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MS35774

Public Made by Adom

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Hangzhou Ruimeng Tech Motor Driver ICs, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MS35774

Hangzhou Ruimeng Tech · Motor Driver ICs · QFN-28-EP(5x5)

MS35774 from Hangzhou Ruimeng Tech, 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 BOUT2 bidirectional Motor coil B output 2.
2 ENN input Enable input; high level turns the outputs off, low turns the output drivers on.
3 GND power_in Ground.
4 CPO bidirectional Charge pump capacitor output.
5 CPI bidirectional Charge pump capacitor input, connect a 22nF (50V) capacitor to CPO.
6 VCP bidirectional Charge pump voltage, connect a 100nF capacitor to VM.
7 NC unconnected Not used; may be left floating or connected to ground.
8 V5 bidirectional Internal 5V LDO, connect a 2.2uF to 4.7uF capacitor to ground.
9 MS1 input Microstep configuration input with internal pull-down resistor (160kΩ).
10 MS2 input Microstep configuration input with internal pull-down resistor (160kΩ).
11 FAULT output Internal fault signal output; high means output drivers are off, reset by setting ENN high.
12 FG0 output Outputs a pulse at the positive-going zero crossing of coil A current.
13 CLK input Clock input; connect to ground when using the internal clock (external clock 4 to 18MHz).
14 PDN bidirectional Power-down not controlled by input; low level enables automatic standstill current reduction mode.
15 VIO power_in Supply for the digital I/O pins, 1.8V to 5V.
16 STEP input Microstep step input.
17 VREF power_in Analog reference voltage input for current control, or analog reference current input in internal sense resistor mode.
18 GND power_in Ground.
19 DIR input Direction input with internal pull-down resistor.
20 NC unconnected Not used; may be left floating or connected to ground.
21 AOUT2 bidirectional Motor coil A output 2.
22 VM power_in Motor supply voltage.
23 SENA bidirectional Coil A low-side MOS source; connect sense resistor to ground, or connect directly to ground in internal sense resistor mode.
24 AOUT1 bidirectional Motor coil A output 1.
25 NC unconnected Not used; may be left floating or connected to ground.
26 BOUT1 bidirectional Motor coil B output 1.
27 SENB bidirectional Coil B low-side MOS source; connect sense resistor to ground, or connect directly to ground in internal sense resistor mode.
28 VM power_in Motor supply voltage.
29 PAD passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Hangzhou Ruimeng Tech
Package QFN-28-EP(5x5)
Category Power Supply Chip
Pins 29

CAD (KiCad official)

  • Symbol: MS35774
  • 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: ms35774-etched.step / ms35774-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ms35774.step / ms35774.glb are the bare package body.

Provenance

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

  • Datasheet: Hangzhou Ruimeng Tech datasheet (14 pp, sha256 72e08b247865fd76, retrieved 2026-10-22, 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-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