correction - ensures field reliability |
| Thermal prewarning | Asserts ERR at 125–150°C junction temperature - enables host MCU to reduce LED brightness before shutdown at 150–165°C |
Applications
| Cluster Tell-Tale Indicators | Panel and Button Backlighting |
|---|---|
Use Scenario: Driving red/green/yellow warning icons (e.g., oil, brake, ABS) in automotive instrument clusters with strict brightness consistency and fault visibility. IC Role / Device Role / Timing Role: Constant-current sink with per-channel dot correction and real-time open-load detection ensures each tell-tale illuminates reliably and reports failure immediately. Use Value: Eliminates manual LED binning; ±3% current matching maintains uniform icon luminance across temperature; ERR pin triggers dashboard warning within microseconds of fault. |
Use Scenario: Illuminating soft-touch buttons and segmented LCD panels in center consoles and door modules where color fidelity and dimming smoothness are critical. IC Role / Device Role / Timing Role: 12-channel sink with 6 PWM inputs enables independent RGB segment control and synchronized fade effects using shared PWM sources. Use Value: 8-bit dot correction compensates for LED forward-voltage drift over time; slow-slew-rate option (0.8 µs) suppresses EMI during button backlight transitions. |
| Shifter PRNDL Indicators | Sequential Turn Indicators |
Use Scenario: Driving illuminated gear-position letters (P/R/N/D/L) on electronic shifters, requiring high contrast, low ambient light visibility, and ASIL-B–compatible diagnostics. IC Role / Device Role / Timing Role: Automotive-qualified current sink with thermal prewarning and SENSE-based weak-supply detection ensures fail-safe operation during battery voltage sag. Use Value: Detects open-circuit LED failure while gear indicator is off - no missed warnings; 75 mA drive supports high-brightness white LEDs without external boost. |
Use Scenario: Controlling sequential amber LED arrays in side mirrors or rear lamps, where timing accuracy and fault resilience are essential for regulatory compliance. IC Role / Device Role / Timing Role: 12-channel output with programmable PWM mapping allows precise sequencing (e.g., OUT0→OUT1→OUT2) using a single PWM input and register-controlled enable timing. Use Value: td(PWM_ON/OFF) < 0.2 µs ensures sub-millisecond response to turn-signal commands; adjacent-pin short detection prevents cascade failure in dense LED layouts. |
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 |
|---|---|---|---|
| TPS92692QPWPRQ1 | Two-channel, higher-current (150 mA), integrated FET buck-boost controller with analog/digital dimming - no dot correction or 12-channel integration | Better suited for high-power headlamp or DRL applications; lacks multi-channel diagnostic granularity for cluster use | Select when driving fewer, higher-current LEDs with wide input voltage range (4.5 V–65 V); not a drop-in replacement for 12-channel distributed lighting |
| TLC6C5912QPWPRQ1 | Pin-compatible 12-channel variant without dot correction or PWM mapping; identical package, SPI, and diagnostic architecture but fixed 8-bit current scaling | Lower cost for applications needing only basic current regulation (e.g., non-color-critical status lights) without per-channel calibration | Choose for cost-sensitive designs where LED binning is tightly controlled and brightness uniformity is less critical than diagnostics |
Compared with TPS92692QPWPRQ1 and TLC6C5912QPWPRQ1, the TLC6C5712QPWPRQ1 uniquely combines 12-channel integration, per-channel 8-bit dot correction, and full-state diagnostics - making it the only option qualified for AEC-Q100 Grade 1 cluster applications requiring both precision luminance control and ASIL-B–level fault coverage.
Availability
TLC6C5712QPWPRQ1 is available at Aetrix Electronics and suitable for automotive cluster instrumentation, interior button backlighting, and PRNDL display systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.
Supply support for TLC6C5712QPWPRQ1 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 experience delivering AEC-Q100-qualified products for safety-critical vehicle systems.
The TLC6C5712QPWPRQ1 belongs to TI's automotive LED driver portfolio, designed specifically for high-reliability, multi-channel interior lighting where brightness uniformity, fault visibility, and thermal robustness are mandatory.
FAQ
What is the maximum output voltage tolerance for TLC6C5712QPWPRQ1?
The TLC6C5712QPWPRQ1 supports a maximum output voltage of 7 V at the OUTx pins relative to PGND. This allows direct driving of multi-LED strings (e.g., three white LEDs at ~2.8 V VF each) without external boost circuitry. The 7 V rating is validated across –40°C to 125°C ambient and applies to all 12 channels simultaneously.
How does TLC6C5712QPWPRQ1 handle open-load detection when an LED channel is turned off?
The TLC6C5712QPWPRQ1 performs open-load detection continuously - regardless of whether the channel is actively sinking current or in standby. It uses internal test current injection during inactive periods to verify LED continuity, ensuring no fault goes undetected during sleep or dimmed states. This behavior is confirmed in Section 7.3.4 of the datasheet.
Can TLC6C5712QPWPRQ1 be used in daisy-chain SPI configurations?
Yes, the TLC6C5712QPWPRQ1 supports true daisy-chain operation via its SDO pin, which outputs shifted data after internal register update. Up to 16 devices can be cascaded using a single SPI bus (SCK, SDI, LATCH), reducing MCU GPIO count and simplifying layout. Each device retains independent fault reporting through shared ERR line arbitration.
What is the purpose of the SENSE pin on TLC6C5712QPWPRQ1?
The SENSE pin monitors the LED supply rail voltage to detect weak or failing power sources. It supports two programmable thresholds (4.2 V or 2.77 V) with 0.1 V hysteresis. When supply drops below threshold, the device asserts ERR and logs WLS_FAULT, enabling host MCU to dim or disable LEDs preemptively - critical for maintaining functional safety in automotive systems.
Does TLC6C5712QPWPRQ1 require external components for basic operation?
Yes - a single external resistor (RIREF) connected between IREF and GND is mandatory to set full-scale output current. Optional components include pull-up resistors on PWM inputs (internal 105–230 kΩ weak pullups exist but may be insufficient for noisy automotive environments) and decoupling capacitors (0.1 µF ceramic near VCC and PGND). No external MOSFETs or inductors are needed.
TLC6C5712QPWPRQ1 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:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 12
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 7V
- Current - Output / Channel:
- 75mA
- 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
TLC6C5712QPWPRQ1 FAQ
1.How can I place an order for TLC6C5712QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC6C5712QPWPRQ1 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 TLC6C5712QPWPRQ1 reliable?
The price and inventory of TLC6C5712QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC6C5712QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TLC6C5712QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC6C5712QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC6C5712QPWPRQ1?
TLC6C5712QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC6C5712QPWPRQ1 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 TLC6C5712QPWPRQ1?
For technical support, including TLC6C5712QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC6C5712QPWPRQ1 requirements.
6.How does Aetrix verify that TLC6C5712QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TLC6C5712QPWPRQ1 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 TLC6C5712QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TLC6C5712QPWPRQ1?
All TLC6C5712QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLC6C5712QPWPRQ1, 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 TLC6C5712QPWPRQ1 part is unused and in its original packaging.
Return procedure for TLC6C5712QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC6C5712QPWPRQ1 Tags
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BCR402RE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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