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Texas Instruments TLC5916IDRG4
- Part No.:
- TLC5916IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC5916IDRG4.pdf
- Description:
- IC LED DRVR LINEAR 120MA 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,115
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Product details
Overview
TLC5916IDRG4 from Texas Instruments is an 8-channel constant-current LED sink driver IC designed for precise current control in LED display and lighting systems. It delivers 3–120 mA per channel with ±3% inter-channel current accuracy, supports 3.0–5.5 V supply, and features open-load and overtemperature detection. It is used in LED signage, video panels, and white goods where uniform brightness and fault monitoring are required.
For engineers reviewing the TLC5916IDRG4 datasheet, TLC5916IDRG4 pinout, TLC5916IDRG4 application, or TLC5916IDRG4 equivalent, key selection considerations include its 30-MHz serial interface, R-EXT–based current programming, error-detection capability via SDO, and compatibility with cascaded LED driver architectures.
Technical Context
The TLC5916IDRG4 integrates an 8-bit shift register, output latches, and eight independent constant-current sinks with shared R-EXT biasing. Its dual-mode operation-Normal Mode for data loading and Special Mode for error status readback or global current gain adjustment-relies on edge-triggered LE(ED1) and pulse-width–sensitive OE(ED2) control signals.
It implements open-load detection by comparing actual output current against 50% of target current (IOUT,Th = 0.5 × IOUT,target), and includes thermal shutdown with 150–200°C trip range and 15°C hysteresis. Unlike the TLC5917, it lacks short-circuit detection-confirmed by Device Comparison Table and Feature Description sections.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 8 independent constant-current sink outputs (OUT0–OUT7) |
| Output current range | 3 mA to 120 mA per channel, set by single R-EXT resistor |
| Current accuracy | ±3% max between channels; ±6% max between ICs |
| Supply voltage | 3.0 V to 5.5 V - supports both 3.3-V and 5-V logic systems |
| Max output voltage | 20 V - enables driving multi-LED strings or high-VF LEDs |
| Serial clock frequency | Up to 30 MHz - enables fast refresh in high-resolution LED displays |
| Error detection | Open-load and overtemperature detection only; no short-circuit detection |
Pinout & Package
Package: SOIC (16-pin), body size 9.90 mm × 3.91 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return for logic and current-sink paths; must be low-impedance |
| SDI (Pin 2) | Serial data input | Accepts 8-bit LED on/off data synchronized to CLK rising edge |
| CLK (Pin 3) | Clock input | Rising-edge–triggered shift register clock; supports up to 30 MHz |
| LE(ED1) (Pin 4) | Data latch / mode control | Latches shift register to output latch in Normal Mode; selects Special Mode when pulsed with OE(ED2) |
| OUT0–OUT7 (Pins 5–12) | Constant-current sink outputs | Each drives one LED cathode; sinks programmed current to GND |
| VDD (Pin 16) | Power supply | 3.0–5.5 V supply for logic and internal regulators |
| R-EXT (Pin 15) | Current-setting reference | Connects external resistor to GND to define full-scale output current |
| SDO (Pin 14) | Serial data output | Shifts out error status code or configuration data in Special Mode |
| OE(ED2) (Pin 13) | Output enable / mode select | Active-low output enable; pulse width determines entry into Special Mode |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor current programming | One R-EXT sets identical current across all 8 channels - simplifies BOM and layout |
| 256-step global current gain | Runtime-adjustable gain (1/12 to 127/128) compensates inter-IC current variation to <1% |
| Schmitt-trigger inputs | CLK, LE(ED1), OE(ED2), and SDI tolerate slow or noisy logic edges without false triggering |
| Open-load + overtemperature detection | Dedicated error status register readable via SDO - enables real-time LED health monitoring |
| Cascadable serial interface | SDO of one device connects directly to SDI of next - supports unlimited channel expansion |
Applications
| LED Signage | Video Billboards |
|---|---|
Use Scenario: Outdoor alphanumeric and graphic displays requiring consistent brightness across hundreds of LEDs under variable ambient temperature. IC Role / Device Role / Timing Role: TLC5916IDRG4 acts as a constant-current sink driver for individual LED segments, controlled via SPI-like serial interface from microcontroller. Use Value: ±3% inter-channel current matching ensures uniform luminance; open-load detection flags failed LEDs before visible degradation occurs. |
Use Scenario: Large-format dynamic advertising displays with high refresh rates and modular panel architecture. IC Role / Device Role / Timing Role: TLC5916IDRG4 provides per-pixel current regulation in cascaded configurations, synchronized by 30-MHz CLK for sub-millisecond update latency. Use Value: 30-MHz clock support enables >1 kHz frame rates; thermal shutdown prevents localized overheating in densely packed modules. |
| White Goods UI Panels | Gaming Machine Displays |
Use Scenario: Appliance control panels (ovens, washers) needing reliable, long-life LED indicators with ESD and thermal resilience. IC Role / Device Role / Timing Role: TLC5916IDRG4 drives status LEDs and segmented displays, interfaced via low-pin-count MCU GPIOs using serial protocol. Use Value: ±6% inter-IC current accuracy allows batch calibration; built-in overtemperature protection extends LED lifetime in enclosed enclosures. |
Use Scenario: Slot machines and arcade cabinets requiring vibrant, flicker-free LED animations with fault visibility for maintenance. IC Role / Device Role / Timing Role: TLC5916IDRG4 controls RGB LED clusters and animated borders, with error status read periodically during idle cycles. Use Value: Open-load detection identifies burnt-out LEDs in real time; 256-step gain tuning enables precise white balancing across color-mixed zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5917IDR | Includes short-circuit detection (TLC5916 does not); otherwise identical pinout, timing, and current specs | Required where LED string short faults must be distinguished from open faults (e.g., automotive interior lighting) | Select TLC5917IDR only if short-circuit detection is mandatory; otherwise TLC5916IDRG4 offers lower cost and same core functionality |
| MAX7219CWG+ | Integrated scan controller + 8×8 matrix driver; higher integration but fixed 5–10 mA per segment; no R-EXT current scaling | Best for multiplexed 7-segment or dot-matrix displays; not suitable for direct-drive high-current LED strings | Choose MAX7219CWG+ for compact 7-seg/8×8 designs; use TLC5916IDRG4 for flexible, high-current, non-multiplexed LED arrays |
Compared with TLC5917IDR, TLC5916IDRG4 omits short-circuit detection but retains identical current accuracy, thermal protection, and serial interface performance-making it optimal for cost-sensitive, open-fault–focused applications. Versus MAX7219CWG+, TLC5916IDRG4 provides scalable per-channel current and direct sink topology ideal for discrete LED strings.
Availability
TLC5916IDRG4 is available at Aetrix Electronics and suitable for LED signage, video billboards, and white goods requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for TLC5916IDRG4 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 power management technologies, with decades of experience in LED driver innovation.
The TLC591x product line was engineered specifically for high-reliability LED display and lighting systems demanding precise current regulation, fault diagnostics, and daisy-chain scalability - targeting industrial, commercial, and consumer visual interfaces.
FAQ
What is the maximum output voltage supported by the TLC5916IDRG4?
The TLC5916IDRG4 supports up to 20 V at its OUT0–OUT7 pins. This allows driving single high-forward-voltage LEDs or multiple LEDs in series per channel without external boost circuitry. The 20-V rating is absolute maximum and applies across the full operating temperature range, enabling robust operation in LED signage and backlighting applications where VF varies significantly.
Does the TLC5916IDRG4 support short-circuit detection like the TLC5917?
No, the TLC5916IDRG4 does not support short-circuit detection. As confirmed in the Device Comparison Table and Feature Description sections of the SLVS695D datasheet, short-load detection is exclusive to the TLC5917. The TLC5916IDRG4 provides open-load and overtemperature detection only - making it suitable for applications where short-circuit monitoring is not required.
How is output current set on the TLC5916IDRG4?
Output current on the TLC5916IDRG4 is set by connecting an external resistor (R-EXT) between Pin 15 (R-EXT) and GND. The value determines full-scale current across all 8 channels: IOUT = 12.4 V / REXT. For example, a 720 Ω resistor yields ~17.2 mA per channel. Current can be further fine-tuned in 256 steps via the global gain register in Special Mode.
Can multiple TLC5916IDRG4 devices be cascaded, and how does data flow work?
Yes, multiple TLC5916IDRG4 devices can be cascaded. Serial data enters the first device's SDI pin, shifts through its 8-bit register, and exits via SDO to the next device's SDI. This daisy-chain configuration allows unlimited channel expansion using only three MCU pins (CLK, LE, OE). The SDO output remains valid during cascading, preserving timing integrity up to 30 MHz.
What package type is used for the TLC5916IDRG4, and what are its thermal characteristics?
The TLC5916IDRG4 uses a 16-pin SOIC package (9.90 mm × 3.91 mm). Its junction-to-ambient thermal resistance (RθJA) is 87.4°C/W. It includes thermal shutdown at 150–200°C with 15°C hysteresis, and individual channel thermal sensing - ensuring safe operation in enclosed LED modules and high-density PCB layouts without forced airflow.
TLC5916IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 8
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 20V
- Current - Output / Channel:
- 120mA
- Frequency:
- 30MHz
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TLC5916IDRG4 FAQ
1.How can I place an order for TLC5916IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5916IDRG4 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 TLC5916IDRG4 reliable?
The price and inventory of TLC5916IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5916IDRG4 is usually 5 days.
3.What payment methods are accepted for TLC5916IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5916IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5916IDRG4?
TLC5916IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5916IDRG4 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 TLC5916IDRG4?
For technical support, including TLC5916IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5916IDRG4 requirements.
6.How does Aetrix verify that TLC5916IDRG4 is sourced from the original manufacturer or authorized distributors?
All TLC5916IDRG4 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 TLC5916IDRG4 meets industry standards.
7.What is the process for return or replacement of TLC5916IDRG4?
All TLC5916IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC5916IDRG4, 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 TLC5916IDRG4 part is unused and in its original packaging.
Return procedure for TLC5916IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5916IDRG4 Tags
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BCR420UFD-7
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