The A4979 is a microstepping programmable stepper motor driver designed for bipolar stepper motors up to 1.5 A and 50 V, featuring stall detection, short circuit protection, and synchronous rectification for low power dissipation. It is supplied in a 28-pin TSSOP package with an exposed thermal pad, measuring 4.4 mm × 9.7 mm with a nominal height of 1.2 mm. The device supports Step and Direction control or SPI-compatible serial interface programming, and includes thermal warning, undervoltage lockout, and crossover-current protection. The ambient operating temperature range is -40 to 105 °C, with a maximum junction temperature of 150 °C.
The A4979 is a highly configurable stepper motor driver with integrated microstepping, stall detection, and short circuit protection.
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Stepper Motor Driver IC, 50V, 1.5A, TSSOP-28, SPI Product overview: A4979GLPTR-T from Allegro MicroSystems is a Motor Driver IC for embedded motor control, robotics, automation equipment, haptic feedback, pumps, fans, and industrial motion systems. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include Stepper, 50V, 1.5A, TSSOP. Search-friendly keywords include motor driver IC, H-bridge, stepper motor, PWM control, motion control, Stepper, 50V, 1.5A, TSSOP, Motor Drivers, Controllers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 744-A4979GLPTR-T can be used for catalog matching and distributor lookup.
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| Allegro MicroSystems Inc. | ERSAELECTRONICS PTE. LTD. | DigiKey | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|
| Product Category | Stepper Motor Drives | DC Motor Drives | DC Motor Drives | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A4979GLPTR-T | 744-A4979GLPTR-T | 620-1463-6-ND | A4979GLPTR-T | A4979GLPTR-T | A4979GLPTR-T |
| Product Name | Programmable Bipolar Stepper Driver | Stepper 50V 1.5A TSSOP Motor Driver IC | Motor Drivers, Controllers | Motor Drivers, Controllers | Integrated Circuits (ICs) - Power Management (PMIC) - Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers |
| Motor / System | Bipolar | |||||
| Configuration | PCB Mount | PCB Mount; "28-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | ||||
| PC-Based Bus | SPI | |||||
| Operating Temperature | -40 C (-40 F) | -40 to 150 C (-40 to 302 F) | -40 to 150 C (-40 to 302 F) | |||
| DC Input | 50 volts | 3 to 6 volts |
