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Texas Instruments TLC5925IDWRG4
- Part No.:
- TLC5925IDWRG4
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TLC5925IDWRG4.pdf
- Description:
- IC LED DRIVER LINEAR 45MA 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,322
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Product details
Overview
TLC5925IDWRG4 from Texas Instruments is a 16-channel constant-current LED sink driver IC used in LED display and lighting systems. It provides uniform output current from 3 mA to 45 mA per channel, maintains ±4% channel-to-channel accuracy and ±6% device-to-device accuracy, and supports up to 17 V output voltage with 30 MHz serial clock operation - enabling high-refresh-rate LED panels.
For engineers reviewing the TLC5925IDWRG4 datasheet, TLC5925IDWRG4 pinout, TLC5925IDWRG4 application, or TLC5925IDWRG4 equivalent, key selection considerations include its 24-pin SOIC package, external REXT-based current tuning, Schmitt-trigger inputs for noise immunity, thermal shutdown protection, and cascading capability via SDO/SDI for multi-driver LED matrix control.
Technical Context
The TLC5925IDWRG4 integrates a 16-bit serial-in/parallel-out shift register with independent output latches and 16 regulated-current sink channels. Its output stage uses internal current mirrors referenced to an external REXT, delivering stable current across load voltage variations from 0.6 V to 17 V.
Control logic accepts 3.3 V–5.5 V supply, features Schmitt-triggered CLK/LE/OE/SDI inputs, and includes internal pull-up (OE) and pull-down (LE) resistors. Thermal shutdown activates at 150°C–200°C with 15°C hysteresis, and ESD rating meets 1-kV HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output channels | 16 constant-current sink outputs for driving LEDs in common-anode configurations |
| Output current range | 3 mA to 45 mA per channel, set by external REXT (e.g., 840 Ω → ~26 mA, 1680 Ω → ~13 mA) |
| Current accuracy | ±4% max channel-to-channel mismatch; ±6% max device-to-device variation at 25°C |
| Max output voltage | 17 V - supports high-VF LEDs and series strings without external boost |
| Serial interface speed | 30 MHz clock frequency - enables fast refresh of large LED arrays (e.g., 16×16 = 256 LEDs in <1.4 µs) |
| Supply voltage | 3.0 V to 5.5 V - compatible with both 3.3 V microcontrollers and legacy 5 V systems |
| Propagation delay | CLK→OUT: 15–55 ns (VDD = 5.5 V); OE→OUT: 15–55 ns - ensures tight timing control in synchronized displays |
Pinout & Package
Package: SOIC-24 (DW), body size 15.40 mm × 7.50 mm, RoHS-compliant, NIPDAU lead finish, MSL Level-1 (unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return path for logic and all 16 sink currents; requires low-impedance PCB connection |
| SDI (Pin 2) | Serial data input | Accepts 3.3 V/5 V logic-level data; Schmitt-triggered for noise immunity in noisy LED environments |
| CLK (Pin 3) | Serial clock input | Rising-edge triggered; 30 MHz max rate enables rapid data loading into 16-bit shift register |
| LE (Pin 4) | Latch enable | Transfers shift register contents to output latches on falling edge; internal 500 kΩ pulldown |
| OUT0–OUT7 (Pins 5–12) | Constant-current sinks | 16 parallel outputs (Pins 5–12, 13–20); each delivers precise current to cathode of connected LED |
| OUT8–OUT15 (Pins 13–20) | Constant-current sinks | Continuation of 16-channel sink array; supports daisy-chained LED column/row drivers |
| VDD (Pin 24) | Power supply | 3.0 V–5.5 V logic and bias supply; decoupling capacitor required near pin |
| R-EXT (Pin 23) | Current reference input | Connects external resistor to GND to set all 16 output currents simultaneously |
| SDO (Pin 22) | Serial data output | Shifts out MSB of register; enables cascading multiple TLC5925IDWRG4 devices in series |
| OE (Pin 21) | Output enable | Active-low global blanking; internal 500 kΩ pullup ensures safe OFF state at power-up |
Key Features
| Feature | Design Value |
|---|---|
| 16-channel constant-current sink | Each channel independently sinks up to 45 mA with <±4% matching - eliminates need for individual current-limiting resistors |
| External current programming | REXT-based scaling allows precise, board-level adjustment of brightness without firmware changes |
| High-speed serial interface | 30 MHz clock + 100 ns min OE response enables sub-millisecond full-panel updates for flicker-free video |
| Thermal protection | Automatic shutdown at 150°C–200°C with 15°C hysteresis prevents damage during overcurrent or poor heatsinking |
| Daisy-chain capability | SDI/SDO interface supports unlimited cascading - e.g., 10 devices drive 160 LEDs with single MCU SPI port |
Applications
| LED Display Panels | Gaming Machine Displays |
|---|---|
|
Use Scenario: Driving 16×16 red/green/blue LED matrix in indoor signage with 120 Hz refresh. IC Role / Device Role / Timing Role: Sink driver for common-anode LED rows; receives serialized pixel data via SPI and latches per frame. Use Value: ±4% current matching ensures uniform luminance across 256 LEDs; 30 MHz clock supports full-frame load in <1.4 µs. |
Use Scenario: Controlling animated LED reels and status indicators in casino slot machines. IC Role / Device Role / Timing Role: Constant-current sink for high-brightness indicator LEDs; blanked globally via OE for strobe effects. Use Value: 17 V output headroom drives 3–4 white LEDs in series; thermal shutdown protects against enclosure overheating. |
| Architectural LED Lighting | White Goods UI Panels |
|
Use Scenario: Dimmable linear LED strips in retail accent lighting with PWM dimming via OE. IC Role / Device Role / Timing Role: Current-regulated sink for segmented strip zones; REXT sets base current, OE modulates duty cycle. Use Value: Output current invariant to VF drift ensures consistent color temperature over lifetime; 3.3 V–5.5 V supply simplifies power design. |
Use Scenario: Backlight and status LED array on refrigerator control panel with EMI-sensitive environment. IC Role / Device Role / Timing Role: Low-noise LED driver with Schmitt-trigger inputs rejecting switch bounce and motor noise. Use Value: 1-kV HBM ESD rating withstands handling in assembly; SOIC-24 package fits compact front-panel PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED sink driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC5940RTQR | 16-channel, but adds dot-correction (6-bit) and grayscale PWM (12-bit); requires external VREF; higher pin count (32-QFN) | Used where per-LED grayscale precision is required (e.g., video walls), not just uniform current | Select TLC5940RTQR only if dot-correction calibration and 4096-step PWM are needed; TLC5925IDWRG4 is simpler and lower-cost for basic constant-current needs |
| STP16CP05MTR | 16-channel sink driver with similar REXT current setting, but max output voltage = 20 V and no thermal shutdown | Suitable for industrial LED arrays where ambient temperature is controlled and higher VOUT margin is critical | Choose STP16CP05MTR when >17 V headroom is mandatory and thermal monitoring is handled externally; TLC5925IDWRG4 integrates protection |
Compared with TLC5940RTQR and STP16CP05MTR, the TLC5925IDWRG4 offers the optimal balance of integrated thermal safety, proven 17 V robustness, and minimal external components - making it preferred for cost-sensitive, reliability-critical LED display modules.
Availability
TLC5925IDWRG4 is available at Aetrix Electronics and suitable for LED display panels, gaming machine interfaces, and architectural lighting systems requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for TLC5925IDWRG4 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and interface solutions.
The TLC5925IDWRG4 belongs to TI's LED driver product line, designed specifically for high-reliability, constant-current LED display and general lighting applications where accuracy, thermal resilience, and serial scalability are essential.
FAQ
What is the maximum output voltage supported by the TLC5925IDWRG4?
The TLC5925IDWRG4 supports a maximum output voltage of 17 V across its OUT0–OUT15 pins. This allows direct driving of LED strings with up to three or four standard white LEDs (VF ≈ 3.0–3.6 V each) in series without requiring external boost circuitry. The specification is validated under recommended operating conditions with VO ≥ 0.6 V and IO ≤ 45 mA.
How is output current set on the TLC5925IDWRG4?
Output current on the TLC5925IDWRG4 is set by an external resistor (REXT) connected between Pin 23 (R-EXT) and GND. The relationship is IOUT = (1.21 V / REXT) × 18, yielding 13 mA at 1680 Ω and 26 mA at 840 Ω. This single-resistor method ensures matched current across all 16 channels and simplifies brightness calibration at board level.
Does the TLC5925IDWRG4 support daisy-chaining with other devices?
Yes, the TLC5925IDWRG4 supports daisy-chaining via its SDO (Pin 22) and SDI (Pin 2) pins. Serial data shifted into the first device exits SDO and feeds SDI of the next, allowing unlimited expansion of LED channels using a single MCU SPI interface. The 30 MHz clock and <55 ns propagation delays ensure timing integrity across cascaded configurations.
What protection features does the TLC5925IDWRG4 include?
The TLC5925IDWRG4 integrates thermal shutdown that activates at 150°C–200°C with 15°C hysteresis, plus 1-kV HBM ESD protection on all pins. It also features Schmitt-trigger inputs for noise immunity and internal pull-up (OE) and pull-down (LE) resistors to ensure defined states during power-up or floating control lines - collectively enhancing system robustness in real-world LED applications.
What package type is used for the TLC5925IDWRG4?
The TLC5925IDWRG4 uses a 24-pin SOIC (DW) package measuring 15.40 mm × 7.50 mm, with NIPDAU lead finish and MSL Level-1 rating (unlimited floor life, no bake required). This industry-standard package supports automated assembly, offers good thermal performance (RθJA = 45.5°C/W on 4-layer board), and is pin-compatible with other TLC5925 variants in SOIC format.
TLC5925IDWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 30MHz
- Dimming:
- -
- Applications:
- Signage
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
TLC5925IDWRG4 FAQ
1.How can I place an order for TLC5925IDWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC5925IDWRG4 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 TLC5925IDWRG4 reliable?
The price and inventory of TLC5925IDWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC5925IDWRG4 is usually 5 days.
3.What payment methods are accepted for TLC5925IDWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC5925IDWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC5925IDWRG4?
TLC5925IDWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC5925IDWRG4 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 TLC5925IDWRG4?
For technical support, including TLC5925IDWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC5925IDWRG4 requirements.
6.How does Aetrix verify that TLC5925IDWRG4 is sourced from the original manufacturer or authorized distributors?
All TLC5925IDWRG4 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 TLC5925IDWRG4 meets industry standards.
7.What is the process for return or replacement of TLC5925IDWRG4?
All TLC5925IDWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC5925IDWRG4, 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 TLC5925IDWRG4 part is unused and in its original packaging.
Return procedure for TLC5925IDWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC5925IDWRG4 Tags
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BCR402RE6327HTSA1
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
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BCR421UFD-7
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