BD63521EFV-E2

Overview

The BD63521EFV-E2 is a micro-stepping stepper motor driver designed for high-precision motion control applications. It supports CLK-IN drive mode and offers step resolutions of Full, Half, Quarter, and Sixteenth steps via an internal DAC. The device features a rated output current of 2.0A DC with a peak capability of 2.5A, operating within a power supply voltage range of 8V to 28V and a maximum Vcc of 36V. It utilizes a single power supply input and employs PWM constant current control. Key electrical parameters include a typical output on-resistance of 0.65Ω. The component operates across a temperature range of -25°C to +85°C and is housed in a HTSSOP-B28 package.

Feature Summary

• Supports Full, Half, Quarter, and Sixteenth step modes through built-in digital-to-analog conversion.
• Features linearly variable FAST/SLOW decay ratio switching for optimized motor control.
• Integrates comprehensive protection circuits including thermal shutdown, over-current, under-voltage lockout, and over-voltage lockout.
• Includes logic input pull-down resistors and a power-on reset function for stable operation.

Applications

• Precision positioning systems requiring smooth micro-stepping motion
• Automated machinery utilizing bipolar stepper motors
• Industrial equipment needing reliable motor control with noise cancellation

Procurement Notes

Verify the specific ordering suffix E2 against the manufacturer's latest documentation to ensure compliance with current RoHS standards and packaging configurations. Confirm that the HTSSOP-B28 package dimensions align with your PCB layout requirements. Check for any regional distribution restrictions or lead time variations associated with this specific part number before finalizing procurement plans.

Selection Notes

Select this component when a single power supply solution is required for driving bipolar stepper motors up to 2.0A. It is suitable for designs needing flexible step resolution from full to sixteenth steps without external oscillation components. Consider its integrated spike noise cancel function if external filtering is undesirable. Ensure the application environment stays within the specified -25°C to +85°C operating temperature range.

Part Context

This part belongs to ROHM Semiconductor's series of micro-stepping stepper motor drivers. It is characterized by its ability to handle 36V耐压 ratings while maintaining low power consumption. The BD63521EFV-E2 is distinct from automotive-grade variants as it is not recommended for vehicle-mounted equipment. It serves as a standard-level driver for general-purpose motion control tasks.

Replacement Considerations

Consult official substitution lists for direct replacements. Generic equivalents may lack the specific CLK-IN interface or internal DAC micro-stepping capabilities. Verify pin compatibility and thermal performance if considering alternative manufacturers.

FAQ

Does the BD63521EFV-E2 require an external oscillator?

No, the device supports CLK-IN drive mode and does not require an external oscillation circuit for basic operation.

What is the maximum voltage rating for the Vcc pin?

The maximum voltage rating for Vcc is 36V, although the recommended power supply voltage range is 8V to 28V.