Specifications
| Type | Description |
|---|---|
| Part Number | TLC59284 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Package / Case | SSOP-24 / QSOP-24, DBQ package, 24 pins |
| Inferred Category | LED |
| Component Type | Power_IC |
| Channel Count | 16 channels; constant-current sink outputs OUT0 to OUT15 |
| Output Type | Constant-current sink; each channel individually controlled by serial interface |
| Constant Sink Current Capability | 35 mA max; VCC <= 3.6 V |
| Constant Sink Current Capability | 45 mA max; VCC > 3.6 V |
| LED Power-Supply Voltage | Up to 10 V; voltage applied to LED/output supply |
| Supply Voltage Range | 3 V to 5.5 V; recommended operating condition, VCC |
| Logic Compatibility | 3.3 V or 5 V CMOS logic levels; depending on operating VCC |
| Data Transfer Rate | 35 MHz; serial data transfer / SCLK |
| Data Shift Clock Frequency | 35 MHz max; SCLK, VCC = 3 V to 5.5 V |
| BLANK Pulse Width | 50 ns; feature list |
| Switching Delay | Supported; for noise reduction |
| Operating Free-Air Temperature | -40°C to +85°C; recommended operating condition, TA |
| Operating Junction Temperature | -40°C to +125°C; recommended operating condition, TJ |
| Supply Voltage Absolute Maximum | -0.3 V to +6 V; VCC over operating free-air temperature range |
| Input Voltage Range Absolute Maximum | -0.3 V to VCC + 0.3 V; SIN, SCLK, LAT, BLANK, IREF |
| SOUT Output Range Absolute Maximum | -0.3 V to VCC + 0.3 V; SOUT |
| OUTn Output Voltage Range Absolute Maximum | -0.3 V to +11 V; OUT0 to OUT15 |
| Output Current Absolute Maximum | +50 mA; DC output current, OUT0 to OUT15 |
| Maximum Operating Junction Temperature | +150°C; absolute maximum rating, TJ(MAX) |
| Storage Temperature Range | -55°C to +150°C; absolute maximum rating, Tstg |
| ESD Rating HBM | 4000 V; human body model |
| ESD Rating CDM | 2000 V; charged device model |
| Junction-to-Ambient Thermal Resistance | 91.5°C/W; DBQ package, 24 pins |
| Junction-to-Case Top Thermal Resistance | 55.2°C/W; DBQ package, 24 pins |
| Junction-to-Board Thermal Resistance | 44.9°C/W; DBQ package, 24 pins |
| Junction-to-Top Characterization Parameter | 16.8°C/W; DBQ package, 24 pins |
| Junction-to-Board Characterization Parameter | 44.5°C/W; DBQ package, 24 pins |
| Output Voltage Recommended Maximum | 10 V max; voltage applied to OUT0 to OUT15 |
| High-Level Input Voltage | 0.7 × VCC to VCC; SIN, SCLK, LAT, BLANK |
| Low-Level Input Voltage | GND to 0.3 × VCC; SIN, SCLK, LAT, BLANK |
| SOUT High-Level Output Current | -2 mA; IOH at SOUT |
| SOUT Low-Level Output Current | 2 mA; IOL at SOUT |
| Constant Output Sink Current Range | 2 mA to 35 mA; OUT0 to OUT15, 3 V <= VCC <= 3.6 V |
| Constant Output Sink Current Range | 2 mA to 45 mA; OUT0 to OUT15, 3.6 V < VCC <= 5.5 V |
| SCLK High Pulse Duration | 10 ns min; tWH0, SCLK |
| SCLK Low Pulse Duration | 10 ns min; tWL0, SCLK |
| LAT High Pulse Duration | 20 ns min; tWH1, LAT |
| BLANK High Pulse Duration | 100 ns min; tWH2, BLANK |
| BLANK Low Pulse Duration | 50 ns min; tWL2, BLANK |
| SIN Setup Time | 4 ns min; tSU0, SIN transition to SCLK rising edge |
| LAT Setup Time | 10 ns min; tSU1, LAT falling edge to SCLK rising edge |
| SIN Hold Time | 4 ns min; tH0, SIN transition to SCLK rising edge |
| LAT Hold Time | 10 ns min; tH1, LAT falling edge to SCLK rising edge |
| SOUT High Output Voltage | VCC - 0.4 V min, VCC max; IOH = -2 mA at SOUT |
| SOUT Low Output Voltage | 0.4 V max; IOL = 2 mA at SOUT |
| IREF Reference Voltage Output | 1.208 V typ; RIREF = 1.5 kΩ, TA = +25°C |
| Input Current | -1 µA min, 1 µA max; VIN = VCC or GND at SIN and SCLK |
| Supply Current ICC0 | 1 mA typ, 2 mA max; SIN, SCLK, LAT = GND; BLANK = VOUTn = VCC; RIREF = open |
| Supply Current ICC1 | 3 mA typ, 4 mA max; SIN, SCLK, LAT = GND; BLANK = VOUTn = VCC; RIREF = 3 kΩ; IOUT = 17.6 mA target |
| Supply Current ICC2 | 7 mA typ, 9 mA max; all OUTn on; SIN, SCLK, LAT, BLANK = GND; VOUTn = 0.8 V; RIREF = 3 kΩ |
| Supply Current ICC3 | 8 mA typ, 11 mA max; all OUTn on; SIN, SCLK, LAT, BLANK = GND; VOUTn = 0.8 V; RIREF = 1.5 kΩ; IOUT = 35.3 mA target |
| Constant Output Current | 32.9 mA min, 35.3 mA typ, 37.7 mA max; all OUTn on; VOUTn = VOUTfix = 0.8 V; RIREF = 1.5 kΩ; TA = +25°C |
| Output Leakage Current | 0.1 µA typ; all OUTn off; BLANK = VCC; RIREF = 1.5 kΩ; VOUTfix = 10 V; TJ = +25°C |
| Output Leakage Current | 0.2 µA typ; all OUTn off; BLANK = VCC; RIREF = 1.5 kΩ; VOUTfix = 10 V; TJ = +85°C |
| Output Leakage Current | 0.07 µA typ, 0.5 µA max; all OUTn off; BLANK = VCC; RIREF = 1.5 kΩ; VOUTfix = 10 V; TJ = +125°C |
| Channel-to-Channel Constant Current Error | ±1.4% typ, ±3% max; all OUTn on; VOUTn = VOUTfix = 0.8 V; RIREF = 1.5 kΩ; TA = +25°C |
| Device-to-Device Constant Current Error | ±2% typ, ±4% max; all OUTn on; VOUTn = VOUTfix = 0.8 V; RIREF = 1.5 kΩ; TA = +25°C |
| Line Regulation | ±0.05 %/V typ, ±1 %/V max; all OUTn on; VCC = 3 V to 5.5 V; VOUTn = VOUTfix = 0.8 V; RIREF = 1.5 kΩ |
| Load Regulation | ±0.5 %/V typ, ±1 %/V max; all OUTn on; VOUTn = 0.8 V to 3 V; VOUTfix = 0.8 V; RIREF = 1.5 kΩ |
| BLANK Pull-Up Resistor | 250 kΩ min, 500 kΩ typ, 750 kΩ max; internal pull-up to VCC |
| LAT Pull-Down Resistor | 250 kΩ min, 500 kΩ typ, 750 kΩ max; internal pull-down to GND |
| Ideal Output Current Formula | IOUT(IDEAL) = 43.8 × 1.208 V / RIREF; external resistor between IREF and GND |
| SOUT Rise Time | 3 ns typ, 10 ns max; CL = 15 pF, RL = 110 Ω, RIREF = 1.5 kΩ, VLED = 5.0 V |
| OUTn Rise Time | 44 ns typ; CL = 15 pF, RL = 110 Ω, RIREF = 1.5 kΩ, VLED = 5.0 V |
| SOUT Fall Time | 3 ns typ, 10 ns max; CL = 15 pF, RL = 110 Ω, RIREF = 1.5 kΩ, VLED = 5.0 V |
| OUTn Fall Time | 44 ns typ; CL = 15 pF, RL = 110 Ω, RIREF = 1.5 kΩ, VLED = 5.0 V |
| SCLK to SOUT Propagation Delay | 11 ns typ, 20 ns max; SCLK rising edge to SOUT transition |
| LAT or BLANK to OUT0 Propagation Delay | 60 ns typ, 100 ns max; LAT rising edge or BLANK transition to OUT0 on/off, TA = +25°C |
| Grouped OUTn Switching Delay | 2 ns typ; grouped OUTn on/off to next group on/off, TA = +25°C |
| Output On-Time Error | -45 ns min, 45 ns max; all output latch data = '1', 50 ns BLANK low pulse, VCC = 3.3 V, TA = +25°C |
| Ordering Number | TLC59284DBQR; tape and reel, 2500 quantity |
| Ordering Number | TLC59284DBQ; tube, 50 quantity |
| BLANK Pin Function | Forces all constant-current outputs off when high; OUT0 to OUT15 forced off |
| LAT Pin Function | Level-triggered latch; shift-register data transfers while LAT is high and is held when LAT is low |
| Serial Shift Register Width | 16-bit; one bit per channel, shifted toward MSB by SCLK rising edge |
| SOUT Function | Connected to 16-bit shift register MSB; SOUT data changes at SCLK rising edge |
| Output Parallel Capability | Outputs can be tied together to increase constant current; different voltages can be applied to each output |
| Datasheet Status | request_only |
Product Overview
The TLC59284 is a Texas Instruments LED driver built around 16 constant-current sink outputs, OUT0 through OUT15. Each channel is individually controlled through a serial interface, with a 16-bit shift register that shifts data toward the MSB on SCLK rising edges. SOUT connects to the shift-register MSB and changes data on the SCLK rising edge for serial chaining.
The driver operates from a recommended VCC range of 3 V to 5.5 V and supports 3.3 V or 5 V CMOS logic levels depending on VCC. Constant output sink current ranges are 2 mA to 35 mA for 3 V <= VCC <= 3.6 V and 2 mA to 45 mA for 3.6 V < VCC <= 5.5 V. LED/output voltage is rated up to 10 V recommended, with OUTn absolute maximum from -0.3 V to +11 V.
The DBQ 24-pin package is listed as SSOP-24 / QSOP-24. Thermal data includes 91.5°C/W junction-to-ambient resistance and +150°C absolute maximum junction temperature. BLANK forces all outputs off when high, LAT is a level-triggered latch, and outputs may be tied together to increase constant current.
Key Features
- 16 constant-current sink outputs OUT0 through OUT15
- 35 mA maximum sink current at VCC <= 3.6 V
- 45 mA maximum sink current at VCC > 3.6 V
- 3 V to 5.5 V recommended VCC range
- Up to 10 V LED/output supply voltage
- 35 MHz maximum SCLK data shift frequency
- BLANK input forces all outputs off when high
- Level-triggered LAT transfers shift data while high
- 16-bit serial shift register, one bit per channel
- Outputs can be tied together for increased current
Typical Applications
- 16-channel LED current-sink driving
- Serial-controlled LED output banks
- 3.3 V CMOS logic LED systems
- 5 V CMOS logic LED systems
- LED strings with up to 10 V output supply
- Parallel-output higher-current LED channels
Procurement Notes
When requesting a quote for TLC59284, 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
What type of LED driver is the TLC59284?
The TLC59284 is a Texas Instruments 16-channel constant-current LED driver. Its OUT0 to OUT15 pins are constant-current sink outputs, and each channel is individually controlled through the serial interface.
What supply voltage range does the TLC59284 support?
The recommended VCC operating range is 3 V to 5.5 V. The device supports 3.3 V or 5 V CMOS logic levels depending on the operating VCC, while the LED/output supply voltage can be up to 10 V.
How much current can each output sink?
The TLC59284 supports 2 mA to 35 mA output sink current from 3 V <= VCC <= 3.6 V, and 2 mA to 45 mA from 3.6 V < VCC <= 5.5 V. Absolute maximum DC output current is +50 mA.
How does the BLANK pin affect the outputs?
When BLANK is high, all constant-current outputs OUT0 to OUT15 are forced off. The datasheet facts also list a BLANK high pulse duration of 100 ns minimum and a BLANK low pulse duration of 50 ns minimum.
What package is listed for the TLC59284?
The package/case information is SSOP-24 / QSOP-24, DBQ package with 24 pins. Thermal data for the DBQ package includes 91.5°C/W junction-to-ambient thermal resistance.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 25, 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.