Specifications
| Type | Description |
|---|---|
| Part Number | TLC59731 |
| Manufacturer | Texas Instruments |
| Product Type | LED Driver IC |
| Category | Power Management |
| Component Type | Power_IC |
| Package Case | SOIC (8), body size 4.90 mm x 3.91 mm |
| LED Driver Channels | 3 sink current channels; OUT0 to OUT2 |
| Current Capability Per Channel | 50 mA per output channel |
| Grayscale PWM Resolution | 8-bit, 256 steps with simple gamma correction |
| Serial Interface | Single-wire EasySet SDI/SDO data interface |
| Maximum Data Transfer Rate | 600 kbps, EasySet serial interface |
| Internal Grayscale Clock Oscillator | 6 MHz typical |
| Display Repeat Rate | 3.1 kHz typical with integrated 6-MHz grayscale clock oscillator |
| Supply Voltage Range | 3 V to 5.5 V, no internal shunt regulator mode |
| Supply Voltage Range | 3 V to 6 V, internal shunt regulator mode |
| Maximum OUT Terminal Voltage | Up to 21 V, OUT0 to OUT2 |
| Operating Temperature Range | -40°C to 85°C operating free-air temperature |
| Package | SOIC (8), TLC59731 D package |
| Body Size | 4.90 mm x 3.91 mm nominal, SOIC (8) package |
| VCC Absolute Maximum Rating | -0.3 V to 7.0 V, over operating free-air temperature range |
| SDI Input Voltage Absolute Maximum Rating | -0.3 V to VCC + 1.2 V, all voltages with respect to GND |
| OUT0 to OUT2 Voltage Absolute Maximum Rating | -0.3 V to 21 V output voltage |
| SDO Voltage Absolute Maximum Rating | -0.3 V to 7.0 V output voltage |
| Output DC Current Absolute Maximum Rating | 0 mA to 60 mA, OUT0 to OUT2 |
| Operating Junction Temperature Absolute Maximum Rating | -40°C to 150°C, TJ |
| Storage Temperature Range | -55°C to 150°C, Tstg |
| ESD Rating HBM | ±8000 V, human body model, ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±2000 V, charged-device model, JEDEC JESD22-C101 |
| Recommended VCC | 3.0 V min, 5 V nominal, 5.5 V max; no internal shunt regulator mode |
| Recommended VCC Maximum | 6 V max, internal shunt regulator mode |
| Recommended Output Voltage | 21 V max, OUT0 to OUT2 |
| High-Level Input Voltage | 0.7 x VCC min to VCC max, SDI |
| Low-Level Input Voltage | GND min to 0.3 x VCC max, SDI |
| Input Voltage Hysteresis | 0.2 x VCC, SDI |
| High-Level Output Current | -2 mA, SDO |
| Low-Level Output Current | 2 mA, SDO |
| Recommended LED Output Current | 50 mA max, OUT0 to OUT2 |
| Shunt Regulator Sink Current | 20 mA max, VCC |
| Operating Free-Air Temperature Range | -40°C to +85°C, TA |
| Operating Junction Temperature Range | -40°C to +125°C, TJ |
| Data Transfer Rate | 20 kHz min, 600 kHz max, SDI fCLK(SDI) |
| SDI Input Pulse Duration | 275 ns min, 0.5/fCLK max, SDI tSDI |
| Pulse Duration High | 14 ns min, SDI tWH |
| Pulse Duration Low | 14 ns min, SDI tWL |
| End-of-Sequence Hold Time | 3.5/fCLK min, 5.5/fCLK max, SDI rising edge to SDI rising edge, tH0 |
| Data Latch Hold Time | 8/fCLK min, SDI rising edge to SDI rising edge, GSLAT, tH1 |
| Junction-to-Ambient Thermal Resistance | 134.6°C/W, D package, SOIC 8 pins |
| Junction-to-Case Top Thermal Resistance | 88.6°C/W, D package, SOIC 8 pins |
| Junction-to-Board Thermal Resistance | 75.3°C/W, D package, SOIC 8 pins |
| Junction-to-Top Characterization Parameter | 37.7°C/W, D package, SOIC 8 pins |
| Junction-to-Board Characterization Parameter | 74.8°C/W, D package, SOIC 8 pins |
| High-Level Output Voltage | VCC - 0.4 V min, VCC max; SDO, IOH = -2 mA, TA = -40°C to +85°C, VCC = 3 V to 6 V |
| Low-Level Output Voltage | 0 V min, 0.4 V max; SDO, IOL = 2 mA, TA = -40°C to +85°C, VCC = 3 V to 6 V |
| Shunt Regulator Output Voltage | 5.9 V typical, ICC = 1 mA, SDI = low |
| Supply Current ICC0 | 2.3 mA typical, 3.5 mA max; VCC = 3 V to 5.5 V, SDI = low, all grayscale GSn = FFh, VOUTn = 0.6 V, SDO = 15 pF |
| Supply Current ICC1 | 2.6 mA typical, 4.5 mA max; VCC = 3 V to 5.5 V, SDI = 600 kHz, GSn = FFh, VOUTn = 0.6 V, SDO = 15 pF |
| LED Output Current | 32 mA min, 40 mA typical; all OUTn = on, VOUTn = 0.6 V |
| Output Leakage Current | 0.1 µA max; OUT0 to OUT2, GSn = 00h, VOUTn = 21 V, TJ = -40°C to +85°C |
| Output Leakage Current | 0.2 µA max; OUT0 to OUT2, GSn = 00h, VOUTn = 21 V, TJ = +85°C to +125°C |
| Internal Pulldown Resistance | 1 MΩ typical, SDI |
| SDO Rise Time | 2 ns min, 6 ns nominal, 12 ns max; TA = -40°C to 85°C, VCC = 3.0 V to 5.5 V, CL = 15 pF, RL = 110 Ω, VLED = 5 V |
| OUTn Rise Time | 200 ns nominal, 400 ns max; OUTn on-to-off transition |
| SDO Fall Time | 2 ns min, 6 ns nominal, 12 ns max; TA = -40°C to 85°C, VCC = 3.0 V to 5.5 V, CL = 15 pF, RL = 110 Ω, VLED = 5 V |
| OUTn Fall Time | 200 ns nominal, 400 ns max; OUTn off-to-on transition |
| Propagation Delay SDI to SDO | 30 ns nominal, 50 ns max; SDI rising edge to SDO rising edge |
| Propagation Delay Between Outputs | 25 ns; OUT0 to OUT1 and OUT1 to OUT2 transitions |
| Shift Data Output Pulse Duration | 75 ns min, 125 ns nominal, 250 ns max; SDO rising edge to SDO falling edge |
| Internal GS Oscillator Frequency | 4 MHz min, 6 MHz nominal, 8 MHz max, fOSC |
| Datasheet Status | request_only |
Product Overview
The TLC59731 is a Texas Instruments 3-channel PWM LED driver for LED applications requiring three controlled sink-current outputs. OUT0, OUT1, and OUT2 each support up to 50 mA recommended LED output current, while the output terminal voltage is specified up to 21 V. Grayscale control is 8-bit with 256 steps and simple gamma correction.
Communication uses the single-wire EasySet SDI/SDO interface, with a 20 kHz minimum to 600 kHz maximum SDI data transfer rate. The device includes an internal grayscale clock oscillator specified at 4 MHz minimum, 6 MHz nominal, and 8 MHz maximum, supporting a 3.1 kHz typical display repeat rate.
Supply operation is specified from 3.0 V to 5.5 V in no internal shunt regulator mode, with a 6 V maximum in internal shunt regulator mode. The TLC59731 is supplied in the D package, SOIC (8), with a 4.90 mm x 3.91 mm nominal body and listed thermal resistance values for SOIC 8-pin assembly. The operating free-air range is -40°C to +85°C.
Key Features
- Three sink-current LED outputs, OUT0 to OUT2
- 50 mA maximum recommended LED current per channel
- 8-bit grayscale PWM with 256 control steps
- Single-wire EasySet SDI/SDO serial data interface
- 20 kHz to 600 kHz SDI data transfer rate
- Internal grayscale oscillator, 4 MHz to 8 MHz
- 3.1 kHz typical display repeat rate
- Output terminals support up to 21 V
- 3 V to 5.5 V VCC without shunt regulation
- Internal shunt regulator mode supports 6 V maximum VCC
- SOIC-8 package, 4.90 mm x 3.91 mm body
- -40°C to +85°C operating free-air temperature
Typical Applications
- Three-channel LED dimming
- RGB LED control
- PWM LED display modules
- Serial-controlled LED lighting
- 21 V LED output designs
- SOIC-8 LED driver assemblies
Procurement Notes
When requesting a quote for TLC59731, 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 power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
How many LED channels does the TLC59731 provide?
The TLC59731 provides three sink-current LED output channels, identified as OUT0 to OUT2. Each output channel has a 50 mA current capability and supports LED output terminal voltage up to 21 V.
What serial interface does the TLC59731 use?
The device uses a single-wire EasySet serial interface through SDI and SDO. The extracted timing data lists a 20 kHz minimum and 600 kHz maximum SDI transfer rate, with 600 kbps also specified for the EasySet interface.
What supply voltage ranges are specified for TLC59731?
Without internal shunt regulator mode, the recommended VCC range is 3.0 V minimum, 5 V nominal, and 5.5 V maximum. In internal shunt regulator mode, the recommended VCC maximum is 6 V.
What package is listed for the TLC59731?
The TLC59731 is listed in the D package, SOIC (8). The nominal body size for the SOIC (8) package is 4.90 mm x 3.91 mm, with thermal data specified for the SOIC 8-pin package.
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.