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Texas Instruments TLC5920DL
- Part No.:
- TLC5920DL
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
TLC5920DL.pdf
- Description:
- IC LED DRIVER LINEAR 30MA 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:867
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Product details
Overview
TLC5920DL from Texas Instruments is a 16-channel × 8-bit constant-current LED driver/controller IC with integrated shift register, data latch, and common-driver logic. It delivers up to 30 mA per segment output and 640 mA per common output, supports 10 MHz serial clocking, operates from 4.5 V to 5.5 V logic/LED supplies, and targets cathode-common dot-matrix LED displays in industrial signage and instrumentation.
For engineers reviewing the TLC5920DL datasheet, TLC5920DL pinout, TLC5920DL application, or TLC5920DL equivalent, key selection criteria include its 48-pin SSOP package, IREF-based current setting (3–30 mA), BLANK/CSEL/DSEL control architecture, and compatibility with static or multiplexed 16×8 mono or 16×16 two-color LED arrays.
Technical Context
The TLC5920DL implements a synchronous serial interface with SIN/SCLK/LATCH for 16-bit segment data loading, and uses CSEL0–CSEL2 decoded logic to select one of eight common outputs (COM0–COM7). Its constant-current segment drivers are calibrated via external IREF resistor, achieving ±6% max current error between bits.
It integrates dual power domains: VLOG/GNDLOG for logic and VLED/GNDLED/VANA/GNDANA for analog/LED drive, with separate ground pins to minimize noise coupling. The device supports cascading via SOUT-to-SIN daisy-chaining and features BLANK-driven global LED off control independent of DSEL state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 16 segment drivers + 8 common drivers for full 16×8 dot-matrix control |
| Segment Current Range | 3 mA to 30 mA per channel, set by single external IREF resistor |
| Common Driver Current | 640 mA max per COM pin, supporting high-brightness multiplexed LEDs |
| Serial Clock Frequency | Up to 10 MHz - enables fast display refresh and low-latency updates |
| Supply Voltages | VLOG = VLED = VANA = 4.5 V to 5.5 V - single-rail 5 V system compatibility |
| Operating Temperature | –20°C to +85°C - suitable for industrial panel and outdoor signage environments |
| Package | 48-pin SSOP (DL) - surface-mount footprint with 0.630" body width and JEDEC MO-118 compliance |
Pinout & Package
48-pin SSOP (DL) package with exposed thermal pad not present; pin pitch 0.025", body width 0.300", compliant with JEDEC MO-118 standard. Pin 1 located at top-left corner (Q1 quadrant in tape).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BLANK (39) | Global LED disable input | High-level assertion forces all common outputs OFF - used for flicker-free blanking or PWM dimming synchronization |
| COM0–COM7 (1–4, 44–47) | Common anode driver outputs | Eight high-current (640 mA) open-drain outputs for column/row selection in multiplexed LED matrices |
| CSEL0–CSEL2 (35–38) | Common select address inputs | 3-bit binary code selects one active COM line - enables time-division multiplexing without external decoder |
| DSEL (30, 33) | Display enable control | Input (33) enables/disables segment data latching; output (30) provides inverted DSEL signal for cascade timing |
| IREF (17) | Current reference input | Connects external resistor to GNDANA to set uniform segment current across all 16 channels |
| LATCH (41) | Data latch strobe | Transfers 16-bit shift register contents to output latches on rising edge - critical for glitch-free display updates |
| SIN (42) / SOUT (32) | Serial data I/O | Synchronous serial interface supports daisy-chained configuration of multiple TLC5920DL devices |
| S0–S15 (9–16, 22–29) | Segment current outputs | 16 constant-current sinks (3–30 mA) driving LED cathodes - each tied to one matrix row/column intersection |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor current calibration | One external IREF resistor sets identical 3–30 mA current for all 16 segment outputs - simplifies BOM and eliminates per-channel trimming |
| Hardware-multiplexed common control | CSEL0–CSEL2 inputs decode to 8 COM lines - removes need for external 3-to-8 decoder and reduces PCB routing complexity |
| Integrated shift + latch architecture | Separate SIN/SCLK for data loading and LATCH for atomic output update - prevents partial-frame artifacts during dynamic content |
| Independent logic/LED power domains | VLOG/GNDLOG and VLED/GNDLED/VANA/GNDANA isolation - suppresses digital switching noise from affecting analog current accuracy |
| Cascade-ready serial interface | SOUT pin directly drives SIN of next device - enables scalable LED array expansion without additional controllers or level shifters |
Applications
| Industrial Panel Displays | Electronic Signage |
|---|---|
Use Scenario: Driving 16×8 alphanumeric LED modules in factory HMIs and control panels requiring high reliability and wide temperature operation. IC Role / Device Role / Timing Role: TLC5920DL acts as the primary segment/common driver, managing static or 1/8-duty-cycle multiplexing with precise current matching across all digits. Use Value: ±6% current accuracy ensures uniform brightness across 128 LED segments without per-LED binning or calibration firmware. | Use Scenario: Controlling red/green dual-color 16×16 dot-matrix signs in retail and transportation applications using two cascaded TLC5920DL devices. IC Role / Device Role / Timing Role: Each TLC5920DL handles one color layer; SOUT→SIN daisy-chain synchronizes frame updates across both layers with minimal timing skew. Use Value: 10 MHz serial clock supports >120 Hz refresh rates even at 1/16 duty cycle - eliminates visible flicker under ambient lighting. |
| Test Equipment Indicators | Instrumentation Front Panels |
Use Scenario: Illuminating status LEDs and bar-graph indicators on benchtop multimeters and oscilloscopes where consistent luminance and low EMI are critical. IC Role / Device Role / Timing Role: TLC5920DL replaces discrete transistor arrays and current-limiting resistors, providing regulated current sink per indicator LED. Use Value: Integrated constant-current design eliminates thermal drift in LED brightness over operating temperature range (–20°C to +85°C). | Use Scenario: Driving segmented 7-segment and custom symbol displays on medical and laboratory instruments requiring long-term stability and RoHS compliance. IC Role / Device Role / Timing Role: TLC5920DL serves as the display controller, accepting serial commands from MCU and translating them into segment activation patterns. Use Value: BLANK pin enables synchronized global dimming via external PWM - supports adjustable brightness without altering MCU display timing logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5940PWPR | 16-channel PWM LED driver with dot-correction and grayscale control; requires external Vref and has different serial protocol (GSCLK + DCPRG) | Supports 12-bit grayscale per channel vs TLC5920DL's on/off + current tuning; better for smooth dimming but higher system complexity | Select when precise grayscale intensity control is required over simple constant-current switching |
| MAX7219CWG+ | 8-digit/64-LED driver with internal scan oscillator and SPI interface; fixed 400 µA–40 mA current range per segment | Integrated scan timing eliminates external CSEL/BLANK logic; limited to 8-digit numeric displays, not general-purpose dot-matrix | Select for compact numeric displays where MCU resource savings outweigh flexibility loss |
Compared with TLC5920DL, TLC5940PWPR adds per-channel PWM grayscale but increases layout and firmware overhead, while MAX7219CWG+ simplifies design for numeric displays but lacks the 16×8 configurability and current-setting granularity of the TLC5920DL.
Availability
TLC5920DL is available at Aetrix Electronics and suitable for industrial panel displays, electronic signage, test equipment indicators, and instrumentation front panels requiring stable component supply and long-lifecycle support.
Supply support for TLC5920DL 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 90 years of innovation history.
The TLC5920DL belongs to TI's legacy LED driver product line designed specifically for cost-sensitive, high-reliability dot-matrix display systems requiring precise constant-current sourcing and hardware-multiplexed control.
FAQ
What is the maximum segment current supported by the TLC5920DL?
The TLC5920DL supports a maximum segment current of 30 mA per channel, adjustable downward via the external IREF resistor. This value is guaranteed across all 16 segment outputs simultaneously, with ±6% maximum current error between bits at VLED = 5 V and R(IREF) = 420 Ω, making it suitable for driving high-brightness LEDs in industrial signage and instrumentation displays using the TLC5920DL.
How does the TLC5920DL handle multiplexed LED arrays?
The TLC5920DL uses CSEL0–CSEL2 inputs to decode and activate one of eight common outputs (COM0–COM7), enabling hardware-based time-division multiplexing without external logic. Combined with BLANK pin control and 10 MHz serial clock support, this allows seamless implementation of 1/8-duty-cycle 16×8 or cascaded 16×16 two-color displays using the TLC5920DL.
Can the TLC5920DL be used in cascaded configurations?
Yes - the TLC5920DL supports daisy-chaining via its SOUT pin, which outputs the inverted and delayed version of the serial input stream. This allows multiple TLC5920DL devices to share a single SCLK and LATCH signal while maintaining synchronized data loading, enabling scalable LED array designs such as dual-color 16×16 matrices using two TLC5920DL ICs.
What are the power supply requirements for the TLC5920DL?
The TLC5920DL requires three isolated supply domains: VLOG (4.5–5.5 V) for logic circuitry, VLED (4.5–5.5 V) for segment driver outputs, and VANA (4.5–5.5 V, same as VLED) for analog current reference. Separate GNDLOG, GNDLED, and GNDANA grounds must be used to maintain current accuracy and noise immunity in the TLC5920DL.
Is the TLC5920DL RoHS compliant and what is its moisture sensitivity level?
Yes, the TLC5920DL is RoHS compliant and rated MSL Level-2-260°C-1 YEAR per JEDEC J-STD-020, meaning it can be stored for up to 1 year at ≤30°C/60% RH before reflow. Its SSOP (DL) package uses NiPdAu lead finish and is qualified for standard Pb-free reflow profiles - critical for manufacturing compliance in the TLC5920DL.
TLC5920DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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
TLC5920DL FAQ
1.How can I place an order for TLC5920DL through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5920DL 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 TLC5920DL reliable?
The price and inventory of TLC5920DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5920DL is usually 5 days.
3.What payment methods are accepted for TLC5920DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5920DL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5920DL?
TLC5920DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5920DL 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 TLC5920DL?
For technical support, including TLC5920DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5920DL requirements.
6.How does Aetrix verify that TLC5920DL is sourced from the original manufacturer or authorized distributors?
All TLC5920DL 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 TLC5920DL meets industry standards.
7.What is the process for return or replacement of TLC5920DL?
All TLC5920DL units undergo pre-shipment inspection (PSI). If there is an issue with TLC5920DL, 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 TLC5920DL part is unused and in its original packaging.
Return procedure for TLC5920DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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