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Texas Instruments TLC59282RGET
- Part No.:
- TLC59282RGET
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TLC59282RGET.pdf
- Description:
- IC LED DRIVER LINEAR 45MA 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,981
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Product details
Overview
TLC59282RGET from Texas Instruments is a 16-channel constant-current LED sink driver with grouped delay noise reduction, operating from 3 V to 5.5 V supply, delivering up to 45 mA per channel (VCC > 3.6 V), and supporting daisy-chained serial control via SIN/SCLK/LAT/BLANK interface for video displays and message boards.
For engineers reviewing the TLC59282RGET datasheet, TLC59282RGET pinout, TLC59282RGET application, or TLC59282RGET equivalent, key selection criteria include its 4-group staggered output switching (reducing EMI), ±0.6% typical channel-to-channel current matching, 35 MHz data rate, and QFN-24 package thermal performance (θJCbot = 6.3°C/W).
Technical Context
The TLC59282RGET implements a 16-bit shift register cascaded to a 16-bit output latch, with Schmitt-triggered digital inputs (SIN, SCLK, LAT, BLANK) compatible with 3.3 V or 5 V logic. Data is shifted in on SCLK rising edges and latched into outputs on LAT high-to-low transition.
Constant-current value for all 16 channels is set by a single external resistor (RIREF) connected between IREF and GND, generating 1.205 V reference; output saturation voltage is 0.31 V (typ) at 20 mA. Four output groups (e.g., OUT0/7/8/15) switch with 20 ns inter-group delay to suppress surge-induced EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3 V to 5.5 V - supports direct connection to common logic rails without level-shifting. |
| Max Output Current | 45 mA per channel (VCC ≥ 3.6 V) - enables driving high-brightness LEDs without external current amplification. |
| Channel Matching | ±0.6% (typ) channel-to-channel - ensures uniform LED brightness across 16 outputs in display panels. |
| Data Rate | 35 MHz SCLK - allows full 16-bit update in ≤457 ns, suitable for high-refresh-rate signage. |
| Output Delay Groups | 4 groups with 20 ns inter-group spacing - reduces peak di/dt and conducted EMI during simultaneous on/off transitions. |
| Thermal Resistance | θJCbot = 6.3°C/W - enables efficient heat transfer from die to PCB ground plane via exposed thermal pad. |
| BLANK Pulse Width | 30 ns minimum - permits precise blanking control for PWM dimming synchronization without visible flicker. |
Pinout & Package
Package: VQFN-24 (RGE), 4 mm × 4 mm, 0.5 mm pitch, with exposed thermal pad (not internally connected to GND; must be soldered to PCB ground plane).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | LAT | Level-triggered latch input - holds shift register data in output latch while high; data stable when low. |
| 2 | OUT0 | Constant-current sink output - connects directly to LED cathode; supports up to 17 V LED string voltage. |
| 3–4 | OUT1–OUT2 | Constant-current sink outputs - grouped with OUT0/7/8/15 for staggered turn-on/turn-off timing. |
| 18–19 | OUT14–OUT15 | Constant-current sink outputs - final group in 4-stage staggered switching sequence. |
| 20 | IREF | Reference voltage output - provides 1.205 V (typ) to set all 16 channel currents via external RIREF resistor. |
| 21 | BLANK | Global output disable - forces all OUTn off when high; internally pulled up to VCC (500 kΩ typ). |
| 22 | SOUT | Serial data output - connects to SIN of next device in daisy chain; synchronous with SCLK rising edge. |
| 23 | SIN | Serial data input - Schmitt-triggered, accepts 3.3 V/5 V logic; LSB-first loading into 16-bit shift register. |
| 24 | SCLK | Serial clock input - Schmitt-triggered; controls data shift timing and SOUT edge alignment. |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel constant-current sink | Each channel independently controlled via serial interface; no external current-setting resistors per channel required. |
| Four-group staggered output switching | Reduces peak current surge by sequencing ON/OFF across four 4-channel groups with 20 ns inter-group delay. |
| Daisy-chain capability | SOUT-to-SIN cascading supports unlimited channel expansion using single controller GPIOs (SIN/SCLK/LAT/BLANK). |
| Low saturation voltage | 0.31 V (typ) at 20 mA - minimizes power loss and thermal stress in high-current LED applications. |
| Wide LED voltage support | Output voltage range up to +18 V - accommodates multi-LED strings (e.g., 5× white LEDs @ 3.2 V each). |
Applications
| Video Display Panels | Outdoor Message Boards |
|---|---|
|
Use Scenario: High-resolution indoor LED video wall with 16×16 pixel modules per driver IC. IC Role / Device Role / Timing Role: Constant-current sink driver controlling red/green/blue LED subpixels; LAT synchronizes frame updates across modules. Use Value: ±0.6% channel matching ensures uniform color balance; 35 MHz data rate enables 120 Hz refresh with minimal latency. |
Use Scenario: Large-format outdoor alphanumeric sign with high ambient light rejection requirements. IC Role / Device Role / Timing Role: LED current controller for high-luminance segments; BLANK pin enables synchronized PWM dimming across all modules. Use Value: 45 mA per channel drives high-efficiency LEDs at full brightness; 4-group delay suppresses EMI that could interfere with RF receivers. |
| Architectural LED Lighting | Industrial Status Indicators |
|
Use Scenario: Linear RGBW accent lighting strips with programmable color gradients and smooth transitions. IC Role / Device Role / Timing Role: Serially addressed current sink managing 16 independent LED zones; SOUT enables daisy-chaining for long runs. Use Value: Single RIREF resistor simplifies BOM and calibration; VCC range (3–5.5 V) matches standard 3.3 V or 5 V system rails. |
Use Scenario: Factory floor HMI panel with 16 status LEDs indicating machine states, alarms, and process steps. IC Role / Device Role / Timing Role: Reliable on/off driver with robust Schmitt-triggered inputs immune to noisy industrial environments. Use Value: ±3% device-to-device current accuracy ensures consistent LED intensity across multiple boards; -40°C to +85°C rating supports uncontrolled enclosures. |
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 |
|---|---|---|---|
| TLC5940RHBR | 16-channel, but includes dot-correction DACs and grayscale PWM (12-bit), higher pin count (32-QFN), requires external VREF. | Better suited for high-fidelity grayscale video where per-channel intensity correction is needed. | Select TLC5940RHBR only if per-LED grayscale control beyond simple on/off is required. |
| MAX7219CWG+ | 8-channel, integrated scan controller and BCD decoder; SPI interface; max 40 mA/channel; 24-SOIC package. | Targeted at 7-segment/matrix displays with built-in decoding; less flexible for custom LED layouts. | Choose MAX7219CWG+ for cost-sensitive 7-segment or 8×8 matrix applications where serial simplicity outweighs channel count. |
Compared with TLC59282RGET, TLC5940RHBR adds grayscale precision at the cost of complexity and layout space, while MAX7219CWG+ trades channel count and flexibility for integrated display logic-neither offers identical 16-channel daisy-chain simplicity with grouped EMI reduction.
Availability
TLC59282RGET is available at Aetrix Electronics and suitable for video displays, outdoor message boards, and architectural LED lighting requiring stable component supply, long-term production continuity, and RoHS-compliant QFN packaging.
Supply support for TLC59282RGET 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 components for industrial, automotive, and consumer systems.
The TLC59282 product line delivers scalable, noise-optimized LED drivers for signage and illumination applications where uniform current, EMI control, and serial expandability are critical design requirements.
FAQ
What is the maximum LED string voltage supported by the TLC59282RGET?
The TLC59282RGET supports an output voltage range of –0.3 V to +18 V at each OUTn pin, enabling it to drive LED strings with total forward voltage up to 17 V. This accommodates configurations such as five 3.2 V white LEDs in series, provided the VCC rail remains within 3 V–5.5 V and the thermal design sustains dissipation.
How does the four-channel grouped delay reduce EMI in the TLC59282RGET?
The TLC59282RGET staggers output switching across four predefined groups (e.g., OUT0/7/8/15 → OUT1/6/9/14 → OUT2/5/10/13 → OUT3/4/11/12) with ~20 ns inter-group delay. This spreads the total di/dt over time, lowering peak current transients and suppressing conducted and radiated EMI that would occur with simultaneous 16-channel switching.
Can the TLC59282RGET be used with a 3.3 V microcontroller without level shifters?
Yes. The TLC59282RGET features Schmitt-triggered digital inputs (SIN, SCLK, LAT, BLANK) fully compatible with 3.3 V CMOS logic levels - VIH = 0.7 × VCC (min) and VIL = 0.3 × VCC (max) - so direct interfacing with 3.3 V MCUs is supported without external level translation circuitry.
What is the role of the IREF pin on the TLC59282RGET, and how is current set?
The IREF pin outputs a stable 1.205 V (typ) reference voltage. Connecting an external resistor (RIREF) between IREF and GND sets the sink current for all 16 channels using IOUT ≈ 41.9 V / RIREF. For example, a 1.5 kΩ resistor yields ~27.9 mA per channel, adjustable across 2–45 mA depending on VCC and resistor tolerance.
Is the thermal pad on the TLC59282RGET package electrically connected internally?
No. The exposed thermal pad on the TLC59282RGET (RGE package) is not connected to any internal node. It must be externally soldered to a PCB ground plane to achieve the specified θJCbot = 6.3°C/W and ensure reliable thermal performance under sustained 45 mA/channel operation.
TLC59282RGET Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- Yes
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 17V
- Current - Output / Channel:
- 45mA
- Frequency:
- 35MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (4x4)
TLC59282RGET FAQ
1.How can I place an order for TLC59282RGET through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC59282RGET 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 TLC59282RGET reliable?
The price and inventory of TLC59282RGET are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC59282RGET is usually 5 days.
3.What payment methods are accepted for TLC59282RGET?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC59282RGET transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC59282RGET?
TLC59282RGET orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC59282RGET 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 TLC59282RGET?
For technical support, including TLC59282RGET datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC59282RGET requirements.
6.How does Aetrix verify that TLC59282RGET is sourced from the original manufacturer or authorized distributors?
All TLC59282RGET 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 TLC59282RGET meets industry standards.
7.What is the process for return or replacement of TLC59282RGET?
All TLC59282RGET units undergo pre-shipment inspection (PSI). If there is an issue with TLC59282RGET, 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 TLC59282RGET part is unused and in its original packaging.
Return procedure for TLC59282RGET:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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