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AT4950-MS

Public Made by Adom

by adom

MSKSEMI Brushed DC Motor Drivers, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AT4950-MS

MSKSEMI · Brushed DC Motor Drivers · ESOP-8

AT4950-MS from MSKSEMI, in a ESOP-8. 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 GND power_in Logic ground, connect to board ground.
2 IN2 input Logic input controlling the H-bridge output, with 100 kΩ internal pulldown.
3 IN1 input Logic input controlling the H-bridge output, with 100 kΩ internal pulldown.
4 VREF power_in Analog reference input; apply a voltage between 0.3 V and 5 V.
5 VM power_in 6.5 V to 40 V power supply; connect a 0.1 µF bypass capacitor to ground plus sufficient bulk capacitance rated for the VM voltage.
6 OUT1 output H-bridge output; connect directly to the motor or other inductive load.
7 ISEN passive High-current ground path; connect to a low-value, high-power-rating resistor to ground for current regulation, or directly to ground if not used.
8 OUT2 output H-bridge output; connect directly to the motor or other inductive load.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package ESOP-8
Category Motor Driver 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
VM operating voltage VM 6.5 40 V 5
VM operating supply current IVM 2 10 mA VM = 24V 5
ISEN gain AV 9.4 10 10.4 V/V VREF = 2.5V 5
Input logic low current IIL -1 1 μA VIN = 0V 5
Time to sleep tsleep 1.2 2 ms Inputs low to sleep 5
High-side FET on resistance RDS(ON)_High 260 300 mΩ VM = 24 V, I = 1A, fPWM = 25 kHz 5
Low-side FET on resistance RDS(ON)_Low 260 300 mΩ VM = 24 V, I = 1A, fPWM = 25kHz 5
Input logic low voltage VIL 0.5 V 5
Input logic high voltage VIH 2 V 5
VM sleep current IVMSLEEP 15 µA VM = 24V 5
Turn-on time tON 45 µs VM > VUVLO with IN1 or IN2 high 5
Input logic hysteresis VHYS 0.2 V 5
Input logic high current IIH 33 μA VIN = 3.3V 5
Pulldown resistance RPD 100 kΩ to GND 5
Output dead time tDEAD 200 ns 5
PWM off-time tOFF 30 µs 5
PWM blanking time tBLANK 3.2 µs 5
VM undervoltage lockout falling VUVLO_fall 5.8 V VM falls until UVLO triggers 5
VM undervoltage lockout rising VUVLO_rise 6 V VM rises until operation recovers 5
VM undervoltage hysteresis VUV,_HYS 200 mV Rising to falling threshold 5
Overcurrent protection trip level IOCP 4.2 A 5
Overcurrent deglitch time tOCP 2.5 μs 5
Overcurrent retry time tRETRY 4 ms 5
Thermal shutdown temperature TSD 170 °C 6
Thermal shutdown hysteresis THYS 40 °C 6
Power supply voltage range VM 6.5 40 V 4
Operating junction temperature range TJ -40 125 °C 4
Power supply voltage (VM) VM -0.3 45 V 3
Logic input voltage (IN1, IN2) -0.3 6 V 3
Reference input pin voltage (VREF) -0.3 6 V 3
Continuous phase node pin voltage (OUT1, OUT2) -0.7 V max printed as VM+0.7 V 3
Current sense input pin voltage (ISEN) -0.5 1 V 3
Output current 0 3.5 A 100% duty cycle 3
Operating junction temperature TJ -40 150 °C 3
Storage temperature -65 150 °C 3
ESD Human Body Model VESD -2000 2000 V all pins, JEDEC JS-001 4
Junction thermal resistance 250 °C/W TJ = TA + PD x 250°C/W (Note 2) 6

CAD (KiCad official)

  • Symbol: AT4950-MS
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: at4950-ms-etched.step / at4950-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); at4950-ms.step / at4950-ms.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (11 pp, sha256 881c0e9304c87432, retrieved 2026-10-27, 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