BD6381EFV-E2

Overview

The BD6381EFV-E2 is a bipolar stepper motor driver from ROHM Semiconductor, designed for low-voltage applications. It operates on a power supply voltage range of 2.5 V to 5.5 V and delivers a maximum output current of 1.2 A. The device features an operating supply current of 1.6 mA and supports a load voltage rating of 6 V to 13.5 V. It is housed in a 24-pin HTSSOP-B package with a power dissipation capacity of 4 W. The component functions within a temperature range of -25°C to +75°C.

Feature Summary

• Supports full step and half step operation modes for precise motor control
• Integrates protection circuits including overcurrent (OCP), thermal shutdown (TSD), and under-voltage lockout (UVLO)
• Features low on-resistance DMOS output stages for efficient power handling
• Utilizes CLK-IN interface for simplified digital control signaling

Applications

• Precision positioning systems requiring bipolar stepper motor control
• Low-voltage automation equipment and industrial actuators
• Consumer electronics with integrated motion control requirements
• Medical devices needing compact and reliable motor drivers

Procurement Notes

Verify the specific suffix E2 against the official ROHM datasheet to confirm pin compatibility and electrical characteristics. Ensure that the application circuit design accounts for the 4 W power dissipation limit and the specified thermal resistance of the HTSSOP-B-24 package. Confirm that the input signal levels are compatible with the 2.5 V to 5.5 V logic range before integration into the final system design.

Selection Notes

Select this component when a low-voltage (2.5 V–5.5 V) bipolar stepper driver is required with moderate current capability up to 1.2 A. It is suitable for designs prioritizing low standby current and integrated protection features. Consider the HTSSOP-B-24 package size constraints and the need for adequate thermal management due to the 4 W power dissipation rating in enclosed environments.

Part Context

This part belongs to the BD6381EFV series of bipolar stepper motor drivers manufactured by ROHM Semiconductor. It is specifically engineered for low-voltage operation, distinguishing it from higher-voltage counterparts in the broader product line. The device integrates control logic and power output stages into a single compact solution, aimed at simplifying motor drive circuitry for modern electronic devices.

Replacement Considerations

The BD6380EFV-E2 is a documented substitute within the same family, offering similar functionality but with a lower rated output current of 0.8 A compared to the 1.2 A of the BD6381EFV-E2. Verify that the reduced current capacity meets the specific motor requirements of the target application before substitution.