component
MS35774
Public Made by Adomby adom
Hangzhou Ruimeng Tech Motor Driver ICs, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMS35774
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ms35774.step/ms35774.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).