Specifications
| Type | Description |
|---|---|
| Part Number | TLC5923 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Component Type | Power_IC |
| Package / Case | 32-pin HTSSOP PowerPAD (DAP); 32-pin 5 mm x 5 mm QFN (RHB) |
| Number of channels | 16 channels; constant-current sink LED driver |
| Output current drive capability | 0 to 80 mA per channel; constant-current sink |
| Constant current accuracy | ±1% typ; typical accuracy |
| Serial data transfer rate | 30 MHz; serial data interface |
| Fast switching output rise/fall time | 10 ns typ; Tr/Tf typical |
| Supply voltage operating range | 3.0 to 5.5 V; VCC recommended operating condition |
| Operating free-air temperature | -40 to 85 °C; recommended operating condition |
| LED output supply voltage | Up to 17 V; voltage applied to OUT0-OUT15, recommended maximum |
| Dot correction resolution | 7 bit, 128 steps; individually adjustable for each channel |
| Output current absolute maximum | 90 mA; IO, OUT0 to OUT15, DC absolute maximum |
| Supply voltage absolute maximum | -0.3 to 6 V; VCC absolute maximum rating |
| Input voltage absolute maximum | -0.3 to VCC + 0.3 V; BLANK, XLAT, SCLK, SIN, MODE, IREF |
| Logic output voltage absolute maximum | -0.3 to VCC + 0.3 V; SOUT and XERR |
| Output terminal voltage absolute maximum | -0.3 to 18 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 |
| Power dissipation derating, HTSSOP DAP | 42.54 mW/°C; at or above TA=25°C, PowerPAD package |
| Power dissipation derating, QFN RHB | 27.86 mW/°C; at or above TA=25°C |
| High-level input voltage | 0.8 VCC to VCC; VIH recommended operating condition |
| Low-level input voltage | GND to 0.2 VCC; 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 |
| 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; twh0/twl0, SCLK high or low |
| XLAT pulse duration | 20 ns min; twh1, XLAT high |
| SIN to SCLK rising setup time | 10 ns min; tsu0 |
| SCLK rising to XLAT falling setup time | 10 ns min; tsu1, dot-correction data |
| SCLK rising to XLAT rising setup time | 10 ns min; tsu1a, ON/OFF data |
| MODE transition to SCLK rising setup time | 10 ns min; tsu2 |
| MODE transition to XLAT rising setup time | 10 ns min; tsu3 |
| SCLK rising to SIN hold time | 10 ns min; th0 |
| XLAT falling to SCLK rising hold time | 10 ns min; th1, dot-correction data |
| XLAT rising to SCLK rising hold time | 10 ns min; th1a, 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 typ; no data transfer, all outputs off, VO=1 V, RIREF=10 kΩ |
| Supply current | 15 mA typ; no data transfer, all outputs off, VO=1 V, RIREF=1.3 kΩ |
| Supply current | 32 mA typ; data transfer 30 MHz, all outputs on, VO=1 V, RIREF=1.3 kΩ |
| Supply current | 36 mA typ, 65 mA max; data transfer 30 MHz, all outputs on, VO=1 V, RIREF=600 Ω |
| Constant sink current | 70 mA min, 80 mA typ, 90 mA max; all outputs on, VO=1 V, RIREF=600 Ω |
| Output leakage current | 0.1 µA typ; all outputs off, VO=15 V, RIREF=600 Ω, OUT0 to OUT15 |
| XERR leakage current | 10 µA max; VCC=5.5 V, no TEF and LOD |
| Channel-to-channel constant sink current error | ±1% typ, ±4% max; all outputs on, VO=1 V, RIREF=600 Ω, OUT0 to OUT15 |
| Device-to-device constant sink current error | ±4% typ, ±8.5% max; averaged current from OUT0 to OUT15, RIREF=600 Ω |
| Line regulation | ±1 %/V typ, ±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 typ, ±6 %/V max; all outputs on, VO=1 V to 3 V, RIREF=600 Ω, OUT0 to OUT15 |
| Thermal error flag threshold | 150 °C min, 160 °C typ, 180 °C max; junction temperature, rising temperature; specified by design |
| LED open detection threshold | 0.3 V typ, 0.4 V max; VLOD |
| Reference voltage output | 1.20 V min, 1.24 V typ, 1.28 V max; VIREF, RIREF=600 Ω |
| Power rating, HTSSOP PowerPAD soldered | 5318 mW at TA<25°C; 3403 mW at TA=70°C; 2765 mW at TA=85°C; 32-pin HTSSOP with PowerPAD soldered to PCB with 2 oz copper trace |
| Power rating, HTSSOP PowerPAD unsoldered | 2820 mW at TA<25°C; 1805 mW at TA=70°C; 1466 mW at TA=85°C; 32-pin HTSSOP with PowerPAD unsoldered |
| Power rating, QFN | 3482 mW at TA<25°C; 2228 mW at TA=70°C; 1811 mW at TA=85°C; 32-pin QFN |
| SOUT rise time | 16 ns typ; tr0, SOUT test circuit |
| OUTn rise time | 10 ns typ, 30 ns max; tr1, OUTn, VCC=5 V, TA=60°C, DCx=7F |
| SOUT fall time | 16 ns typ; tf0, SOUT test circuit |
| OUTn fall time | 10 ns typ, 30 ns max; tf1, OUTn, VCC=5 V, TA=60°C, DCx=7F |
| SCLK to SOUT propagation delay | 30 ns max; tpd0, SCLK rising to SOUT transition |
| MODE to SOUT propagation delay | 30 ns max; tpd1, MODE transition to SOUT transition |
| BLANK to OUT0 propagation delay | 60 ns max; tpd2, sink current on/off |
| XLAT to OUT0 propagation delay | 60 ns max; tpd3, XLAT rising to OUT0 transition |
| OUTn to XERR propagation delay | 1000 ns max; tpd4, OUTn transition to XERR transition |
| XLAT to output current propagation delay | 1000 ns max; tpd5, dot-correction update |
| Output delay time between adjacent channels | 14 ns min, 22 ns typ, 30 ns max; OUTn to OUT(n+1) rising or falling transition |
| Maximum current setting equation | IMAX = (VIREF / RIREF) × 40; VIREF=1.24 V typ; RIREF must not be smaller than 600 Ω |
| Dot correction output current equation | 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 TLC5923 is a Texas Instruments 16-channel LED driver built as a constant-current sink device. Each output channel supports 0 to 80 mA current drive, with constant-current accuracy specified at ±1% typical. Output current can be adjusted per channel using 7-bit, 128-step dot correction, with a 112-bit dot-correction data packet arranged as 16 channels of 7-bit words, MSB first.
The driver operates from a 3.0 to 5.5 V recommended VCC range and supports LED output voltage up to 17 V at OUT0 through OUT15. Recommended free-air operating temperature is -40 to 85 °C. Absolute maximum ratings include 90 mA output current, -0.3 to 18 V output terminal voltage, and -40 to 150 °C storage temperature.
Packaging options include a 32-pin HTSSOP PowerPAD (DAP) and a 32-pin 5 mm x 5 mm QFN (RHB). Thermal and assembly considerations are reflected in separate power ratings for HTSSOP PowerPAD soldered, HTSSOP PowerPAD unsoldered, and QFN configurations. The device is suited to LED drive applications needing multi-channel constant-current control, serial data transfer, dot correction, and diagnostic outputs.
Key Features
- 16-channel constant-current sink LED driver
- 0 to 80 mA output current per channel
- ±1% typical constant-current accuracy
- 30 MHz serial data interface and SCLK operation
- 7-bit, 128-step dot correction per channel
- 3.0 to 5.5 V recommended VCC range
- LED output voltage supported up to 17 V
- 10 ns typical OUTn rise and fall times
- Thermal error flag threshold specified by design
- LED open detection threshold of 0.3 V typical
Typical Applications
- Multi-channel LED drive circuits
- Constant-current LED sink outputs
- LED modules requiring dot correction
- Serial-controlled LED output banks
- LED systems with open detection
- LED drivers needing thermal flagging
Procurement Notes
When requesting a quote for TLC5923, 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 TLC5923 provide?
The TLC5923 provides 16 constant-current sink output channels. Each channel is intended for LED driving and supports independently adjustable 7-bit dot correction across 128 steps.
What output current range is specified for TLC5923 channels?
The extracted datasheet facts specify 0 to 80 mA constant-current sink drive capability per channel. Under the listed RIREF=600 Ω condition, constant sink current is 70 mA minimum, 80 mA typical, and 90 mA maximum.
What supply voltage range does the TLC5923 use?
The recommended VCC operating range for the TLC5923 is 3.0 to 5.5 V. The absolute maximum VCC rating is -0.3 to 6 V, while OUT0 through OUT15 support a recommended LED output supply voltage up to 17 V.
Which packages are listed for the TLC5923?
The listed package options are 32-pin HTSSOP PowerPAD (DAP) and 32-pin 5 mm x 5 mm QFN (RHB). Power ratings differ by package and by whether the HTSSOP PowerPAD is soldered to the PCB.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 27, 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.