BD63860EFV-E2

Overview

The BD63860EFV-E2 is a bipolar stepper motor driver from ROHM Semiconductor, designed for single power supply operation within a voltage range of 16 V to 28 V. It features a CLK-IN interface and supports full, half, quarter, and eighth step modes via an integrated 3-bit DAC. The device delivers a rated output current of 2.5 A with a typical on-resistance of 0.8 Ω. It operates in an ambient temperature range of -25°C to +85°C and is housed in a 28-pin HTSSOP-B package with exposed pad for thermal dissipation.

Feature Summary

• Supports eighth-step micro-stepping resolution through an internal 3-bit digital-to-analog converter.
• Enables adjustable current decay control by mixing fast and slow decay modes for optimized motor performance.
• Integrates comprehensive protection mechanisms including over-temperature, over-current, under-voltage lockout, and over-voltage output shutdown.
• Utilizes low on-resistance DMOS technology to achieve high efficiency and reduced heat generation.

Applications

• General purpose bipolar stepper motor control systems
• Industrial automation equipment requiring precise motion control
• Office automation devices such as printers and scanners

Procurement Notes

Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm pinout compatibility and electrical specifications. Ensure the ordering quantity aligns with the standard factory reel size of 2500 units or cut tape availability. Confirm RoHS compliance status and moisture sensitivity level requirements prior to final procurement decisions.

Selection Notes

Select this component when driving bipolar stepper motors with peak currents up to 2.5 A using a single power supply. It is suitable for designs requiring eighth-step resolution and adjustable decay timing. Consider the 28-pin HTSSOP-B package constraints and thermal management needs due to the exposed pad design for adequate heat dissipation during operation.

Part Context

This part belongs to the BD63860 series of stepping motor drivers manufactured by ROHM Semiconductor. It is positioned as a recommended product for new designs, offering advanced micro-stepping capabilities compared to earlier generations. The series focuses on providing high precision and energy efficiency for compact motor control applications.

Replacement Considerations

The BD63843EFV is a related model in the same family but offers lower current ratings and different step resolutions. Verify pin compatibility and electrical parameters before substituting. No other direct substitute part numbers are confirmed in the provided documentation.

FAQ

What step modes does the BD63860EFV-E2 support?

The device supports Full Step, Half Step, Quarter Step, and Eighth Step modes, enabled by its built-in 3-bit DAC.

How is the current decay controlled in this driver?

It allows free setting of the current decay mode by mixing Fast Decay and Slow Decay ratios to optimize motor control characteristics.