A3983SLP Equivalent & Substitute Parts

Part Overview

The A3983SLP is a bipolar stepper motor driver IC manufactured by Allegro MicroSystems, designed for fully integrated motor control and power stage applications. This device operates across a supply voltage range of 3V to 5.5V and supports load voltages from 8V to 35V, delivering 2A output current with configurable step resolution from full step to 1/8 microstepping. The A3983SLP is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

A3983SLP

Allegro MicroSystemsIn Stock: 2968A3983SLP Datasheet

Current PartRFQ

TB6560AHQ,8

Toshiba Semiconductor and StorageIn Stock: 1000362TB6560AHQ,8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A3983SLP is determined by the following critical parameters:

• Motor Control Architecture: Bipolar stepper motor driver with fully integrated control and power stage
• Output Configuration: Half Bridge (4) topology for dual-channel motor control
• Step Resolution Capability: Minimum support for 1, 1/2, 1/4, 1/8 microstepping modes
• Output Current Rating: Minimum 2A per channel
• Supply Voltage Range: Compatibility with 3V to 5.5V logic supply
• Load Voltage Range: Support for 8V to 35V motor supply
• Thermal Operating Range: Functional operation across -20°C to 150°C

The TB6560AHQ,8 qualifies as a functional equivalent based on these core parameters, though with specific operational constraints noted in the parameter comparison.

Parameter Comparison

Engineering Selection Recommendations

The TB6560AHQ,8 serves as a functional substitute for the obsolete A3983SLP in bipolar stepper motor driver applications. Selection of this alternative requires evaluation of the following factors:

Supply Voltage Constraint: The TB6560AHQ,8 minimum supply voltage is 4.5V, compared to 3V for the A3983SLP. Systems operating at supply voltages below 4.5V cannot use this substitute without additional voltage regulation.

Thermal Operating Range: The A3983SLP supports junction temperatures to 150°C, while the TB6560AHQ,8 is rated to 85°C ambient. Applications requiring operation above 85°C ambient or with high thermal dissipation require thermal analysis to confirm compatibility.

Package and Mounting: The A3983SLP uses surface mount 24-TSSOP-EP packaging, while the TB6560AHQ,8 uses through-hole 25-HZIP packaging. PCB redesign is required for mechanical and electrical integration.

Interface Architecture: The A3983SLP uses logic-level interface control, while the TB6560AHQ,8 uses parallel interface. Control signal routing and microcontroller interface requirements differ between these architectures.

Compliance Status: The TB6560AHQ,8 is ROHS3 compliant and actively manufactured, providing supply chain continuity and regulatory compliance advantages over the obsolete, non-compliant A3983SLP.

Frequently Asked Questions (FAQ)

Q: Can the TB6560AHQ,8 directly replace the A3983SLP without PCB modifications?

A: No. The TB6560AHQ,8 uses a different package (25-HZIP through-hole versus 24-TSSOP-EP surface mount), different pin count, and different interface architecture (parallel versus logic). PCB redesign is required.

Q: What is the minimum supply voltage requirement for the TB6560AHQ,8?

A: The TB6560AHQ,8 requires a minimum supply voltage of 4.5V. The A3983SLP operates from 3V. Systems designed for 3V to 4.4V supply cannot use the TB6560AHQ,8 without additional voltage regulation.

Q: Does the TB6560AHQ,8 support the same microstepping resolutions as the A3983SLP?

A: The TB6560AHQ,8 supports 1, 1/2, 1/4, 1/8, and 1/16 step resolutions, exceeding the A3983SLP capability of 1, 1/2, 1/4, and 1/8. All A3983SLP resolution modes are supported by the TB6560AHQ,8.

Q: What are the output current differences between these devices?

A: The A3983SLP provides 2A output current per channel, while the TB6560AHQ,8 provides 3A. The TB6560AHQ,8 supports higher motor current requirements.

Q: Are there temperature operating range limitations with the TB6560AHQ,8?

A: The TB6560AHQ,8 operates from -30°C to 85°C ambient temperature, compared to the A3983SLP range of -20°C to 150°C junction temperature. Applications requiring sustained operation above 85°C ambient require thermal analysis and may not be suitable for the TB6560AHQ,8.

Q: What compliance advantages does the TB6560AHQ,8 provide?

A: The TB6560AHQ,8 is ROHS3 compliant and actively manufactured by Toshiba Semiconductor and Storage. The A3983SLP is obsolete and RoHS non-compliant, creating supply chain and regulatory compliance risks.