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TLC5971PWPR

Public Made by Adom

by adom

Texas Instruments LED Drivers, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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TLC5971PWPR

Texas Instruments · LED Drivers · HTSSOP-20-EP

TLC5971PWPR from Texas Instruments, in a HTSSOP-20-EP. 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 IREF input Maximum current programming terminal; external resistor between IREF and GND sets maximum output current (60 mA max), or direct connection to GND forces all outputs off.
2 GND power_in Power ground terminal with exposed thermal PowerPAD on bottom side of package.
3 OUTR0 output RED constant-current sink output channel 0; 60 mA maximum per channel.
4 OUTG0 output GREEN constant-current sink output channel 0; 60 mA maximum per channel.
5 OUTB0 output BLUE constant-current sink output channel 0; 60 mA maximum per channel.
6 OUTR1 output RED constant-current sink output channel 1; 60 mA maximum per channel.
7 OUTG1 output GREEN constant-current sink output channel 1; 60 mA maximum per channel.
8 OUTB1 output BLUE constant-current sink output channel 1; 60 mA maximum per channel.
9 SDTI input Serial data input for 224-bit shift register; data shifted to LSB on SCKI rising edge.
10 SCKI input Serial data shift clock input; maximum frequency 20 MHz; controls shifting of data toward MSB in shift register.
11 SCKO output Serial data shift clock output; input SCKI signal adjusted to timing of SDTO and output at SCKO.
12 SDTO output Serial data output of 224-bit shift register; connected to MSB and clocked out on SCKI rising edge.
13 OUTR2 output RED constant-current sink output channel 2; 60 mA maximum per channel.
14 OUTG2 output GREEN constant-current sink output channel 2; 60 mA maximum per channel.
15 OUTB2 output BLUE constant-current sink output channel 2; 60 mA maximum per channel.
16 OUTR3 output RED constant-current sink output channel 3; 60 mA maximum per channel.
17 OUTG3 output GREEN constant-current sink output channel 3; 60 mA maximum per channel.
18 OUTB3 output BLUE constant-current sink output channel 3; 60 mA maximum per channel.
19 VCC power_in Power-supply input terminal; operating range 6 V to 17 V with internal regulator or 3 V to 5.5 V when VREG supplied externally.
20 VREG power_out Internal linear voltage regulator output providing 3.3 V nominal; requires 1 µF minimum decoupling capacitor; can supply external devices or accept external 3 V to 5.5 V supply.
21 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package HTSSOP-20-EP
Category Nixie Tube Driver/LED Driver
Pins 21

CAD (KiCad official)

  • Symbol: TLC5971PWPR
  • Footprint: Package_SO:TSSOP-20-1EP_4.4x6.5mm_P0.65mm_EP2.15x3.35mm
  • 3D model: HTSSOP-20-EP, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.2 mm nominal TSSOP height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: tlc5971pwpr-etched.step / tlc5971pwpr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlc5971pwpr.step / tlc5971pwpr.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 2026-10-01, tier: lcsc)
  • 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