A4954ELPTR-T

Overview

The A4954ELPTR-T is a dual DMOS full-bridge motor driver IC designed for pulse width modulated control of two DC motors. It supports operating voltages from 8V to 40V and delivers peak output currents up to ±2A. The device integrates four half-bridges within a low-profile 16-pin thin-shrink small-outline package (eTSSOP) featuring an exposed pad for thermal management. It includes internal circuit protection mechanisms such as overcurrent protection, short-to-ground or supply detection, and thermal shutdown with hysteresis.

Feature Summary

• Integrates dual full-bridge drivers for independent PWM control of two DC motors
• Includes comprehensive internal protection against overcurrent, shorts, and overheating
• Utilizes a low-profile surface-mount package optimized for thermal dissipation

Applications

• Printers and copiers in office automation equipment
• Consumer electronic devices requiring motor control
• Industrial applications utilizing brushed DC motors

Procurement Notes

Verify the specific suffix 'ELPTR-T' against the manufacturer's official datasheet to confirm pinout compatibility and electrical specifications. Ensure the procurement source provides valid traceability documentation. Confirm that the 16-eTSSOP-EP package dimensions align with the target PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when designing systems requiring simultaneous control of two brushed DC motors within a 40V limit. The integrated thermal pad and protection features make it suitable for space-constrained designs where reliability under fault conditions is critical. Evaluate the ±2A current capability against the specific motor load requirements.

Part Context

This part belongs to the A495x family of DC motor driver ICs from Allegro MicroSystems. It complements other models like the A4952 and A4953, which offer similar full-bridge capabilities. The A4954 series is specifically engineered to address thermal and industrial design concerns in compact office automation and consumer electronics markets.

Replacement Considerations

Direct substitutes within the same family include the A4952 and A4953. Verify functional equivalence regarding voltage ratings and current capabilities. Cross-reference the package outline drawing to ensure mechanical compatibility during replacement.

FAQ

What type of motor control does the A4954 support?

It supports pulse width modulated (PWM) control of two brushed DC motors.

Does the A4954 include protection features?

Yes, it includes overcurrent protection, short-to-ground/supply detection, and thermal shutdown with hysteresis.