Specifications
| Type | Description |
|---|---|
| Part Number | TLC5924 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Package / Case | 32-pin HTSSOP PowerPAD (DAP); 32-pin 5 mm x 5 mm QFN (RHB) |
| Number of channels | 16; constant-current sink outputs OUT0 to OUT15 |
| Output current drive capability | 0 to 80 mA; constant-current sink per channel |
| Constant current accuracy | ±1% typical; typical channel-to-channel accuracy |
| Dot correction resolution | 7 bit, 128 steps; individually adjustable for each channel |
| Data transfer rate | 30 MHz; serial data interface |
| Fast switching output rise/fall time | 10 ns typical; Tr/Tf typical |
| Supply voltage operating range | 3.0 to 5.5 V; VCC recommended operating condition |
| Pre-charge voltage operating range | 3 to 15 V; VUP recommended operating condition |
| LED supply voltage | up to 17 V; feature summary |
| Operating free-air temperature | -40 to 85 °C; TA recommended operating range |
| Absolute maximum supply voltage | -0.3 to 6 V; VCC, with respect to GND |
| Absolute maximum pre-charge voltage | -0.3 to 16 V; VUP, with respect to GND |
| Absolute maximum output current | 90 mA; DC output current, OUT0 to OUT15 |
| Input voltage range | -0.3 to VCC + 0.3 V; BLANK, XLAT, SCLK, SIN, MODE, IREF |
| Logic output voltage range | -0.3 to VCC + 0.3 V; SOUT, XERR |
| Constant-current output voltage range | -0.3 to VUP V; OUT0 to OUT15 |
| ESD rating, HBM | 2 kV; JEDEC JESD22-A114 Human Body Model |
| ESD rating, CDM | 500 V; JEDEC JESD22-C101 Charged Device Model |
| Storage temperature range | -40 to 150 °C; Tstg absolute maximum rating |
| High-level input voltage | 0.8VCC to VCC; VIH recommended operating condition |
| Low-level input voltage | GND to 0.2VCC; VIL recommended operating condition |
| High-level output current | -1 mA; IOH, VCC=5 V at SOUT |
| Low-level output current | 1 mA; IOL, VCC=5 V at SOUT and XERR |
| Recommended constant output current | 80 mA max; IOLC, OUT0 to OUT15 |
| Clock frequency | 30 MHz max; SCLK, VCC=3 V to 5.5 V, TA=-40°C to 85°C |
| SCLK pulse duration | 16 ns min; SCLK high or low pulse duration |
| XLAT pulse duration | 20 ns min; XLAT high pulse duration |
| SIN to SCLK setup time | 10 ns min; SIN to SCLK rising edge |
| SCLK to XLAT setup time, dot correction | 10 ns min; SCLK rising edge to XLAT falling edge for dot correction data |
| SCLK to XLAT setup time, ON/OFF data | 10 ns min; SCLK rising edge to XLAT rising edge for ON/OFF data |
| High-level output voltage | VCC - 0.5 V min; VOH, IOH=-1 mA, SOUT |
| Low-level output voltage | 0.5 V max; VOL, IOL=1 mA, SOUT |
| Input current | -1 to 1 µA; VI=VCC or GND; BLANK, XLAT, SCLK, SIN, MODE |
| Supply current | 6 mA typical; no data transfer, all outputs off, VO=1 V, RIREF=10 kΩ |
| Supply current | 15 mA typical; no data transfer, all outputs off, VO=1 V, RIREF=1.3 kΩ |
| Supply current | 32 mA typical; data transfer at 30 MHz, all outputs on, VO=1 V, RIREF=1.3 kΩ |
| Supply current | 36 mA typical, 65 mA max; data transfer at 30 MHz, all outputs on, VO=1 V, RIREF=600 Ω |
| Constant sink current | 70 mA min, 80 mA typical, 90 mA max; all outputs on, VO=1 V, RIREF=600 Ω |
| Output leakage current | 0.1 µA typical; all outputs off, VO=15 V, RIREF=600 Ω, OUT0 to OUT15 |
| XERR leakage current | 10 µA max; V=5.5 V, no TEF and LOD |
| Constant sink current error, channel-to-channel | ±1% typical, ±4% max; all outputs on, VO=1 V, RIREF=600 Ω, OUT0 to OUT15 |
| Constant sink current error, device-to-device | ±4% typical, ±8.5% max; RIREF=600 Ω, averaged current from OUT0 to OUT15 |
| Line regulation | ±1 %/V typical, ±4 %/V max; all outputs on, VO=1 V, RIREF=600 Ω, OUT0 to OUT15, VCC=3 V to 5.5 V |
| Load regulation | ±2 %/V typical, ±6 %/V max; all outputs on, VO=1 V to 3 V, RIREF=600 Ω, OUT0 to OUT15 |
| Pre-charge FET on-resistance | 10 kΩ typical; VUP=3 V, VO=0 V, OUT0 to OUT15 |
| Thermal error flag threshold | 150°C min, 160°C typical, 180°C max; junction temperature, rising temperature; specified by design |
| LED open detection threshold | 0.3 V min, 0.4 V typical; VLOD |
| Reference voltage output | 1.20 V min, 1.24 V typical, 1.28 V max; RIREF=600 Ω |
| Power rating, HTSSOP PowerPAD soldered | 5318 mW; TA < 25°C |
| Derating factor, HTSSOP PowerPAD soldered | 42.54 mW/°C; above TA=25°C |
| Power rating, HTSSOP PowerPAD soldered at 70°C | 3403 mW; TA=70°C |
| Power rating, HTSSOP PowerPAD soldered at 85°C | 2765 mW; TA=85°C |
| Power rating, QFN | 3482 mW; TA < 25°C |
| Derating factor, QFN | 27.86 mW/°C; above TA=25°C |
| Power rating, QFN at 70°C | 2228 mW; TA=70°C |
| Power rating, QFN at 85°C | 1811 mW; TA=85°C |
| SOUT rise time | 16 ns typical; SOUT, measured from 10% to 90% |
| OUTn rise time | 10 ns typical, 30 ns max; OUTn, VCC=5 V, TA=60°C, DCx=7F, measured from 10% to 90% |
| SOUT fall time | 16 ns typical; SOUT, measured from 10% to 90% |
| OUTn fall time | 10 ns typical, 30 ns max; OUTn, VCC=5 V, TA=60°C, DCx=7F, measured from 10% to 90% |
| Propagation delay, SCLK to SOUT | 30 ns max; SCLK rising edge to SOUT transition |
| Propagation delay, MODE to SOUT | 30 ns max; MODE transition to SOUT transition |
| Propagation delay, BLANK to OUT0 | 80 ns max; BLANK transition to OUT0 transition, sink current on/off |
| Propagation delay, XLAT to OUT0 | 60 ns max; XLAT rising edge to OUT0 transition |
| Propagation delay, OUTn to XERR | 1000 ns max; OUTn transition to XERR transition |
| Propagation delay, XLAT to output current | 1000 ns max; XLAT rising edge to IOUT for dot correction |
| Output delay time | 14 ns min, 22 ns typical, 30 ns max; OUTn to OUT(n+1) rising or falling transition |
| Maximum channel current formula | IMAX = (VIREF / RIREF) × 40; VIREF=1.24 V typical; RIREF should not be smaller than 600 Ω |
| Dot correction output current formula | IOutn = IMAX × DCn / 127; DCn=0 to 127, n=0 to 15 |
| Dot correction data packet width | 112 bits; 16 channels × 7-bit words, MSB first |
| Datasheet Status | request_only |
Product Overview
The TLC5924 is a Texas Instruments 16-channel LED driver built around constant-current sink outputs OUT0 through OUT15. Each channel supports 0 to 80 mA constant-current drive, with a recommended maximum constant output current of 80 mA and an absolute maximum DC output current of 90 mA. Channel current is set using the IREF relationship IMAX = (VIREF / RIREF) × 40, with 1.24 V typical VIREF and RIREF not smaller than 600 Ω.
Per-channel dot correction is provided with 7-bit, 128-step adjustment. Dot correction current follows IOutn = IMAX × DCn / 127 for DCn values from 0 to 127, and the dot-correction data packet is 112 bits for 16 channels × 7-bit words, transferred MSB first.
The device operates from 3.0 to 5.5 V VCC and supports a 3 to 15 V VUP pre-charge range, with LED supply voltage up to 17 V. Package options include 32-pin HTSSOP PowerPAD (DAP) and 32-pin 5 mm × 5 mm QFN (RHB), with specified power ratings and derating factors for both packages.
Key Features
- 16 constant-current sink outputs OUT0 to OUT15
- 0 to 80 mA current drive per channel
- 7-bit dot correction with 128 per-channel steps
- 30 MHz serial data interface and SCLK rate
- 3.0 to 5.5 V VCC operating range
- 3 to 15 V VUP pre-charge range
- LED supply voltage supported up to 17 V
- Typical OUTn rise and fall time of 10 ns
- Thermal error flag threshold specified by design
- LED open detection threshold of 0.4 V typical
Typical Applications
- Multi-channel LED driver boards
- Serial-controlled LED arrays
- Dot-corrected LED display channels
- Constant-current LED sink systems
- LED modules requiring open detection
- LED systems with thermal error flagging
- High-speed LED switching outputs
Procurement Notes
When requesting a quote for TLC5924, 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 TLC5924 provide?
The TLC5924 provides 16 constant-current sink outputs, identified as OUT0 through OUT15. Each channel can be individually adjusted through 7-bit dot correction with 128 available steps.
What current range is supported per TLC5924 output channel?
Each constant-current sink channel supports 0 to 80 mA drive capability. The recommended constant output current is 80 mA maximum, while the absolute maximum DC output current for OUT0 to OUT15 is 90 mA.
What serial interface speed does the TLC5924 support?
The TLC5924 supports a 30 MHz serial data interface. The SCLK frequency is specified at 30 MHz maximum across VCC from 3 V to 5.5 V and TA from -40°C to 85°C.
What package options are listed for the TLC5924?
The listed package options are a 32-pin HTSSOP PowerPAD package with DAP and a 32-pin 5 mm × 5 mm QFN package identified as RHB.
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.