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TLC5943RHBR

Public Made by Adom

by adom

Texas Instruments LED Drivers, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TLC5943RHBR

Texas Instruments · LED Drivers · VQFN-32-EP(5x5)

TLC5943RHBR from Texas Instruments, in a VQFN-32-EP(5x5). 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 SCLK input Serial data shift clock for grayscale and brightness shift registers; Schmitt buffer input; data present on SIN are shifted into selected shift register with rising edge of SCLK.
2 SIN input Serial data input for grayscale and brightness control data; Schmitt buffer input.
3 BCSEL input Shift register and data latch select; Schmitt buffer input; low selects Grayscale register, high selects Brightness Control register; do not change while SCLK is high.
4 OUT0 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
5 OUT1 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
6 OUT2 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
7 OUT3 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
8 OUT4 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
9 OUT5 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
10 OUT6 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
11 OUT7 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
12 NC unconnected No internal connection.
13 NC unconnected No internal connection.
14 OUT8 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
15 OUT9 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
16 OUT10 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
17 OUT11 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
18 OUT12 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
19 OUT13 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
20 OUT14 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
21 OUT15 output Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control.
22 XERR output Error output; open-drain output that goes low when LED Open Detection (LOD) or Thermal Error Flag (TEF) is detected.
23 SOUT output Serial data output connected to Grayscale/Status Information shift register or Brightness Control shift register selected by BCSEL.
24 GSCLK input Reference clock for Grayscale PWM control; Schmitt buffer input; 33 MHz maximum; each rising edge increments grayscale counter when BLANK is low.
25 XTEST input Factory test pin; must be connected to VCC or GND.
26 IREF input Reference current setting; connect external resistor between IREF and GND to set OUT0-OUT15 sink current value.
27 VCC power_in Power-supply voltage; operating range 3.0 V to 5.5 V.
28 NC unconnected No internal connection.
29 NC unconnected No internal connection.
30 GND power_in Power ground.
31 BLANK input Blank control (all constant current outputs off); Schmitt buffer input; high forces all outputs OFF and resets grayscale counter to 0.
32 XLAT input Latch control; low-to-high transition moves data from Grayscale and Brightness shift registers to respective first data latches.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-32-EP(5x5)
Category Nixie Tube Driver/LED Driver
Pins 33

CAD (KiCad official)

  • Symbol: TLC5943RHBR
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: VQFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: tlc5943rhbr-etched.step / tlc5943rhbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlc5943rhbr.step / tlc5943rhbr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (43 pp, sha256 7fde582ec49e3d08, retrieved 2026-10-07, 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