UDN2916LBTR-T

Overview

The UDN2916LBTR-T is a dual full-bridge PWM motor driver manufactured by Allegro MicroSystems, designed for bipolar stepper and brushed DC motors. It integrates control logic and power stages in a 24-SOIC package. Key electrical parameters include a continuous output current of 750 mA, an output sustaining voltage of 45 V, and a supply voltage range of 4.75 V to 5.25 V. The load voltage supports 10 V to 45 V. The device features internal clamp diodes, PWM current control, low output saturation voltage, and thermal shutdown circuitry. Operating temperature ranges from -20°C to +85°C (junction up to 150°C).

Feature Summary

• Integrates dual full-bridge drivers with internal PWM current control and clamp diodes.
• Includes internal thermal shutdown circuitry for protection.
• Provides low output saturation voltage for efficient power delivery.

Applications

• Bipolar stepper motor control
• Brushed DC motor drive applications
• General-purpose motor control systems

Procurement Notes

Verify the specific suffix 'TR-T' indicates tape and reel packaging configuration. Confirm RoHS3 compliance status as indicated in distributor records. Check component lifecycle status, as some sources list this part as obsolete or discontinued. Ensure the 24-SOIC footprint matches the target PCB design requirements before procurement.

Selection Notes

Select this component for applications requiring integrated dual H-bridge control with PWM capability. The 750 mA current rating suits moderate power motor loads. Consider the 4.75 V to 5.25 V supply requirement for logic compatibility. Evaluate thermal performance given the SOIC package size and junction temperature limits for high-duty cycle operations.

Part Context

This part belongs to the UDN2916 series of dual full-bridge motor drivers. It is functionally similar to the PBL3717 and UC3770 devices. The 'LB' designation typically refers to the lead-free and specific packaging variant within the Allegro MicroSystems portfolio. It serves as a complete solution for driving two bridge channels without external power transistors.

Replacement Considerations

Publicly confirmed substitute part numbers include A2916 and A2919. These alternatives offer similar dual full-bridge functionality. Verify pinout compatibility and electrical parameter alignment, such as current ratings and voltage limits, before substituting. Check datasheet revisions for any functional differences between the original and replacement parts.