A3909GLNTR-T

Overview

The A3909GLNTR-T is a low-voltage dual full-bridge motor driver manufactured by Allegro MicroSystems. It integrates four half-bridge outputs to drive DC and bipolar stepper motors. The device operates within a supply voltage range of 4V to 18V and supports junction temperatures from -40°C to 150°C. It utilizes DMOS technology with a typical on-resistance of 1.6 ohms for the combined high-side and low-side channels. The component is housed in a 10-MSOP package with an exposed pad for thermal management.

Feature Summary

• Integrates dual full-bridge architecture for comprehensive motor control
• Includes built-in overtemperature and current limit protection mechanisms
• Features logic interface for straightforward digital control integration

Applications

• DC motor control systems
• Bipolar stepper motor drives
• General purpose motor applications

Procurement Notes

Verify the specific suffix GLNTR-T against the manufacturer datasheet to confirm pinout and packaging details. Ensure the ordering quantity aligns with the supplier's reel or cut-tape requirements. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components.

Selection Notes

Select this component for applications requiring low-voltage operation between 4V and 18V. The integrated thermal pad design suits designs needing efficient heat dissipation in compact spaces. Consider the 1.6 ohm on-resistance for power loss calculations. Verify that the load current requirements do not exceed the device's thermal limits under the expected ambient conditions.

Part Context

This part belongs to the A3909 family of motor drivers designed for low-voltage industrial and consumer applications. It provides a complete solution for driving two half-bridges, simplifying the bill of materials compared to discrete solutions. The device is intended for use in environments where space constraints and thermal performance are critical design factors.

Replacement Considerations

Consult official substitution lists for compatible Allegro motor drivers. Verify electrical compatibility including voltage ranges and output configurations before swapping parts.