The A5979 is a microstepping DMOS driver with an integrated translator for controlling bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes, with a 40 V output voltage rating and ±2.8 A output current capability. It operates from a 3 to 5.5 V logic supply and features mixed, fast, and slow current decay modes, synchronous rectification, and multiple protection functions including thermal shutdown and undervoltage lockout. The device is packaged in a 28-lead TSSOP with an exposed thermal pad and is designed for applications requiring simplified control without complex microprocessor interfaces.
The A5979 provides precise and efficient microstepping control for bipolar stepper motors, with an integrated translator for simplified control and selectable current decay modes for optimized performance. Supports up to 1/16-step resolution.
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Download Datasheet
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 1134722-A5979GLPTR-T
Packaging: Reel - TR
Operating Temperature Range: -40°C ~ 150°C (TJ)
Package: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
Applications: General
Mounting: SMD
Technology: DMOS
Operating Supply Voltage: 3 V ~ 5.5 V
Function: Driver - Fully Integrated, Control and Power Stage
Interface: Step/Direction
Output Configuration: Half Bridge (4)
Output Current: 2.8A
Voltage - Load: 8 V ~ 40 V
Motor Type - Stepper: Bipolar
Step Resolution: 1, 1/2, 1/4, 1/16
Family Name: A5979
Categories: Integrated Circuits (ICs)
Manufacturer Homepage: www.allegromicro.com
Manufacturer Package: 28-TSSOP-EP
Alternative Parts (Cross-Reference): SLA7044M-LF871; BA6849FP; SLA7042M;
Introduction Date: December 21, 2015
ECCN: EAR99
Popularity: Medium
Fake Threat In the Open Market: 48 pct.
Supply and Demand Status: Limited
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| Allegro MicroSystems Inc. | Win Source Electronics | DigiKey | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|---|
| Product Category | Stepper Motor Drives | Motion Controllers | DC Motor Drives | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A5979GLPTR-T | 1134722-A5979GLPTR-T | 620-1785-1-ND | A5979GLPTR-T | A5979GLPTR-T | A5979GLPTR-T |
| Product Name | Microstepping DMOS Driver W/Translator | PMIC - PMIC - Motor Drivers, Controllers - A5979GLPTR-T | Motor Drivers, Controllers | Integrated Circuits (ICs) - Power Management (PMIC) - Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers | Motor Drivers, Controllers |
| Motor / System | Microstepping Motor | |||||
| Configuration | PCB Mount | PCB Mount; "28-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | ||||
| Operating Temperature | -40 to 150 C (-40 to 302 F) | -40 to 150 C (-40 to 302 F) | -40 to 150 C (-40 to 302 F) | |||
| AC Input | 3 to 6 volts | 3 to 6 volts | ||||
| DC Input | 3 to 6 volts | 3 to 6 volts |
