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MD9927
Public Made by Adomby adom
Shanghai Mingda Microelectronics Motor Driver ICs, WDFN-8-EP(2x2). 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
markdownMD9927
Shanghai Mingda Microelectronics · Motor Driver ICs · WDFN-8-EP(2x2)
MD9927 from Shanghai Mingda Microelectronics, in a WDFN-8-EP(2x2). 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 | VM | power_in | Motor power supply, 0 to 12 V recommended, to be bypassed to GND with a 0.1 µF ceramic capacitor rated for VM. |
| 2 | OUT1 | output | Motor output that connects to the motor winding. |
| 3 | OUT2 | output | Motor output that connects to the motor winding. |
| 4 | GND | power_in | Device ground, which must be connected to ground. |
| 5 | IN2 | input | IN2 logic input controlling OUT2 (PWM interface), with an internal pulldown of about 100 kΩ. |
| 6 | IN1 | input | IN1 logic input controlling OUT1 (PWM interface), with an internal pulldown of about 100 kΩ. |
| 7 | nSLEEP | input | Sleep mode input: logic low puts the device in low-power sleep mode, logic high gives normal operation, with an internal pulldown. |
| 8 | VCC | power_in | Logic power supply, 1.8 to 7 V, to be bypassed to GND with a 0.1 µF ceramic capacitor rated for VCC. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | WDFN-8-EP(2x2) |
| Category | Power Management ICs |
| Pins | 9 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Motor power-supply voltage | VM | -0.3 | 18 | V | Ta=25°C | 2 | |
| Logic power-supply voltage | VCC | -0.3 | 7 | V | Ta=25°C | 2 | |
| Control pin voltage IN1, IN2, nSLEEP | -0.3 | 7 | V | Ta=25°C | 2 | ||
| ESD HBM | V(ESD) | -4000 | 4000 | V | Human body model | 2 | |
| Operating virtual junction temperature | TJ | -40 | 150 | °C | 2 | ||
| Storage temperature | Tstg | -60 | 150 | °C | 2 | ||
| Motor power-supply voltage | VM | 0 | 12 | V | Ta=25°C | 2 | |
| Logic power-supply voltage | VCC | 1.8 | 7 | V | Ta=25°C | 2 | |
| Logic level input voltage | VLOGIC | 0 | 5.5 | V | Ta=25°C | 2 | |
| Motor peak current | IOUT | 0 | 1.8 | A | Ta=25°C | 2 | |
| Externally applied PWM frequency | fPWM | 0 | 250 | kHz | Ta=25°C | 2 | |
| Operating ambient temperature | TA | -40 | 85 | °C | 2 | ||
| VM operating voltage | VM | 0 | 12 | V | 3 | ||
| VM operating supply current | IVM | 30 | 100 | µA | VM = 5 V; VCC = 3 V; No PWM | 3 | |
| VM operating supply current | IVM | 0.45 | 1.5 | mA | VM = 5 V; VCC = 3 V; 50 kHz PWM | 3 | |
| VM sleep mode supply current | IVMQ | 30 | 90 | nA | VM = 5 V; VCC = 3 V; nSLEEP = 0 | 3 | |
| VCC operating voltage | VCC | 1.8 | 7 | V | 3 | ||
| VCC operating supply current | IVCC | 0.23 | 0.5 | mA | VM = 5 V; VCC = 3 V; No PWM | 3 | |
| VCC operating supply current | IVCC | 0.45 | 1.5 | mA | VM = 5 V; VCC = 3 V; 50 kHz PWM | 3 | |
| VCC sleep mode supply current | IVCCQ | 15 | 30 | nA | VM = 5 V; VCC = 3 V; nSLEEP = 0 | 3 | |
| Input logic-low voltage falling threshold | VIL | 0.25 | 0.38 | V | values are multiples of VCC (0.25 × VCC, 0.38 × VCC) | 3 | |
| Input logic-high voltage rising threshold | VIH | 0.46 | 0.5 | V | values are multiples of VCC (0.46 × VCC, 0.5 × VCC) | 3 | |
| Input logic low current | IIL | -5 | 5 | µA | VIN = 0 V | 3 | |
| Input logic high current, IN1 or IN2 | IIH | 60 | µA | VIN = 3.3 V, IN1 or IN2 pin | 3 | ||
| Input logic high current, nSLEEP | IIH | 50 | µA | VIN = 3.3 V, nSLEEP pin | 3 | ||
| Off-state leakage current | -200 | 200 | nA | VOUT = 0 V | 3 | ||
| HS + LS FET on-resistance | 500 | mΩ | VM = 5 V; VCC = 3 V; IO = 800 mA; TJ = 25°C | 3 | |||
| Overcurrent protection trip level | IOCP | 1.9 | 3.5 | A | 3 | ||
| VCC undervoltage lockout, falling | VUVLO | 1.7 | V | VCC falling | 3 | ||
| VCC undervoltage lockout, rising | VUVLO | 1.8 | V | VCC rising | 3 | ||
| Input logic hysteresis | VHYS | 0.08 | V | 0.08 × VCC | 3 | ||
| Pulldown resistance | RPD | 100 | kΩ | 3 | |||
| Overcurrent deglitch time | tDEG | 1 | µs | 3 | |||
| Overcurrent retry time | TRETRY | 1 | ms | 3 | |||
| Thermal shutdown temperature | tTSD | 170 | °C | Die temperature TJ | 3 | ||
| Output enable time | t1 | 300 | ns | 4 | |||
| Output disable time | t2 | 300 | ns | 4 | |||
| Delay time, INx high to OUTx high | t3 | 160 | ns | 4 | |||
| Delay time, INx low to OUTx low | t4 | 160 | ns | 4 | |||
| Output rise time | t5 | 30 | 188 | ns | 4 | ||
| Output fall time | t6 | 30 | 188 | ns | 4 |
CAD (KiCad official)
- Symbol:
MD9927 - Footprint:
Package_DFN_QFN:WDFN-8-1EP_2x2mm_P0.5mm_EP0.8x1.2mm - 3D model: WDFN-8-EP(2x2), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.75 mm nominal WSON 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:
md9927-etched.step/md9927-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);md9927.step/md9927.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shanghai Mingda Microelectronics datasheet (11 pp, sha256
b265c99dba064782, retrieved 2026-10-22, tier: lcsc) - 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).