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Product Detailed Parameters
- Description：3PHASE MOTOR DRIVER
- Series：*
- Mfr：onsemi
- Package：Bulk
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：-
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：-
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LB1921-E is a three-phase brushless DC motor controller manufactured by onsemi. It integrates control logic and power drivers for BLDC applications, supporting up to 2.5 A output current per phase. The device utilizes a PDIP-28 package configuration. Key operational parameters include a maximum supply voltage rating and defined operating temperature ranges suitable for industrial environments. The component provides commutation sequencing and protection features essential for reliable motor operation in embedded systems.
Feature Summary
- Integrated three-phase commutation logic for brushless DC motors
- Built-in power driver stages with overcurrent protection capabilities
- Supports standard Hall effect sensor inputs for rotor position detection
Applications
- Industrial automation equipment requiring precise motor control
- Consumer appliances utilizing brushless fan or pump motors
- Office machinery such as printers and copiers
Procurement Notes
Verify the specific suffix variant against the official datasheet to ensure compatibility with required pin configurations and thermal specifications. Confirm that the ordering information matches the exact part number designation including any tape and reel or tube packaging indicators specified by the manufacturer for the intended production volume.
Selection Notes
Evaluate the LB1921-E based on the required motor current ratings and available supply voltage constraints. Consider the PDIP-28 package limitations regarding thermal dissipation compared to surface-mount alternatives if space is restricted. Ensure the application environment falls within the specified operating temperature range for long-term reliability.
Part Context
This component belongs to onsemi's family of motor control integrated circuits designed for low-to-medium power BLDC applications. It serves as a complete solution combining logic and drive functions, reducing bill-of-materials complexity compared to discrete implementations. The series targets cost-sensitive designs where integration and reliability are prioritized.
Replacement Considerations
Cross-reference with other models in the same product family for potential pin-compatible upgrades or alternative packages. Verify functional equivalence regarding control interface signals and current handling capabilities before substituting.
