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A5947GETTR-T

Public Made by Adom

by adom

Allegro MicroSystems, LLC Pre-ordered Products, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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A5947GETTR-T

Allegro MicroSystems, LLC · Pre-ordered Products · QFN-28-EP(5x5)

A5947GETTR-T from Allegro MicroSystems, LLC, in a QFN-28-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 OUTA output Motor terminal A, with absolute maximum output voltage of VBB + 1 V.
2 n/c unconnected No connect.
3 LSS passive Low side source connection.
4 n/c unconnected No connect.
5 OUTB output Motor terminal B, with absolute maximum output voltage of VBB + 1 V.
6 OUTC output Motor terminal C, with absolute maximum output voltage of VBB + 1 V.
7 n/c unconnected No connect.
8 n/c unconnected No connect.
9 n/c unconnected No connect.
10 n/c unconnected No connect.
11 n/c unconnected No connect.
12 VREF power_out Reference voltage output of 3.3 V typical (3.15 to 3.45 V) for loads of 0 to 20 mA.
13 n/c unconnected No connect.
14 TEST output Open-drain logic output that is low when the motor is off and high at the end of open loop startup.
15 nFAULT output Active-low logic output that signals VBB undervoltage, VBB overvoltage, thermal shutdown, VCP undervoltage, rotor lock and output VDS (OCP) faults.
16 n/c unconnected No connect.
17 SPD input Speed demand input (PWM duty or analog voltage), which also serves as the I2C clock line SCL; absolute maximum -0.3 to 6 V.
18 FG bidirectional Open-drain speed output that also serves as the I2C data line SDA; absolute maximum -0.3 to 6 V.
19 GND power_in Ground.
20 n/c unconnected No connect.
21 n/c unconnected No connect.
22 n/c unconnected No connect.
23 CP1 passive Charge pump capacitor connection (0.1 µF X7R in the typical application).
24 CP2 passive Charge pump capacitor connection.
25 VCP passive Charge pump capacitor/output node, rated VBB - 0.3 to VBB + 8 V.
26 VBB power_in Input supply, operating 4 to 40 V with absolute maximum of -0.7 to 40 V.
27 n/c unconnected No connect.
28 n/c unconnected No connect.
29 PAD passive Exposed pad for enhanced thermal dissipation.

Key specifications

Parameter Value
Manufacturer Allegro MicroSystems, LLC
Package QFN-28-EP(5x5)
Category Solders / Accessories / Batteries
Pins 29

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper 28-contact QFN (package ET), on 2-sided PCB 1-in.2 copper 40 °C/W 2

CAD (KiCad official)

  • Symbol: A5947GETTR-T
  • Footprint: Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm
  • 3D model: QFN-28-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: a5947gettr-t-etched.step / a5947gettr-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); a5947gettr-t.step / a5947gettr-t.glb are the bare package body.

Provenance

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

  • Datasheet: Allegro MicroSystems, LLC datasheet (22 pp, sha256 b87bfe434c54d3c2, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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