TLC5946PWPR
The TLC5946 is a 16-channel constant-current LED driver with 12-bit PWM grayscale dimming and 6-bit dot correction per channel. It includes fault detection (LED open and short-to-ground/VLED), an error flag and power-good, with a 30 MHz typical data rate, operating from -40 to 85 C. It is used in LED displays and dynamic lighting.
- Package
- HTSSOP-28
Product overview
The TLC5946 is a 16-channel constant-current LED driver with 12-bit PWM grayscale dimming and 6-bit dot correction per channel. It includes fault detection (LED open and short-to-ground/VLED), an error flag and power-good, with a 30 MHz typical data rate, operating from -40 to 85 C. It is used in LED displays and dynamic lighting.
- Manufacturer
- TI
- Part number
- TLC5946PWPR
- Category
- Power Management
- Package
- HTSSOP-28
- Packaging
- Tape & Reel
- Condition
- New & Original
- Compliance
- RoHS & REACH Compliant
- Lifecycle
- Confirm with manufacturer
- Lead time / MOQ
- Confirm with quotation
Technical parameters
43 parametersConstruction
- SOUT
- 1 mA
- XERR
- 5 mA
- TA
- +85 °C
- SCLK, XHALF =
- 30 MHz
- GSCLK, XHALF =
- 15 MHz
- fCLK (gsclk) Grayscale control clock frequency
- 33 MHz
- TWH0 / TWL0 SCLK pulse duration SCLK = H/L (see Figure 12)
- 10 ns
- TWH1 / TWL1 GSCLK pulse duration GSCLK = H/L (see Figure 12)
- 10 ns
- TWH2 XLAT pulse duration XLAT = H (see Figure 12)
- 20 ns
- TWH3 BLANK pulse duration BLANK = H (see Figure 12)
- 20 ns
- TSU0 SIN–SCLK↑ (see Figure 12)
- 5 ns
- TSU1
- 100 ns
- TSU2 MODE–SCLK↑ (see Figure 12)
- 10 ns
- TSU3 Setup time MODE–XLAT↑ (see Figure 12)
- 10 ns
- TSU4 BLANK↓–GSCLK↑ (see Figure 12)
- 10 ns
- TSU5 XLAT↑–GSCLK↑ (see Figure 12)
- 30 ns
- TSU6
- 10 ns
- TH0 SIN–SCLK↑ (see Figure 12)
- 3 ns
- TH1 Hold time MODE–SCLK↓ (see Figure 12)
- 10 ns
- TH2 MODE–XLAT↑ (see Figure 12)
- 100 ns
- TWL2 XLAT pulse duration XLAT = L (see Figure 38)
- 20 ns
- TSU7 Setup time BLANK↑–XLAT↑ (see Figure 38)
- 20 ns
- TH3 Hold time BLANK↓–XLAT↓ (see Figure 38)
- 20 ns
- IOL
- = 1 mA
- ICC1
- 0.9
- DCn
- = 3Fh
- ICC2
- 4
- ICC3
- 13
- ICC4
- 20
- ΔIOLC2 Line regulation
- ±0.5
- VCC
- = 3.0 V
- ΔIOLC3 Load regulation
- ±1
- IOL = 1 mA at
- 0.4 V
- IOL = 5 mA at
- 0.5 V
- ΔIOLC All OUTn = ON, VOUTn = 1 V, VOUTfix = 1 V, DCn = 3Fh
- ±1 %
Performance
- VCC Supply voltage
- 5.5 V
- VO Voltage applied to output OUT0 to
- 17 V
- VIL Low-level input voltage
- 0.3 × V V
- IOH High-level output current
- 1 mA
- IOLC Constant output sink current OUT0 to OUT15, DC = 3Fh
- 40 mA
- TJ Operating junction temperature
- +125 °C
- IIN Input current
- 1
- IOLK1 Output leakage current
- 0.1
Specifications & documentation
Use the official manufacturer documentation to verify electrical characteristics, package dimensions and operating limits before design approval.
Frequently asked questions
Common pre-quotation questions and selection notes to help you verify key parameters and sourcing before requesting a quote.
How do I verify the part is genuine / avoid counterfeit?
Buy only from authorized or franchised channels. On receipt, check: (1) laser-etched markings that solvent will not remove; (2) batch / lot code consistent between label and device; (3) original reel or tube packaging; (4) request traceability documents (CoC, date code). For critical parts, third-party X-ray / decapsulation testing is recommended.
How do I read the markings / date code on a chip?
Most active ICs use a 4-digit date code YYWW (year + week, e.g. 2345 = 2023 week 45). The top mark is manufacturer logo + base part number + lot code. For SMD code lookup, search by "marking code + package" on AllDataSheet / Octopart / LCSC.
What does the package code mean (TO-220, SOT-23, QFP…)?
Package codes describe the physical form factor and pin layout — critical when sourcing, because electrically equivalent parts in different packages will not fit the PCB. Common: TO-220 (3-terminal power), SOT-23 (3-pin small signal), DIP / SOIC (through-hole / SMD ICs), QFP / QFN (MCUs, processors).
What if my original model is discontinued (EOL / NRND)?
Three options: (1) the manufacturer’s recommended replacement; (2) franchised distributor legacy stock; (3) a functionally compatible cross-brand part — provided pinout and key parameters match. Always evaluate on a real board before mass swap.
What is the minimum order quantity (MOQ) and lead time?
We support both sample and volume orders. Minimum order quantity, stock availability and lead time are confirmed per inquiry — tell us your model and quantity and we will quote. Sample quantities for design validation are supported.
Can I get the datasheet and samples?
The full datasheet is linked on this page. For parts without a direct datasheet, we can locate the manufacturer document on request. Sample requests are supported — contact us with your model and quantity.
Request confirmation of current stock, date code, packaging, price and delivery terms. Product information does not constitute a binding offer; final specifications are confirmed with your quotation.