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TLC6946RGER
Public Made by Adomby adom
Texas Instruments LED Drivers, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTLC6946RGER
Texas Instruments · LED Drivers · VQFN-24-EP(4x4)
TLC6946RGER from Texas Instruments, in a VQFN-24-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | LAT | input | Data latch input; the falling edge of LAT latches data from the common shift register into the GS data memory or the function control register. |
| 2 | OUT0 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 3 | OUT1 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 4 | OUT2 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 5 | OUT3 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 6 | OUT4 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 7 | OUT5 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 8 | OUT6 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 9 | OUT7 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 10 | GND | power_in | Power-ground reference; must be connected together with the thermal pad on the board. |
| 11 | OUT8 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 12 | OUT9 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 13 | OUT10 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 14 | OUT11 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 15 | OUT12 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 16 | OUT13 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 17 | OUT14 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 18 | OUT15 | output | Constant-current output (0.3 mA to 25 mA); can be tied together with other outputs to increase current, and a different voltage can be applied to each output. |
| 19 | SOUT | output | Serial data output of the internal 16-bit common shift register; the MSB of the shift register appears on SOUT. |
| 20 | GCLK | input | Grayscale PWM reference clock input (max 33 MHz, 25 MHz in dual-edge operation); each rising edge increments the GS counter in default mode, and dual-edge operation is supported. |
| 21 | IREF | input | Sets the maximum constant-current value via an external resistor to GND placed close to the device; connecting it directly to GND forces all outputs off. |
| 22 | VCC | power_in | Power supply pin, 3 V to 5.5 V recommended operating range. |
| 23 | SIN | input | Serial data input of the internal 16-bit common shift register; the LSB is set to the SIN level on each SCLK rising edge. |
| 24 | SCLK | input | Serial clock input (max 33 MHz); SIN data is shifted into the LSB of the 16-bit common shift register on each rising edge, shifting existing data toward the MSB. |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-24-EP(4x4) |
| Category | LED Drivers |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
TLC6946RGER - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm - 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
tlc6946rger-etched.step/tlc6946rger-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tlc6946rger.step/tlc6946rger.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (35 pp, sha256
e4d3df4565501ba1, retrieved 2026-10-07, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).