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TLC6946RGER

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Texas Instruments LED Drivers, VQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TLC6946RGER

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlc6946rger.step / tlc6946rger.glb are 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, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF