A3904EEWTR-P

Overview

The A3904EEWTR-P is a fully integrated brushed DC motor driver manufactured by Allegro MicroSystems. It operates within a supply voltage range of 2.4V to 5.5V and delivers an output current of 127.5mA. The device utilizes I2C interface for control and features power MOSFET technology. It is housed in a compact 6-DFN/MLP package measuring 1.5x2mm with a bottom exposed pad. The component supports an operating junction temperature range from -40°C to +150°C and includes low-side output configuration.

Feature Summary

• Fully integrated design combining control logic and power stage
• I2C digital interface for simplified system connectivity
• Built-in thermal protection mechanisms

Applications

• Camera lens actuation systems
• Voice coil motor control
• Compact electromechanical actuators

Procurement Notes

Verify component authenticity through authorized channels as this part number is marked as obsolete by the manufacturer. Confirm availability with secondary suppliers such as Rochester Electronics, LLC, who may hold existing stock. Ensure strict adherence to moisture sensitivity level (MSL 3) handling protocols during storage and assembly to prevent package damage. Validate that the specific revision matches project requirements due to potential legacy status.

Selection Notes

Select this component for applications requiring precise digital control of small voice coil motors via I2C. The wide operating temperature range suits demanding environments. Consider the discontinued status when planning long-term production cycles. Evaluate alternative packages like WLCSP if board space constraints require smaller footprints than the available DFN option provides.

Part Context

This device belongs to the A3904 series of motor drivers designed for low-power, high-precision motion control tasks. It integrates necessary gate drivers and protection circuits into a minimal footprint. The series targets portable electronics where size and efficiency are critical. It serves as a specialized solution for micro-stepping or linear positioning in optical devices.

Replacement Considerations

Public confirmed substitute part numbers: None.