Specifications
| Type | Description |
|---|---|
| Part Number | TLC5940 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Component Type | Other |
| Package / Case | PDIP-28 35.69 mm x 6.73 mm; HTSSOP-28 9.70 mm x 4.40 mm; VQFN-32 5.00 mm x 5.00 mm |
| Number of Channels | 16 channels |
| Grayscale PWM Resolution | 12 bit, 4096 steps |
| Dot Correction Resolution | 6 bit, 64 steps |
| Dot Correction Storage | integrated EEPROM |
| LED Supply Voltage | up to 17 V |
| Supply Voltage | 3 V min, 5.5 V max |
| Constant Output Current Range | 0 mA to 60 mA |
| Constant Output Current Range | 0 mA to 120 mA |
| Data Transfer Rate | 30 MHz |
| Data Shift Clock Frequency | 30 MHz max |
| Grayscale Clock Frequency | 30 MHz max |
| Absolute Maximum Supply Voltage | -0.3 V min, 6 V max |
| Absolute Maximum Output Voltage | -0.3 V min, 18 V max |
| Absolute Maximum Output Current | 130 mA max |
| EEPROM Program Voltage Absolute Maximum | -0.3 V min, 24 V max |
| EEPROM Write Cycles | 50 max |
| Storage Temperature | -55°C min, 150°C max |
| ESD Rating HBM | ±2000 V |
| ESD Rating CDM | ±500 V |
| Recommended Output Voltage | 17 V max |
| High-Level Input Voltage | 0.8 x VCC min, VCC max |
| Low-Level Input Voltage | GND min, 0.2 x VCC max |
| High-Level Output Current | -1 mA |
| Low-Level Output Current | 1 mA |
| EEPROM Program Voltage | 20 V min, 22 V typ, 23 V max |
| Operating Free-Air Temperature | -40°C min, 85°C max |
| SCLK Pulse Duration | 16 ns min |
| GSCLK Pulse Duration | 16 ns min |
| XLAT Pulse Duration | 20 ns min |
| BLANK Pulse Duration | 20 ns min |
| SIN to SCLK Setup Time | 5 ns min |
| SCLK to XLAT Setup Time | 10 ns min |
| XLAT to GSCLK Setup Time | 30 ns min |
| EEPROM Programming Time | 20 ms min |
| Junction-to-Ambient Thermal Resistance | 36.7°C/W |
| Junction-to-Ambient Thermal Resistance | 34.3°C/W |
| High-Level Output Voltage | VCC - 0.5 V min |
| Low-Level Output Voltage | 0.5 V max |
| Constant Sink Current | 54 mA min, 61 mA typ, 69 mA max |
| Leakage Output Current | 0.1 µA typ |
| Thermal Error Flag Threshold | 150°C min, 170°C max |
| LED Open Detection Threshold | 0.3 V min, 0.4 V typ |
| Datasheet Status | request_only |
Product Overview
The TLC5940 is a Texas Instruments 16-channel LED driver with constant-current sink outputs OUT0 through OUT15. Each channel supports 12-bit grayscale PWM brightness control with 4096 steps and 6-bit dot correction with 64 steps for per-channel current adjustment. Dot-correction data is storable in integrated EEPROM, with a recommended VPRG programming voltage of 20 V to 23 V and 20 ms minimum EEPROM programming time.
The device operates from a recommended VCC range of 3 V to 5.5 V and supports LED supply voltage up to 17 V. Output current capability is specified as 0 mA to 60 mA when VCC is below 3.6 V and 0 mA to 120 mA when VCC is above 3.6 V. The serial interface, SCLK, and GSCLK are specified up to 30 MHz.
Package options include PDIP-28, HTSSOP-28, and VQFN-32. Thermal resistance is specified for HTSSOP-28 at 36.7°C/W and VQFN-32 at 34.3°C/W. The operating free-air temperature range is -40°C to 85°C.
Key Features
- 16 constant-current sink outputs OUT0 to OUT15
- 12-bit grayscale PWM control with 4096 steps
- 6-bit dot correction with 64 steps per channel
- Dot correction data storable in integrated EEPROM
- LED supply voltage specified up to 17 V
- Recommended VCC operating range from 3 V to 5.5 V
- Serial data interface supports 30 MHz transfer rate
- SCLK and GSCLK frequencies specified to 30 MHz
- Operating free-air temperature range is -40°C to 85°C
- Thermal error flag threshold from 150°C to 170°C
Typical Applications
- Multi-channel LED brightness control
- LED grayscale PWM dimming
- Per-channel LED current correction
- Constant-current LED sink driving
- Systems using 30 MHz serial data
- Designs requiring LED open detection
Procurement Notes
When requesting a quote for TLC5940, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For LED and optoelectronic sourcing, brightness bin, wavelength or color temperature bin, forward voltage range, viewing angle, moisture sensitivity level and soldering process limits may affect final selection, availability and lead time.
FAQ
How many LED channels does the TLC5940 provide?
The TLC5940 provides 16 constant-current sink LED driver outputs, identified as OUT0 through OUT15. Each channel supports individual grayscale PWM brightness control and dot correction based on the extracted datasheet facts.
What PWM and dot correction resolution does TLC5940 support?
The device supports 12-bit grayscale PWM resolution with 4096 steps per channel. It also provides 6-bit dot correction with 64 steps for individual constant-current sink adjustment per channel.
What supply voltage range is recommended for TLC5940?
The recommended VCC operating range is 3 V minimum to 5.5 V maximum. The LED power supply voltage is specified up to 17 V, and the recommended voltage applied to OUT0 through OUT15 is 17 V maximum.
What package options are listed for the TLC5940?
The extracted package information lists PDIP-28 at 35.69 mm x 6.73 mm, HTSSOP-28 at 9.70 mm x 4.40 mm, and VQFN-32 at 5.00 mm x 5.00 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.