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Texas Instruments TLC5916IPWR
- Part No.:
- TLC5916IPWR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC5916IPWR.pdf
- Description:
- IC LED DRVR LINEAR 120MA 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,596
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Product details
Overview
TLC5916IPWR 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 high-reliability LED signage where uniform brightness and fault monitoring are critical.
For engineers reviewing the TLC5916IPWR datasheet, TLC5916IPWR pinout, TLC5916IPWR application, or TLC5916IPWR equivalent, key selection criteria include its 30-MHz serial interface, R-EXT–based current programming, error-detection capability in Special Mode, and compatibility with cascaded LED driver architectures.
Technical Context
The TLC5916IPWR integrates an 8-bit shift register, output latches, and eight independent constant-current sinks with internal regulation circuitry. 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 control of LE(ED1) and OE(ED2) pins.
It implements open-load detection by comparing actual output current against a threshold (0.5 × target current), and includes thermal shutdown with hysteresis (15°C). Unlike the TLC5917, it lacks short-to-VLED detection but retains full open-load, short-to-GND, and overtemperature fault reporting via its 8-bit error register.
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/system rails |
| Max output voltage | 20 V - enables driving multi-LED strings or high-VF LEDs |
| Serial clock frequency | Up to 30 MHz - enables fast refresh rates in high-resolution LED panels |
| Fault detection | Open-load, short-to-GND, and overtemperature - reported per channel in error register |
| Operating temperature | –40°C to +125°C - suitable for industrial and automotive ambient environments |
Pinout & Package
TLC5916IPWR is housed in a 16-pin TSSOP package (5.00 mm × 4.40 mm), optimized for compact LED driver layouts with thermal efficiency and surface-mount compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return path for logic and current-sink circuits; must be low-impedance |
| SDI (Pin 2) | Serial data input | Accepts 8-bit LED on/off data on rising CLK edges; feeds shift register |
| CLK (Pin 3) | Clock input | Rising-edge triggered; controls data shift into shift register and SDO timing |
| LE(ED1) (Pin 4) | Latch enable / mode control | Latches shift register to output latch in Normal Mode; selects Special Mode function when pulsed with OE(ED2) |
| OUT0–OUT7 (Pins 5–12) | Constant-current sink outputs | Each independently drives cathode of LED string; sinks up to 120 mA with thermal foldback |
| VDD (Pin 16) | Power supply | 3.0–5.5 V input powering logic and current-regulator circuitry |
| R-EXT (Pin 15) | Current-setting reference | Connects external resistor to GND to define full-scale output current for all channels |
| SDO (Pin 14) | Serial data output | Shifts out latched LED data or 8-bit error status code in Special Mode |
| OE(ED2) (Pin 13) | Output enable / mode select | Active-low enables outputs; pulse initiates transition to Special Mode (error readback or gain adjust) |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor current programming | One R-EXT sets identical current across all 8 channels - simplifies BOM and calibration |
| 256-step global current gain | Runtime-adjustable gain (1/12 to 127/128) compensates inter-IC current mismatch for white-balanced displays |
| Schmitt-trigger inputs | CLK, LE(ED1), OE(ED2), and SDI tolerate slow-rising signals and reduce noise susceptibility |
| Thermal shutdown with hysteresis | Global and per-channel shutdown at ≥150°C; automatic restart after cooling ≥15°C below trip point |
| Cascadable serial interface | SDO connects directly to SDI of next TLC5916IPWR - enables daisy-chained multi-channel expansion |
Applications
| LED Signage Panels | Industrial Control Displays |
|---|---|
|
Use Scenario: Outdoor LED video billboards requiring uniform brightness and long-term reliability under variable ambient temperatures. IC Role / Device Role / Timing Role: Constant-current sink driver managing individual LED segments; provides open-load fault detection to prevent partial panel failure. Use Value: ±3% inter-channel current matching ensures consistent luminance across thousands of LEDs; thermal shutdown prevents damage during extended high-brightness operation. |
Use Scenario: Factory HMI panels with segmented 7-segment or dot-matrix displays exposed to vibration and EMI. IC Role / Device Role / Timing Role: Serially controlled LED driver interfacing with microcontroller over 30-MHz SPI-like interface; handles LED on/off and fault reporting. Use Value: Schmitt-trigger inputs reject electrical noise; open-load detection alerts PLC controllers to failed LED segments before visual degradation occurs. |
| Gaming Machine Indicators | White Goods Status Lighting |
|
Use Scenario: Slot machines and arcade cabinets using dynamic RGB LED effects with strict safety and lifetime requirements. IC Role / Device Role / Timing Role: Current-regulated sink for high-intensity indicator LEDs; leverages Special Mode to verify LED continuity during power-up self-test. Use Value: Per-channel overtemperature detection isolates overheating LEDs without disabling entire display; error register allows rapid diagnostics via microcontroller. |
Use Scenario: Refrigerator and washing machine control panels with multi-color status LEDs operating continuously at elevated ambient temperatures. IC Role / Device Role / Timing Role: Low-power LED driver supporting 3.3-V MCU interface and 5.5-V tolerant VDD for flexible power rail design. Use Value: 3–120 mA adjustable range accommodates diverse LED types (red, green, blue, white); R-EXT programming enables factory-set brightness calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5917IPWR | Includes short-to-VLED detection; otherwise identical pinout, timing, and current specs | Required where LED string short-circuit monitoring is mandatory (e.g., automotive interior lighting) | Select TLC5917IPWR only if short-to-VLED fault detection is needed; TLC5916IPWR reduces cost and complexity where not required |
| MAX7219CWG+ | Integrated SPI interface, on-chip decoding, and brightness control; 8-digit/64-LED scan driver | Designed for multiplexed 7-segment displays; lacks per-channel current programming and open-load detection | Choose MAX7219CWG+ for fixed-format numeric displays; TLC5916IPWR preferred for custom LED arrays with analog current tuning |
Compared with TLC5917IPWR, TLC5916IPWR omits short-to-VLED detection but maintains identical current accuracy, thermal protection, and cascading capability - making it optimal for cost-sensitive signage where open-load and thermal faults dominate failure modes. Versus MAX7219CWG+, TLC5916IPWR offers superior current precision and direct fault visibility but requires external MCU-based data formatting.
Availability
TLC5916IPWR is available at Aetrix Electronics and suitable for LED signage panels, industrial HMIs, gaming machine indicators, and white goods status lighting requiring stable component supply and long-term production support.
Supply support for TLC5916IPWR 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 over 50 years of innovation in industrial and automotive electronics.
The TLC5916IPWR belongs to TI's constant-current LED driver product line, engineered specifically for high-reliability, high-density LED display systems demanding precise current matching, fault resilience, and scalable serial architecture.
FAQ
What is the maximum output voltage rating for the TLC5916IPWR?
The TLC5916IPWR supports a maximum output voltage of 20 V at its OUT0–OUT7 pins. This allows driving multiple LEDs in series per channel or accommodating high-forward-voltage LEDs such as white or blue types. The rating is absolute and applies regardless of current setting or ambient temperature, provided thermal limits are observed.
How does the TLC5916IPWR implement open-load detection?
The TLC5916IPWR detects open-load conditions by comparing actual channel current against a threshold equal to 0.5 × the target current. Detection only activates when the channel is enabled (OE low and latch set); the resulting error bit is stored in the internal 8-bit error register and readable via SDO in Special Mode. No external components are required.
Can the TLC5916IPWR be cascaded with other TLC5916IPWR devices?
Yes, the TLC5916IPWR supports seamless cascading: the SDO pin of one device connects directly to the SDI pin of the next. With shared CLK and LE(ED1)/OE(ED2) lines, up to dozens of TLC5916IPWR units can be daisy-chained to drive hundreds of LEDs using a single microcontroller SPI interface and minimal GPIO resources.
What is the purpose of the R-EXT pin on the TLC5916IPWR?
The R-EXT pin on the TLC5916IPWR connects to an external resistor tied to GND, establishing the reference for all eight output current sources. The value of this resistor determines the full-scale current (e.g., 720 Ω yields ~26 mA per channel at VDD = 3 V). This single-point adjustment eliminates per-channel trimming and ensures matched current across outputs.
Does the TLC5916IPWR support thermal protection?
Yes, the TLC5916IPWR includes both global and per-channel overtemperature protection. A global sensor shuts down all outputs above 150°C (with 15°C hysteresis), while individual channel sensors disable only affected outputs if local junction temperature exceeds threshold. Fault status remains latched and readable via the error register until returning to Normal Mode.
TLC5916IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-TSSOP
TLC5916IPWR FAQ
1.How can I place an order for TLC5916IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5916IPWR 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 TLC5916IPWR reliable?
The price and inventory of TLC5916IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5916IPWR is usually 5 days.
3.What payment methods are accepted for TLC5916IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5916IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5916IPWR?
TLC5916IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5916IPWR 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 TLC5916IPWR?
For technical support, including TLC5916IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5916IPWR requirements.
6.How does Aetrix verify that TLC5916IPWR is sourced from the original manufacturer or authorized distributors?
All TLC5916IPWR 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 TLC5916IPWR meets industry standards.
7.What is the process for return or replacement of TLC5916IPWR?
All TLC5916IPWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC5916IPWR, 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 TLC5916IPWR part is unused and in its original packaging.
Return procedure for TLC5916IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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