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Texas Instruments TLC59711PWP
- Part No.:
- TLC59711PWP
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TLC59711PWP.pdf
- Description:
- IC LED DRVR LINEAR 60MA 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:909
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Product details
Overview
TLC59711PWP from Texas Instruments is a 12-channel, 16-bit enhanced-spectrum PWM RGB LED driver with integrated 3.3-V linear regulator and watchdog timer. It delivers constant-current sink outputs (60 mA per channel), supports 65536-step grayscale control per channel and 128-step global brightness control per color group (R/G/B), and operates across 4 V to 17 V supply range - used in high-fidelity architectural LED signage and programmable stage lighting systems.
For engineers reviewing the TLC59711PWP datasheet, TLC59711PWP pinout, TLC59711PWP application, or TLC59711PWP equivalent, key selection considerations include its cascading two-wire interface (10 MHz), thermal shutdown with auto-restart, ±1% typical channel-to-channel current matching, and HTSSOP-20 PowerPAD™ package for thermal management in dense LED arrays.
Technical Context
The TLC59711PWP implements a 224-bit shift register with 218-bit data latch, enabling full 16-bit GS + 7-bit BC + control bit programming per channel group. Its internal 7–12 MHz oscillator or external SCKI-synchronized GS clock supports precise timing control, while the 3.3-V linear regulator powers internal circuitry and can supply external logic.
Each of the 12 outputs (OUTR0–3, OUTG0–3, OUTB0–3) functions as an independently programmable constant-current sink with voltage compliance up to 17 V. The device features auto-display repeat, display timing reset, and a watchdog timer that detects external clock failure - critical for fail-safe operation in unattended LED installations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 12 constant-current sink outputs grouped as R/G/B × 4 - enables independent drive of RGB LED modules without external current-setting resistors per channel. |
| Grayscale Resolution | 16-bit (65536 steps) per channel - achieves smooth, flicker-free dimming down to 0.0015% brightness for cinematic color gradients. |
| Global Brightness Control | 7-bit (128 steps) per color group - allows real-time white-point tuning and uniform luminance scaling across large LED walls. |
| Max Sink Current | 60 mA per channel (typ), set by single IREF resistor - simplifies BOM and ensures ±1% channel-to-channel matching at 25°C. |
| Supply Range | VCC = 4 V to 17 V (internal regulator mode); or direct 3.0 V to 5.5 V to VREG - supports wide-input industrial power rails and battery-backed controllers. |
| Data Interface | Two-wire serial (SDTI/SCKI) with 10 MHz max clock - enables daisy-chaining unlimited devices using minimal MCU GPIOs and no address decoding. |
| Thermal Protection | Thermal shutdown at TJ ≥ 150°C with 10°C hysteresis and auto-restart - prevents permanent damage during sustained overdrive or poor heatsinking. |
Pinout & Package
HTSSOP-20 PowerPAD™ package (PWP) with exposed thermal pad on bottom side - provides low θJCbot (1.8°C/W) for efficient heat transfer to PCB ground plane in high-current LED driver applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IREF | Current reference input | Connects external resistor to GND to set maximum sink current (2–60 mA); open or shorted disables all outputs. |
| GND | Power ground | Primary return path for all output currents and internal regulator; must be low-impedance connection to PowerPAD. |
| OUTR0–OUTR3 | Red channel constant-current sinks | Four independent 60-mA sinks; each drives one red LED anode (common-anode RGB) with up to 17 V compliance. |
| OUTG0–OUTG3 | Green channel constant-current sinks | Four independent 60-mA sinks; identical electrical specs to red group but separately controllable via BC/BCG registers. |
| OUTB0–OUTB3 | Blue channel constant-current sinks | Four independent 60-mA sinks; supports separate global brightness scaling for blue to compensate for human eye sensitivity. |
| SDTI | Serial data input | Accepts 224-bit command/data stream; sampled on SCKI rising edge; compatible with 3.3-V logic levels. |
| SCKI | Serial clock input | Drives internal shift register and optionally serves as grayscale clock when EXTGCK = 1 - enables synchronous multi-device updates. |
| VCC | Main power supply | Input for internal 3.3-V regulator (4–17 V) or direct VREG supply (3–5.5 V); decoupling capacitor required at VREG pin. |
| VREG | 3.3-V regulator output/input | Provides regulated 3.3 V (±0.2 V) for internal logic; can source up to 25 mA and be paralleled with other TLC59711 VREG pins. |
| SDTO | Serial data output | Shifts out MSB of 224-bit register on SCKO falling edge - enables seamless cascading of multiple TLC59711PWP devices. |
| SCKO | Serial clock output | Re-drives and retimes SCKI for SDTO synchronization in daisy-chain configurations - eliminates timing skew across long chains. |
Key Features
| Feature | Design Value |
|---|---|
| Enhanced Spectrum PWM (ES-PWM) | 16-bit grayscale with optimized bit weighting reduces visible PWM artifacts and improves perceived smoothness vs standard PWM. |
| Unlimited cascading | Two-wire interface with SDTO/SCKO forwarding allows arbitrary-length chains without additional address lines or timing recalibration. |
| Watchdog timer | Detects SCKI clock failure and forces BLANK = 1 to turn off all LEDs - essential for safety-critical displays in public venues. |
| Auto display repeat | Hardware-based repetition of last programmed GS/BC data eliminates MCU polling overhead and ensures stable output during host sleep. |
| Internal/external GS clock select | Configurable via data latch bit (EXTGCK) to use internal oscillator (7–12 MHz) or SCKI - balances timing precision vs system clock dependency. |
| Display timing reset | Hardware signal (TMGRST) resets internal GS counter to zero - enables frame-synchronized updates across distributed LED arrays. |
Applications
| Architectural LED Facades | Stage & Entertainment Lighting |
|---|---|
Use Scenario: Large-scale outdoor LED panels with RGB pixel density > 10,000/m² requiring synchronized, flicker-free dimming across thousands of nodes. IC Role / Device Role / Timing Role: Constant-current sink driver for individual RGB subpixels; provides per-channel 16-bit grayscale and per-group 7-bit global brightness control. Use Value: Enables cinematic color fidelity and smooth motion rendering via ES-PWM, while thermal shutdown protects against ambient temperature extremes (-40°C to +85°C). |
Use Scenario: DMX-controlled moving head lights and LED wash fixtures needing real-time color mixing, strobing, and pattern sequencing. IC Role / Device Role / Timing Role: Primary LED current controller interfaced to MCU running lighting protocol stack; uses SCKI-synchronized GS clock for frame-locked effects. Use Value: Auto-display repeat and watchdog timer ensure continuous illumination even if host MCU freezes - meeting live-performance reliability requirements. |
| Programmable Retail Signage | Automotive Interior Ambient Lighting |
Use Scenario: Dynamic storefront displays with localized brightness zones, animated text, and daylight-adaptive luminance control. IC Role / Device Role / Timing Role: Cascaded driver for segmented LED strips; receives commands via two-wire bus from central controller with minimal wiring. Use Value: 10 MHz data rate and unlimited daisy-chaining reduce interconnect complexity and cost versus parallel-driven alternatives. |
Use Scenario: Multi-zone cabin lighting (footwell, door panels, dashboard) requiring precise white-point tuning and soft-start fade transitions. IC Role / Device Role / Timing Role: RGB LED driver with independent R/G/B group control; uses VREG pin to power adjacent microcontroller or sensor ICs. Use Value: ±1% channel-to-channel current matching ensures consistent color balance across zones without per-channel calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RGB LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS31FL3731-QFLS4 | 18-channel, 8-bit PWM, I²C interface, no integrated regulator, max 40 mA/channel | Lacks ES-PWM, thermal shutdown, and cascading capability; requires external 3.3-V supply | Choose for space-constrained designs needing higher channel count but lower resolution and simpler interface. |
| MAX7219CWG+ | 8-digit/64-segment LED driver, 8-bit intensity control, SPI interface, no RGB grouping or GS/BC separation | Designed for numeric/segment displays, not RGB pixel control; no per-color brightness scaling | Choose only for monochrome LED matrix applications where grayscale depth and color group control are unnecessary. |
Compared with IS31FL3731-QFLS4 and MAX7219CWG+, the TLC59711PWP uniquely combines 16-bit ES-PWM, per-group 7-bit global brightness, integrated 3.3-V regulation, and hardware watchdog - making it the only option qualified for high-reliability, high-fidelity RGB LED systems demanding both precision and fault resilience.
Availability
TLC59711PWP is available at Aetrix Electronics and suitable for architectural LED facades, stage lighting systems, and programmable retail signage requiring stable component supply, long-term lifecycle support, and traceable sourcing for production volumes.
Supply support for TLC59711PWP 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 expertise in precision analog IC design and high-volume manufacturing.
The TLC59711 product line was engineered specifically for high-performance RGB LED lighting systems - emphasizing thermal robustness, timing accuracy, and cascading scalability in commercial and industrial visual applications.
FAQ
What is the maximum LED forward voltage supported by the TLC59711PWP?
The TLC59711PWP supports LED supply voltages up to 17 V at its constant-current sink outputs (OUTR0–OUTB3). This allows driving up to five standard white LEDs (3.2 V each) in series per channel, or higher-voltage specialty LEDs, provided the VCC supply meets the 4 V to 17 V requirement for internal regulator operation.
How does the IREF pin set output current on the TLC59711PWP?
The IREF pin connects to GND via an external resistor (RIREF) to program the maximum sink current per channel. Using the formula RIREF = 1.21 V / (IOLCMax / 41), a 0.827 kΩ resistor sets IOLCMax to 60 mA (typical). Values between 0.82 kΩ and 24.8 kΩ yield 60 mA to 2 mA, respectively - all values confirmed in TI's SBVS181A datasheet Table 1.
Can the TLC59711PWP operate without the internal linear regulator?
Yes. The TLC59711PWP supports direct 3.0 V to 5.5 V supply to the VREG pin, bypassing the internal regulator. In this mode, VCC is left unconnected or tied to VREG, and the device draws power directly from the external 3.3-V rail - useful when a clean, low-noise supply is already available and thermal load on the IC must be minimized.
What is the purpose of the BLANK pin functionality in the TLC59711PWP?
The BLANK function is implemented as bit 213 in the internal 224-bit data latch - not a physical pin. When set to '1', it forces all 12 outputs OFF regardless of GS or BC settings, providing hardware-level emergency shutdown. Upon power-up, BLANK initializes to '1', requiring explicit write to '0' before enabling outputs - ensuring safe default behavior.
Does the TLC59711PWP support daisy-chaining, and how many devices can be cascaded?
Yes, the TLC59711PWP supports unlimited daisy-chaining via its SDTI → SDTO and SCKI → SCKO signal forwarding. Each device passes through the 224-bit command/data stream with retimed clock, eliminating timing skew. TI confirms "unlimited device cascading" in the official datasheet Feature list, validated in production systems with >100 devices per chain.
TLC59711PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 12
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 60mA
- Frequency:
- 10MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TLC59711PWP FAQ
1.How can I place an order for TLC59711PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59711PWP 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 TLC59711PWP reliable?
The price and inventory of TLC59711PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59711PWP is usually 5 days.
3.What payment methods are accepted for TLC59711PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59711PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59711PWP?
TLC59711PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59711PWP 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 TLC59711PWP?
For technical support, including TLC59711PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59711PWP requirements.
6.How does Aetrix verify that TLC59711PWP is sourced from the original manufacturer or authorized distributors?
All TLC59711PWP 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 TLC59711PWP meets industry standards.
7.What is the process for return or replacement of TLC59711PWP?
All TLC59711PWP units undergo pre-shipment inspection (PSI). If there is an issue with TLC59711PWP, 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 TLC59711PWP part is unused and in its original packaging.
Return procedure for TLC59711PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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