Brush DC Motor Drivers

Allegro ICs for half- and full-bridge drives (brush motor, dc motor driver, dc brushed motor, brush dc motor)Brush DC motors are the most widely used drivers due to their low cost and simple drive control options. Typical brush DC motors consist of a rotating electromagnet surrounded by a permanent magnet. Rotational torque is produced by the interaction of the magnetic fields and continuous rotation is produced by changing the polarity of the rotating coil with a mechanical commutator and brushes.

Typical brush DC motor drivers consist of a half bridge for single direction operation and an H-bridge configuration for bidirectional control.  PWM (Pulse Width Modulation) control can be used to regulate motor speed, torque, or position.

Allegro offers a complete lineup of DC motor drivers for all markets, including office automation, automotive and industrial. Depending on the needs of a given application,  Allegro IC solutions can include features such as:

  • PWM control
  • Internal DMOS outputs or gate controllers to drive external MOSFETs
  • Forward, Reverse, Coast and Brake modes
  • Slow, Fast and Mixed PWM decay modes
  • Commercial grade and fully automotive qualified drivers
  • Synchronous rectification
  • Diagnostic outputs
  • Protection features: Under-voltage lockout, thermal shutdown, shoot through, overvoltage, over-current protection
  • Package options include exposed pad QFN, TSSOP, SOIC and DIP packages all lead (Pb) free

See below for our offerings of Brush DC Motor Drivers, DC Motor Controllers and Brush Motor ICs

Low-Voltage Motor Drivers (Integrated MOSFET ICs)
 Part
Number
 Ouput Voltage Range (V)  Output Current Range  Number of Bridges  Logic Supply Voltage Range Packages
A3909 4 to 18 1 A Dual full Internally generated SSOP-10,
MSOP-10
A3906 2.5 to 9 1 A Dual full Internally generated QFN-20
New as of October 2016
A3916

2.7 to 15 1 A Dual full Internally generated
QFN-16, QFN-20
A3918 2.5 to 9 1 A Single full Internally generated QFN-16
A3901 2.5 to 5.5 400 mA Dual full Internally generated DFN-10
A3903 2.5 to 5.5 500 mA Single full Internally generated DFN-8
A3908 2.5 to 5.5 500 mA Single full Internally generated DFN-8
A3910 2.5 to 5.5 500 mA Dual half Internally generated DFN-8
MOSFET Gate Driver ICs
 Part
Number
 Ouput Voltage Range (V)  Output Current Range  Number of Bridges  Logic Supply Voltage Range Packages
A3946K 7 to 60 >10 A Typical Half bridge Internally generated eTSSOP-16
A3921K 7 to 50 >10 A Typical Single full Internally generated eTSSOP-28
A3922K
5.5 to 50 >10 A Typical
Single full
Internally generated
eTSSOP-28
A3924K
5.5 to 50 >10 A Typical Single full
Internally generated eTSSOP-38
A3941K 7 to 50 >10 A Typical Single full Internally generated eTSSOP-28
A4940K 5.5 to 50 >10 A Typical Single full 3 V to 5.5 V eTSSOP-24
A4957 4.5 to 50 >10 A Typical Single full 3 V to 5.5 V QFN-16
A4955 5.5 to 50 <20 A Typical Single full Internally generated eTSSOP-20, QFN-20
A4956 5.5 to 50 <20 A Typical Single full Internally generated eTSSOP-20, QFN-20
A5957 5.5 to 50 <20 A Typical Single full Internally generated QFN-20
A5929K 5.5 to 50 >10 A Typical Single full Internally generated eTSSOP-24
Integrated MOSFET ICs
 Part
Number
 Ouput Voltage Range (V)  Output Current Range  Number of Bridges  Logic Supply Voltage Range Packages
A3959 9.5 to 50 3 A Single full 4.5 V to 5.5 V DIP-24, SOIC-24, eTSSOP-28
A4973 5 to 50 1.5 A Single full 3 V to 5.5 V DIP-16, SOIC-16
A4950 /
A4950K
8 to 40 3.5 A Single full Internally generated SOICN-8
A4952 8 to 40 2 A Single full Internally generated MSOP-10
A4953 8 to 40 2 A Single full Internally generated SOICN-8
A4954 8 to 40 2 A Dual full Internally generated eTSSOP-16
A3949 8 to 36 2.8 A Single full Internally generated SOIC-16, eTSSOP-16
A3950 8 to 36 2.8 A Single full Internally generated eTSSOP-16, QFN-16
A3968 Vcc to 30 650 mA Dual full 4.75 V to 5.5 V SOIC-16
New
A5950 /
A5950K
5.5 to 40 3.0 A Single full Internally generated
 QFN-16
eTSSOP-16
A5989
8 to 40  1.6 A (Step), 3.2 A (DC) Three Full Internally generated QFN-36
New
A5995
8 to 40
 3.2A Dual full
Internally generated
QFN-36
A3998 9 to 50 1.5 A Dual full with dual regulators 3 V to 5.5 V QFN-32

 

Note: "K" suffix denotes automotive grade product (AEC-Q100 qualified).



Internally generated
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