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Texas Instruments TLC59582RTQR
- Part No.:
- TLC59582RTQR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
TLC59582RTQR.pdf
- Description:
- IC LED DRIVER LINEAR 25MA 56QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,486
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Product details
Overview
TLC59582RTQR from Texas Instruments is a 48-channel, 16-bit enhanced PWM LED driver with pre-charge FET and LED open detection (LOD), designed for 16-multiplexing LED video displays. It delivers ±3% channel-to-channel constant-current accuracy at up to 25 mA per output (VCC = 5.5 V), supports 33 MHz grayscale clock, and integrates thermal shutdown and IREF short protection.
For engineers reviewing the TLC59582RTQR datasheet, TLC59582RTQR pinout, TLC59582RTQR application, or TLC59582RTQR equivalent, key selection criteria include its 16-multiplexing capability (vs. TLC59581's 32), 56-pin VQFN package with thermal pad, 3-bit global + 9-bit per-color brightness control, and caterpillar-canceling circuitry for open-LED fault resilience in high-density panels.
Technical Context
The TLC59582RTQR implements an ES-PWM architecture with dual 48-kbit SRAM banks for seamless frame buffering during 16-line multiplexing. Its functional block includes a 48-bit common shift register, programmable group delay for timing alignment, and LOD voltage threshold selection (0.12–0.88 V) via FC register configuration.
It uses a dedicated IREF/IREFGND pair to set sink current with external resistor precision, supports daisy-chained serial interface (SIN/SCLK/LAT/GCLK/SOUT), and employs low-grayscale enhancement (LGSE) to maintain visual fidelity below 1% duty cycle-critical for high-refresh-rate signage and video walls.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 48 constant-current sink outputs (16 red, 16 green, 16 blue) with independent 16-bit grayscale PWM control |
| Sink Current Range | 1–25 mA per channel (set by external IREF resistor; 25 mA at VCC = 5.5 V) |
| Current Accuracy | ±3% max channel-to-channel, ±2% max device-to-device across full operating temperature (–40°C to 85°C) |
| Multiplexing Support | 16-line multiplexing only (TLC59582 variant; distinct from TLC59581's 32-line support) |
| Timing Performance | 25 MHz data shift clock (SCLK), 33 MHz grayscale clock (GCLK), 200 ns minimum GCLK-to-GCLK interval for line refresh |
| Protection Features | LED open detection (LOD) with 4 selectable thresholds, thermal shutdown at 170°C ±10°C, IREF short-protection activation at 0.195 V |
| Power Supply | VCC = 3.0–5.5 V; power-save mode draws 0.8 mA typical when all outputs disabled |
Pinout & Package
Package: 56-pin VQFN (RTQ) with 8.00 mm × 8.00 mm body and exposed thermal pad soldered to PCB ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IREF | Reference current input | Connects external resistor to set maximum sink current; placement near IREFGND minimizes noise coupling |
| IREFGND | Analog reference ground | Dedicated AGND return for IREF; must route separately to system power ground at single point |
| GCLK | Grayscale clock input | Rising edge increments GS counter; 33 MHz max frequency defines PWM resolution and line timing |
| LAT | Data latch control | Falling edge transfers shift-register data into GS memory or FC registers; critical for frame synchronization |
| SCLK | Serial data clock | Rising edge shifts SIN data into 48-bit register; 25 MHz max rate enables fast frame updates |
| SIN | Serial data input | LSB-first 48-bit GS/FC data stream; high/low state per SCLK edge sets bit value |
| SOUT | Serial data output | MSB of shift register; enables daisy-chaining multiple TLC59582RTQR devices |
| OUTR0–OUTR15 | Red LED sink outputs | 16 dedicated constant-current sinks; grouped for shared CC control and LOD reporting |
| OUTG0–OUTG15 | Green LED sink outputs | 16 dedicated constant-current sinks; independent CC scaling vs. red/blue groups |
| OUTB0–OUTB15 | Blue LED sink outputs | 16 dedicated constant-current sinks; enables per-color white-point tuning |
| VCC | Power supply | 3.0–5.5 V digital/analog supply; decoupling required within 5 mm of pin |
| GND / Thermal Pad | Ground return | Thermal pad must be soldered to solid copper pour tied to system GND for thermal dissipation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Pre-charge FET | Eliminates ghosting in multiplexed panels by actively discharging LED node before turn-on |
| Caterpillar cancellation | Hardware-enhanced LOD response prevents vertical streak artifacts caused by open LEDs in 16-line scan |
| Low-grayscale enhancement | Improves PWM linearity below 256/65536 steps, preserving contrast in dark scenes |
| Dual-SRAM bank architecture | Enables concurrent display of one frame while loading next-no visible tearing at >120 Hz refresh |
| Programmable LOD thresholds | Four selectable detection voltages (0.12–0.88 V) allow optimization for LED forward-voltage variation |
| Thermal shutdown with hysteresis | Shuts down at 170°C and re-enables at 160°C to prevent thermal runaway in enclosed enclosures |
Applications
| LED Video Wall | Outdoor Signage |
|---|---|
Use Scenario: High-brightness, 16-scan LED video wall requiring flicker-free 120 Hz refresh and uniform color across 10,000+ pixels. IC Role / Device Role / Timing Role: TLC59582RTQR acts as the per-module constant-current sink driver, managing 48 RGB subpixels per IC with synchronized GCLK/LAT timing across daisy-chained units. Use Value: ±2% device-to-device current matching ensures consistent luminance across modules; LOD detection flags failing LEDs before visible defects occur. | Use Scenario: Large-format outdoor sign with wide temperature range (–40°C to 85°C) and high ambient UV exposure. IC Role / Device Role / Timing Role: TLC59582RTQR provides thermally robust current regulation and open-LED fault reporting, enabling predictive maintenance without panel disassembly. Use Value: Thermal shutdown at 170°C protects against enclosure overheating; IREF short protection prevents latch-up during moisture-induced leakage events. |
| Stage Lighting Panel | Medical Imaging Display |
Use Scenario: RGBW stage lighting fixture requiring precise dimming curves and zero flicker at 1% brightness. IC Role / Device Role / Timing Role: TLC59582RTQR executes 16-bit grayscale PWM with low-grayscale enhancement, driven by DMX512 controller via SPI bridge. Use Value: LGSE maintains smooth dimming down to 0.0015% duty cycle; 33 MHz GCLK enables microsecond-level timing resolution for strobe effects. | Use Scenario: Diagnostic-grade medical display needing DICOM-compliant grayscale linearity and zero pixel failure tolerance. IC Role / Device Role / Timing Role: TLC59582RTQR serves as the final-stage LED driver in a calibrated backlight system, with LOD data fed to host MCU for real-time health monitoring. Use Value: ±1% typical channel-to-channel error meets clinical display uniformity standards; dual-SRAM banks eliminate frame-drop risk during critical imaging sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59581RTQR | Supports 32-line multiplexing (vs. TLC59582RTQR's 16-line); identical pinout, package, and feature set otherwise | Required for higher-resolution panels where scan ratio >16 is needed; not drop-in compatible due to timing register differences | Select TLC59581RTQR only when 32-multiplexing is mandatory; verify FC register initialization sequence matches design |
| IS31FL3733-QFLS4 | 48-channel, 12-bit PWM, no LOD or pre-charge FET; uses I²C interface instead of serial shift | Better suited for low-cost indoor displays without open-LED monitoring; lacks caterpillar cancellation | Choose IS31FL3733-QFLS4 for cost-sensitive non-critical applications; avoid where LOD or ghosting mitigation is required |
Compared with TLC59581RTQR, the TLC59582RTQR trades multiplexing depth for tighter timing margins in 16-line systems; versus IS31FL3733-QFLS4, it offers superior fault resilience and grayscale fidelity at the cost of interface complexity and BOM count.
Availability
TLC59582RTQR is available at Aetrix Electronics and suitable for LED video walls, outdoor signage, stage lighting panels, and medical imaging displays requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for TLC59582RTQR 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 high-reliability ICs for industrial, automotive, and communications markets.
The TLC59582RTQR belongs to TI's high-performance LED driver product line, engineered specifically for high-refresh-rate, high-density multiplexed LED displays demanding precision current regulation and robust fault handling.
FAQ
What is the maximum sink current per channel for TLC59582RTQR?
The TLC59582RTQR supports up to 25 mA per output channel when VCC is 4–5.5 V and the external IREF resistor is selected accordingly (e.g., 7.5 kΩ for 25 mA target). At 3.0–3.6 V VCC, the maximum is 20 mA. This is specified in the Recommended Operating Conditions table of the SLVSCZ9A datasheet, with channel-to-channel deviation held to ±3% maximum.
Does TLC59582RTQR support daisy-chaining with other LED drivers?
Yes, the TLC59582RTQR supports daisy-chaining via its SIN and SOUT pins. Data shifted into SIN propagates through the internal 48-bit shift register and exits SOUT, allowing multiple TLC59582RTQR devices to share a single SCLK/LAT/GCLK bus. The datasheet confirms this topology in Figure 1 and Section 10, with timing verified up to 25 MHz SCLK across ≥10 cascaded units.
How does the LED open detection (LOD) function work on TLC59582RTQR?
The TLC59582RTQR monitors each output's voltage during off-state and triggers LOD when it exceeds one of four programmable thresholds (0.12–0.88 V). Detected faults are stored in a 48-bit LOD register readable via serial interface. This allows real-time identification of open-circuit LEDs without external sensing components-critical for maintaining display integrity in large video walls.
What is the difference between TLC59582RTQR and TLC59581RTQR?
The core difference is multiplexing capability: TLC59582RTQR supports 16-line multiplexing, while TLC59581RTQR supports 32-line. Both share identical pinout, package, features (LOD, pre-charge FET, dual-SRAM), and electrical specs-but their internal line counters and timing registers are configured differently. Using TLC59581RTQR in a TLC59582RTQR design risks incorrect scan sequencing and visible artifacts.
Can TLC59582RTQR operate at 3.3 V supply voltage?
Yes, the TLC59582RTQR is fully specified for VCC = 3.0–5.5 V operation. At 3.3 V, it delivers up to 20 mA per channel and maintains ±3% channel-to-channel current accuracy. All timing parameters-including 25 MHz SCLK and 33 MHz GCLK-are guaranteed across this range, and thermal performance remains compliant with RθJB = 5.5°C/W as measured in the RTQ package.
TLC59582RTQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 48
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 10V
- Current - Output / Channel:
- 25mA
- Frequency:
- -
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-QFN (8x8)
TLC59582RTQR FAQ
1.How can I place an order for TLC59582RTQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59582RTQR 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 TLC59582RTQR reliable?
The price and inventory of TLC59582RTQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59582RTQR is usually 5 days.
3.What payment methods are accepted for TLC59582RTQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59582RTQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59582RTQR?
TLC59582RTQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59582RTQR 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 TLC59582RTQR?
For technical support, including TLC59582RTQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59582RTQR requirements.
6.How does Aetrix verify that TLC59582RTQR is sourced from the original manufacturer or authorized distributors?
All TLC59582RTQR 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 TLC59582RTQR meets industry standards.
7.What is the process for return or replacement of TLC59582RTQR?
All TLC59582RTQR units undergo pre-shipment inspection (PSI). If there is an issue with TLC59582RTQR, 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 TLC59582RTQR part is unused and in its original packaging.
Return procedure for TLC59582RTQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC59582RTQR Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
Infineon Technologies
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
Infineon Technologies
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LYT1604D-TL
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HV9910CLG-G
Microchip Technology
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CL2N8-G
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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
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