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TLC5971RGER

Public Made by Adom

by adom

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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TLC5971RGER

Texas Instruments · LED Drivers · VQFN-24-EP(4x4)

TLC5971RGER 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 SDTI input Serial data input for the 224-bit shift register; data present on SDTI are shifted into the LSB on the SCKI rising edge.
2 SCKI input Serial data shift clock input; the shift register shifts toward the MSB on each SCKI rising edge, and the SCKI signal is used for the SDTO timing.
3 NC unconnected No internal connection.
4 NC unconnected No internal connection.
5 SCKO output Serial data shift clock output; the SCKI input clock is adjusted to the timing of the SDTO data and output on this pin.
6 SDTO output Serial data output connected to the MSB of the 224-bit shift register; data are clocked out on the SCKI rising edge.
7 OUTR2 output Red constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
8 OUTG2 output Green constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
9 OUTB2 output Blue constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
10 OUTR3 output Red constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
11 OUTG3 output Green constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
12 OUTB3 output Blue constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
13 VCC power_in Power-supply terminal: 6 V to 17 V when the internal regulator is used, or 3 V to 5.5 V when VCC and VREG are tied together for direct supply.
14 NC unconnected No internal connection.
15 VREG bidirectional Internal 3.3-V linear regulator output that requires a 1-µF decoupling capacitor and supplies up to 25 mA (-25 mA regulator output current); it can instead be supplied with 3 V to 5.5 V by connecting it to VCC.
16 IREF bidirectional Maximum-current programming terminal: a resistor between IREF and GND sets the maximum constant current for every output, and connecting IREF directly to GND forces all outputs off.
17 NC unconnected No internal connection.
18 GND power_in Power ground terminal, which is also the exposed thermal pad of the VQFN package.
19 OUTR0 output Red constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
20 OUTG0 output Green constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
21 OUTB0 output Blue constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
22 OUTR1 output Red constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
23 OUTG1 output Green constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
24 OUTB1 output Blue constant-current sink output (60 mA maximum constant current); outputs may be paralleled for more current and different voltages (up to 17 V) can be applied to each output.
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: TLC5971RGER
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm
  • 3D model: VQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: tlc5971rger-etched.step / tlc5971rger-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlc5971rger.step / tlc5971rger.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (47 pp, sha256 9314545e14dcae46, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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