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Texas Instruments TLC5920DLG4
- Part No.:
- TLC5920DLG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
TLC5920DLG4.pdf
- Description:
- IC LED DRIVER LINEAR 30MA 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,657
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Product details
Overview
TLC5920DLG4 from Texas Instruments is a 16-channel × 8-bit constant-current LED driver/controller IC with integrated shift register, data latch, and 8-bit common driver. It delivers up to 30 mA per segment output (16 channels), 640 mA per common output (8 channels), and supports 10 MHz serial clock input. Designed for cathode-common LED matrix displays, it enables full control of 16×8 monochrome or cascaded 16×16 two-color arrays using external IREF resistor-based current setting.
For engineers reviewing the TLC5920DLG4 datasheet, TLC5920DLG4 pinout, TLC5920DLG4 application, or TLC5920DLG4 equivalent, key selection considerations include its 48-pin SSOP package, ±6% channel-to-channel current accuracy, BLANK/DSEL blanking control, synchronous serial interface (SIN/SCLK/SOUT), and compatibility with 4.5 V–5.5 V logic/LED/analog supplies.
Technical Context
The TLC5920DLG4 integrates a 16-bit serial-in/parallel-out shift register with latch, 16-channel constant-current segment drivers, and an 8-bit 3-to-8 decoder-based common driver. Its current value is set globally via a single external resistor connected to IREF, enabling precise 3 mA–30 mA per segment output with ±6% max error between bits.
It operates in static or multiplexed modes (e.g., 1/8 or 1/16 duty cycle) and supports cascading via SOUT→SIN daisy-chaining. Control signals include CSEL0–CSEL2 for common selection, LATCH for data latching, BLANK for global LED off, and DSEL for display enable/disable with inverted output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Segment Output Current | 3 mA to 30 mA per channel, set by external IREF resistor; enables uniform brightness across 16 LEDs |
| Common Output Current | Up to 640 mA per COM0–COM7 pin; supports high-current cathode switching for multiplexed matrices |
| Current Accuracy | ±6% max channel-to-channel error; ensures consistent LED intensity without per-channel trimming |
| Serial Clock Frequency | 10 MHz max; allows fast refresh rates for flicker-free 16×8 or cascaded 16×16 displays |
| Supply Voltages | VLOG = VLED = VANA = 4.5 V–5.5 V; simplifies single-rail system design with shared 5 V supply |
| Operating Temperature | –20°C to +85°C; qualified for industrial ambient environments without derating |
| Package | 48-pin SSOP (DL); 0.300-inch body width, JEDEC MO-118 compliant, surface-mount compatible |
Pinout & Package
48-pin SSOP (DL) package with 0.025-inch lead pitch; gull-wing leads, JEDEC MO-118 compliant; body dimensions 7.59 mm × 10.67 mm × 2.79 mm (L×W×H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| S0–S15 | Segment driver outputs | 16 constant-current sinks driving LED anodes; each rated 30 mA max |
| COM0–COM7 | Common driver outputs | 8 high-current (640 mA) cathode switches for multiplexed matrix rows/columns |
| IREF | Current reference input | Connect external resistor to GNDANA to set all 16 segment currents simultaneously |
| SIN / SOUT | Serial data in/out | Daisy-chain multiple TLC5920DLG4 devices; SIN accepts 10 MHz clock-synchronized data |
| SCLK / LATCH / BLANK / DSEL | Control inputs | SCLK clocks data; LATCH transfers shift register to latch; BLANK forces all COM off; DSEL enables/disables display |
| CSEL0–CSEL2 | Common select inputs | 3-bit binary code selects one of eight COM outputs (COM0–COM7) |
| VLOG / VANA / VLED / GNDLOG / GNDANA / GNDLED | Power & ground terminals | Separate analog/digital/LED power domains minimize noise coupling and support clean current regulation |
Key Features
| Feature | Design Value |
|---|---|
| Global current programming | Single external resistor sets identical 3–30 mA output across all 16 segments-eliminates per-channel calibration |
| Integrated 3-to-8 decoder | CSEL0–CSEL2 directly select COM0–COM7 without external logic-reduces BOM count and PCB area |
| Two-stage blanking control | Independent BLANK (hardware reset) and DSEL (software-controlled enable) allow flexible display on/off sequencing |
| High-speed serial interface | 10 MHz SCLK supports >1 kHz frame rate for 128-pixel (16×8) displays-enables smooth animation |
| Multiplex-ready architecture | Supports 1/8, 1/16, or static drive modes; internal timing aligns segment and common outputs to prevent ghosting |
Applications
| Dot-Matrix Display Driver | Industrial Panel Indicator |
|---|---|
Use Scenario: Driving 16×8 monochrome LED dot-matrix modules in signage or status panels. IC Role / Device Role / Timing Role: TLC5920DLG4 acts as the sole segment/common controller, managing row/column scanning and current regulation. Use Value: Eliminates need for discrete transistors and current-limiting resistors-reducing component count by >20 parts per display. | Use Scenario: Providing multi-state visual feedback (e.g., RUN/ALARM/FAULT) on factory HMIs and PLC interfaces. IC Role / Device Role / Timing Role: TLC5920DLG4 serves as a robust, temperature-stable LED driver with built-in blanking for fail-safe indication. Use Value: ±6% current matching ensures consistent LED brightness across operating temperature (–20°C to +85°C), critical for operator readability. |
| Two-Color LED Array | 7-Segment Display Controller |
Use Scenario: Controlling dual-color (e.g., red/green) 16×16 LED arrays using two cascaded TLC5920DLG4 devices. IC Role / Device Role / Timing Role: First TLC5920DLG4 drives red segments; second drives green segments-synchronized via shared SCLK/LATCH/BLANK. Use Value: SOUT→SIN daisy-chaining enables coordinated 256-pixel updates with single MCU SPI transaction-minimizing firmware overhead. | Use Scenario: Driving multiplexed 7-segment displays (e.g., 8-digit, 16-segment) in test equipment and instrumentation. IC Role / Device Role / Timing Role: TLC5920DLG4 functions as a 16-bit segment driver with 8 common outputs-mapping digits to COM0–COM7 and segments to S0–S15. Use Value: 1/8 duty-cycle operation at 640 mA COM current ensures high segment brightness while maintaining thermal safety in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7219CWG+ | 8-bit serial-input LED driver with built-in BCD decode, scan limit, and intensity control; 40-pin WSOIC package | Targets numeric 7-segment displays; lacks 16-bit segment flexibility and 640 mA common drive | Choose MAX7219CWG+ when driving 7-segment digits with minimal MCU intervention; avoid for custom dot-matrix or high-current common loads |
| IS31FL3728-QFLS4-TR | 28-channel constant-current LED driver with I²C interface, PWM dimming, and auto-breathing; 48-pin QFN | Offers per-channel PWM control and smaller footprint but no native common-driver architecture or 640 mA sink capability | Choose IS31FL3728-QFLS4-TR for RGB/multi-color applications requiring independent dimming; not suitable for high-current multiplexed cathode-common matrices |
Compared with MAX7219CWG+ and IS31FL3728-QFLS4-TR, the TLC5920DLG4 uniquely combines 16-bit segment drive, 8-bit high-current common switching, and resistor-programmable current in a single 48-pin SSOP-making it optimal for cost-sensitive, high-brightness dot-matrix systems where MCU resources are constrained.
Availability
TLC5920DLG4 is available at Aetrix Electronics and suitable for industrial HMIs, LED signage, test instrumentation, and embedded panel displays requiring stable component supply and long-term manufacturability.
Supply support for TLC5920DLG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TLC5920DLG4 belongs to TI's legacy LED driver portfolio, designed specifically for high-reliability, low-pin-count control of multiplexed cathode-common LED matrices in cost-sensitive industrial applications.
FAQ
What is the maximum segment current supported by the TLC5920DLG4?
The TLC5920DLG4 supports a maximum segment output current of 30 mA per channel (S0–S15). This value is set globally using an external resistor connected between IREF and GNDANA, and remains stable across the full operating temperature range of –20°C to +85°C. The device maintains ±6% channel-to-channel current accuracy at this level, ensuring uniform LED brightness without per-channel compensation.
How does the TLC5920DLG4 handle multiplexed LED matrix timing?
The TLC5920DLG4 uses synchronized internal timing between its 16-bit segment drivers and 8-bit common decoder to prevent ghosting during multiplexed operation. When CSEL0–CSEL2 select a specific COMn output, the corresponding segment data (latched via LATCH) is applied simultaneously to S0–S15. Propagation delays (e.g., td CSELn–COMn ≤ 120 ns) ensure tight alignment, supporting reliable 1/8 or 1/16 duty-cycle drive for 16×8 or cascaded 16×16 arrays.
Can the TLC5920DLG4 be used with a 3.3 V microcontroller?
No-the TLC5920DLG4 requires VLOG, VANA, and VLED supplies between 4.5 V and 5.5 V. Its input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and logic-level compatibility are specified only for 5 V operation. Direct interfacing with a 3.3 V MCU would violate absolute maximum ratings and cause unreliable data transfer; level-shifting circuitry is required for safe integration.
What is the function of the DSEL pin on the TLC5920DLG4?
The DSEL (Display Select) pin on the TLC5920DLG4 provides software-controllable display enable/disable functionality. When DSEL is high, all segment outputs are disabled-turning off connected LEDs regardless of data state. Its complementary output (DSEL pin 30) mirrors the inverted DSEL signal, enabling direct connection to downstream logic. DSEL operates independently of BLANK but is overridden by it: if BLANK is high, LEDs remain off even if DSEL is low.
Does the TLC5920DLG4 support daisy-chaining for larger displays?
Yes-the TLC5920DLG4 supports seamless daisy-chaining via its SIN (serial input) and SOUT (serial output) pins. Data shifted into SIN propagates through the internal 16-bit shift register and exits SOUT after 16 clocks, allowing multiple TLC5920DLG4 devices to be cascaded. For example, two TLC5920DLG4 ICs can drive a 16×16 two-color LED array using shared SCLK, LATCH, BLANK, and CSEL lines-reducing MCU GPIO requirements and simplifying layout.
TLC5920DLG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Type:
- Linear
- Topology:
- Shift Register
- Internal Switch(s):
- -
- Number of Outputs:
- 16
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 30mA
- Frequency:
- 10MHz
- Dimming:
- -
- Applications:
- -
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
TLC5920DLG4 FAQ
1.How can I place an order for TLC5920DLG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5920DLG4 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 TLC5920DLG4 reliable?
The price and inventory of TLC5920DLG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5920DLG4 is usually 5 days.
3.What payment methods are accepted for TLC5920DLG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5920DLG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5920DLG4?
TLC5920DLG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5920DLG4 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 TLC5920DLG4?
For technical support, including TLC5920DLG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5920DLG4 requirements.
6.How does Aetrix verify that TLC5920DLG4 is sourced from the original manufacturer or authorized distributors?
All TLC5920DLG4 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 TLC5920DLG4 meets industry standards.
7.What is the process for return or replacement of TLC5920DLG4?
All TLC5920DLG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC5920DLG4, 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 TLC5920DLG4 part is unused and in its original packaging.
Return procedure for TLC5920DLG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5920DLG4 Tags
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