Specifications
| Type | Description |
|---|---|
| Part Number | TLC59281 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Component Type | Power_IC |
| Package / Case | SSOP-24/QSOP-24 DBQ; QFN-24 RGE |
| Number of Output Channels | 16; constant-current sink outputs OUT0 to OUT15 |
| Output Current Capability | 35 mA; constant-current sink capability |
| LED Power-Supply Voltage | up to 17 V; voltage applied to LED/output supply |
| Supply Voltage | 3.0 to 5.5 V; recommended operating condition, VCC |
| Absolute Maximum Supply Voltage | -0.3 to +6.0 V; VCC over operating free-air temperature range |
| Absolute Maximum Output Current | 40 mA; OUT0 to OUT15, dc |
| Input Voltage Range | -0.3 to VCC + 0.3 V; SIN, SCLK, LAT, BLANK, IREF |
| SOUT Output Voltage Range | -0.3 to VCC + 0.3 V; SOUT |
| OUTn Output Voltage Range | -0.3 to +18 V; OUT0 to OUT15 absolute maximum |
| Maximum Operating Junction Temperature | +150 °C; absolute maximum TJ(MAX) |
| Storage Temperature Range | -55 to +150 °C; TSTG |
| ESD Rating HBM | 2 kV; human body model |
| ESD Rating CDM | 500 V; charged device model |
| Recommended Output Voltage | 17 V max; voltage applied to OUT0 to OUT15 |
| High-Level Input Voltage | 0.7 × VCC to VCC V; VIH |
| Low-Level Input Voltage | GND to 0.3 × VCC V; VIL |
| High-Level Output Current | -1 mA; SOUT |
| Low-Level Output Current | 1 mA; SOUT |
| Constant Output Sink Current Range | 2 to 35 mA; OUT0 to OUT15 |
| Operating Free-Air Temperature Range | -40 to +85 °C; TA |
| Operating Junction Temperature Range | -40 to +125 °C; TJ |
| Data Shift Clock Frequency | 35 MHz max; SCLK, VCC = 3 V to 5.5 V |
| SCLK High Pulse Duration | 10 ns min; TWH0 |
| SCLK Low Pulse Duration | 10 ns min; TWL0 |
| LAT Pulse Duration | 20 ns min; TWH1 |
| BLANK High Pulse Duration | 20 ns min; TWH2 |
| BLANK Low Pulse Duration | 20 ns min; TWL2 |
| SIN Setup Time | 4 ns min; SIN to SCLK rising edge, TSU0 |
| LAT Setup Time | 100 ns min; LAT rising edge to SCLK rising edge, TSU1 |
| SIN Hold Time | 3 ns min; SIN to SCLK rising edge, TH0 |
| LAT Hold Time | 10 ns min; LAT rising edge to SCLK rising edge, TH1 |
| SOUT High-Level Output Voltage | VCC - 0.4 V min, VCC typ; IOH = -1 mA at SOUT |
| SOUT Low-Level Output Voltage | 0 V typ, 0.4 V max; IOL = 1 mA at SOUT |
| Input Current | -1 to +1 mA; VIN = VCC or GND at SIN, SCLK, LAT, and BLANK |
| Supply Current ICC1 | 1 mA typ, 2 mA max; RIREF = 27 kΩ, SIN/SCLK/LAT = low, BLANK = high, VOUTn = 1 V |
| Supply Current ICC2 | 4.5 mA typ, 8 mA max; RIREF = 3 kΩ, SIN/SCLK/LAT = low, BLANK = high, VOUTn = 1 V |
| Supply Current ICC3 | 7 mA typ, 18 mA max; RIREF = 3 kΩ, SIN/SCLK/LAT/BLANK = low, VOUTn = 1 V |
| Supply Current ICC4 | 16 mA typ, 40 mA max; RIREF = 1.5 kΩ, SIN/SCLK/LAT/BLANK = low, VOUTn = 1 V |
| Constant Output Current | 31 mA min, 34 mA typ, 37 mA max; all OUTn on, VOUTn = VOUTfix = 1 V, RIREF = 1.5 kΩ |
| Output Leakage Current | 0.1 mA max; all outputs off, BLANK = high, VOUTn = VOUTfix = 17 V, RIREF = 1.5 kΩ |
| Channel-to-Channel Constant-Current Error | ±1% typ, ±3% max; all OUT0 to OUT15 on, VOUTn = VOUTfix = 1 V, RIREF = 1.5 kΩ |
| Device-to-Device Constant-Current Error | ±1% typ, ±6% max; all OUT0 to OUT15 on, VOUTn = VOUTfix = 1 V, RIREF = 1.5 kΩ |
| Line Regulation | ±0.5 %/V typ, ±1 %/V max; all OUT0 to OUT15 on, VOUTn = VOUTfix = 1 V, RIREF = 1.5 kΩ |
| Load Regulation | ±1 %/V typ, ±3 %/V max; all OUTn on, VOUTn = 1 V to 3 V, VOUTfix = 1 V, RIREF = 1.5 kΩ |
| IREF Reference Voltage Output | 1.16 V min, 1.20 V typ, 1.24 V max; RIREF = 1.5 kΩ |
| Ideal Output Current Formula | IOUT(IDEAL) = 42 × 1.20 / RIREF; ideal current calculation |
| SOUT Rise Time | 5 ns typ, 15 ns max; CL = 15 pF, RL = 130 Ω, RIREF = 1.5 kΩ, VLED = 5.5 V |
| OUTn Rise Time | 10 ns typ, 30 ns max; CL = 15 pF, RL = 130 Ω, RIREF = 1.5 kΩ, VLED = 5.5 V |
| SOUT Fall Time | 5 ns typ, 15 ns max; CL = 15 pF, RL = 130 Ω, RIREF = 1.5 kΩ, VLED = 5.5 V |
| OUTn Fall Time | 10 ns typ, 30 ns max; CL = 15 pF, RL = 130 Ω, RIREF = 1.5 kΩ, VLED = 5.5 V |
| SCLK to SOUT Propagation Delay | 8 ns typ, 20 ns max; SCLK rising edge to SOUT |
| Output Sink Current Turn-On Propagation Delay | 12 ns typ, 30 ns max; LAT rising edge or BLANK falling edge to OUTn sink current on |
| Output Sink Current Turn-Off Propagation Delay | 12 ns typ, 30 ns max; LAT rising edge or BLANK rising edge to OUTn sink current off |
| Output On-Time Error | -8 to +8 ns; on/off latch data = all 1, 20 ns BLANK low-level one-shot pulse input |
| Data Transfer Rate | 35 MHz; serial data transfer rate |
| High-Speed Constant-Current Switching Transient Time | 10 ns; feature specification |
| SSOP-24/QSOP-24 Power Rating | 1782 mW at TA < +25°C; 1140 mW at TA = +70°C; 927 mW at TA = +85°C; operating factor 14.3 mW/°C above TA = +25°C |
| QFN-24 Power Rating | 3106 mW at TA < +25°C; 1988 mW at TA = +70°C; 1615 mW at TA = +85°C; operating factor 24.8 mW/°C above TA = +25°C |
| Datasheet Status | request_only |
Product Overview
The TLC59281 is a Texas Instruments 16-channel constant-current LED driver for LED applications requiring OUT0 to OUT15 current-sink outputs. Each output supports constant-current sink operation, with a recommended output current range of 2 to 35 mA and a constant-current sink capability of 35 mA. The LED/output supply voltage is specified up to 17 V, with recommended OUT0 to OUT15 voltage of 17 V maximum.
The device uses a 3.0 to 5.5 V VCC supply and serial control pins including SIN, SCLK, LAT, BLANK, IREF, and SOUT. It supports a 35 MHz data shift clock and 35 MHz serial data transfer rate. Timing parameters include 10 ns minimum SCLK high and low pulses, 20 ns minimum LAT and BLANK pulse durations, 4 ns minimum SIN setup time, and 3 ns minimum SIN hold time.
Package options include SSOP-24/QSOP-24 DBQ and QFN-24 RGE. Thermal and assembly limits include -40 to +85 °C operating free-air temperature, -40 to +125 °C operating junction temperature, +150 °C maximum junction temperature, and -55 to +150 °C storage temperature. These parameters suit LED display, signage, and multi-channel indicator designs using constant-current sink outputs.
Key Features
- 16 constant-current sink outputs OUT0 to OUT15
- 2 to 35 mA constant output sink range
- 35 mA constant-current sink capability per output
- LED/output supply voltage supports up to 17 V
- 3.0 to 5.5 V recommended VCC range
- 35 MHz maximum SCLK data shift clock
- 10 ns high-speed constant-current switching transient time
- ±1% typical channel-to-channel current error
- SOUT propagation delay is 8 ns typical, 20 ns maximum
- SSOP-24/QSOP-24 DBQ and QFN-24 RGE packages
Typical Applications
- LED display panels
- Multi-channel LED indicators
- LED signage modules
- Serial-controlled LED arrays
- Constant-current LED lighting
- OUT0 to OUT15 sink-drive systems
Procurement Notes
When requesting a quote for TLC59281, 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 output channels does TLC59281 provide?
TLC59281 provides 16 constant-current sink outputs, identified as OUT0 through OUT15. The extracted datasheet facts specify 16 output channels for constant-current sink operation.
What supply voltage range is recommended for TLC59281?
The recommended VCC operating supply range is 3.0 to 5.5 V. The absolute maximum VCC range is -0.3 to +6.0 V over the operating free-air temperature range.
What output current range does TLC59281 support?
The recommended constant output sink current range is 2 to 35 mA for OUT0 to OUT15. The extracted facts also list 35 mA constant-current sink capability and 40 mA absolute maximum dc output current.
Which packages are listed for TLC59281?
The package and case information lists SSOP-24/QSOP-24 DBQ and QFN-24 RGE. Separate power ratings are provided for the SSOP-24/QSOP-24 and QFN-24 package options.
What serial data speed does TLC59281 support?
TLC59281 supports a 35 MHz maximum SCLK data shift clock frequency over VCC from 3 V to 5.5 V. The serial data transfer rate is also listed as 35 MHz.
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.