The A3985 is a digitally programmable dual full-bridge MOSFET driver for controlling two-phase stepper or brushless DC motors, with external N-channel power MOSFETs operating from 12 to 50 V. It is supplied in a 38-pin TSSOP package with 100% matte tin leadframe plating. The device features serial interface control for programmable PWM current regulation, mixed decay modes, synchronous rectification, cross-conduction protection, and adjustable dead time. Integrated protection includes thermal shutdown with hysteresis and undervoltage lockout. Operating ambient temperature range is -20 to 85 °C, with a maximum junction temperature of 150 °C.
The A3985 offers a highly configurable solution for driving stepper and BLDC motors, featuring dual full-bridge gate drive, programmable PWM control, synchronous rectification, and integrated protection.
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8-Ch Gate Driver, 50V, SPI, 120ns Delay, TSSOP Product overview: A3985SLDTR-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 50V, TSSOP. Search-friendly keywords include motor driver IC, H-bridge, stepper motor, PWM control, motion control, 50V, TSSOP, Motor Drivers, Controllers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 744-A3985SLDTR-T can be used for catalog matching and distributor lookup.
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| Allegro MicroSystems Inc. | ERSAELECTRONICS PTE. LTD. | DigiKey | Lingto Electronic Limited | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|
| Product Category | Stepper Motor Drives | DC Motor Drives | Motor Controllers | Motor Controllers | Motor Controllers | Motor Controllers |
| Product Number | A3985SLDTR-T | 744-A3985SLDTR-T | 620-1180-6-ND | A3985SLDTR-T | A3985SLDTR-T | A3985SLDTR-T |
| Product Name | Digitally Prog Dual H-Bridge Mosfet Driver | 50V TSSOP Motor Driver IC | Motor Drivers, Controllers | PMIC - Motor Drivers, Controllers | Motor Drivers, Controllers | Integrated Circuits (ICs) - Power Management (PMIC) - Motor Drivers, Controllers |
| Configuration | PCB Mount | PCB Mount; "38-TFSOP (0.173"", 4.40mm Width)" | ||||
| PC-Based Bus | SPI | |||||
| Operating Temperature | -20 C (-4 F) | -20 to 85 C (-4 to 185 F) | -20 to 85 C (-4 to 185 F) | |||
| DC Input | 50 volts | 12 to 50 volts |
