LB1824-E

Overview

The onsemi LB1824-E is a three-phase motor driver IC designed for brushless DC (BLDC) motors. It integrates high-side and low-side power MOSFETs to drive three phases directly from logic inputs. The device features built-in protection mechanisms including overcurrent, thermal shutdown, and under-voltage lockout. It operates with a wide supply voltage range and supports PWM speed control. The component is housed in an 18-pin SOIC package suitable for surface mount applications.

Feature Summary

• Integrates three-phase bridge drivers with internal power MOSFETs
• Includes comprehensive protection against overcurrent, thermal overload, and undervoltage
• Supports direct interface with standard logic or microcontroller outputs
• Enables PWM-based speed regulation for brushless DC motors

Applications

• Brushless DC motor drives in home appliances
• Fan and pump control systems in industrial equipment
• Motor control units in automotive accessories

Procurement Notes

Verify the exact suffix and tape/reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the procurement channel provides genuine onsemi products with traceable lot codes. Ensure the receiving facility meets ESD handling standards required for integrated circuit components. Cross-reference the part number with official distributor catalogs to avoid counterfeit substitutions.

Selection Notes

Select this component when designing circuits requiring integrated three-phase driving capability without external discrete MOSFETs. Consider its current handling limits and thermal dissipation requirements relative to the target motor load. Evaluate the compatibility of input logic levels with the system controller. Assess whether the built-in protection features meet the safety requirements of the specific application environment.

Part Context

The LB1824-E belongs to onsemi's family of motor driver integrated circuits. These devices are engineered to simplify the design of BLDC motor control systems by combining gate drive logic with power output stages. This integration reduces board space and component count compared to discrete solutions, offering a compact approach for medium-power motor applications.

Replacement Considerations

Check for pin-compatible alternatives within the same product family that may offer updated packaging or enhanced thermal performance. Verify functional equivalence regarding drive current capacity and protection thresholds. Ensure any substitute maintains compatibility with existing PCB layout and control signal interfaces.