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Product Detailed Parameters
- Description：IC MTR DRV UNIPLR 4.8-5.2V 64QFP
- Series：-
- Mfr：NXP USA Inc.
- Package：Box
- Motor Type - Stepper：Unipolar
- Motor Type - AC, DC：Brushed DC
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Half-Bridge (4), High-Side (2), Low-Side (1)
- Interface：Serial
- Technology：Power MOSFET
- Step Resolution：-
- Applications：General Purpose
- Current - Output：1.5A, 4.5A
- Voltage - Supply：4.8V ~ 5.2V
- Voltage - Load：0V ~ 38V
- Operating Temperature：0°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：64-LQFP Exposed Pad
- Supplier Device Package：64-LQFP-EP (10x10)
- Grade：-
- Qualification：-
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Overview
The MC34921AE is a specialized PMIC designed for motor control applications, specifically targeting brushed DC and bipolar stepper motors. It integrates full H-bridge drivers with two dual low-side drivers. The device operates within an input voltage range of 4.8 V to 5.2 V, supporting output currents up to 1.5 A and 4.5 A depending on the configuration. It utilizes a serial interface for control and functions within a temperature range of 0°C to 70°C. Packaged in a 64-LQFP with an exposed pad, it provides a fully integrated solution for motor drive and power management.
Feature Summary
- Fully integrated driver with control and power stages for brushed DC and bipolar stepper motors
- Output configuration includes full H-bridge and two dual low-side drivers
- Serial interface for digital control and monitoring
Applications
- General purpose motor control systems
- Industrial automation actuators
- Consumer appliance motor drives
Procurement Notes
Verify the specific suffix 'AE' against official NXP documentation to confirm package type and temperature grade. Ensure compatibility with the required 4.8 V to 5.2 V supply rail. Confirm that the 64-LQFP footprint matches the PCB design. Check for moisture sensitivity levels if reflow soldering is planned. Validate that the serial interface protocol aligns with the host controller.
Selection Notes
Select this component when a dedicated motor driver IC is preferred over discrete solutions to reduce board space. It is suitable for applications requiring precise control of brushed DC or bipolar stepper motors within a narrow 5V supply window. Consider the thermal performance of the LQFP package for high-current loads. Verify that the serial interface latency meets system timing requirements.
Part Context
This part belongs to NXP's portfolio of specialized power management and motor driver integrated circuits. It complements other MCU-based control solutions by offloading high-current switching tasks. The device is part of a broader ecosystem of industrial and consumer electronics components designed for reliable operation in standard commercial temperature ranges.
Replacement Considerations
Check NXP datasheets for direct pin-to-pin replacements within the MC349xx series. Evaluate third-party motor driver ICs with similar H-bridge configurations and 5V operating voltages. Ensure any substitute supports both brushed DC and bipolar stepper motor topologies.
