LB11920-E

Overview

The LB11920-E is a direct PWM drive motor driver IC designed for three-phase power brushless motors. It operates over a wide supply voltage range of 9.5 to 30V. The device supports three-phase bipolar drive and allows PWM duty control via IC inputs. It integrates high and low side kickback absorbing diodes and includes forward/reverse direction switching circuits.

Feature Summary

• Direct PWM drive capability for three-phase brushless motors
• Integrated protection circuits including current limiter, low-voltage protection, motor lock protection, and thermal protection
• Built-in braking function with short-circuit braking capability
• Forward and reverse direction switching circuit integration

Applications

• Office equipment applications
• Three-phase brushless motor control systems
• OA products requiring precise motor speed regulation

Procurement Notes

Verify the manufacturer origin as Sanyo Semicon Device or ON Semiconductor, noting the acquisition history. Confirm the package type matches the required DIP-28 configuration. Ensure the component meets RoHS compliance standards if specified for the target application. Check for any specific ordering suffixes that may indicate temperature ranges or packaging variations distinct from the standard part number.

Selection Notes

Select this component when a dedicated driver for three-phase brushless motors is required within a 9.5V to 30V supply range. It is suitable for applications needing integrated protection features such as thermal and current limiting without external components. Consider its direct PWM input interface for simplified control logic in office automation and similar equipment designs.

Part Context

Originally manufactured by Sanyo Semicon Device, the LB11920 series was acquired by ON Semiconductor. The LB11920-E variant continues the lineage of three-phase brushless motor drivers intended for office automation products. It serves as a specialized solution for controlling brushless motors in environments where reliability and integrated protection are critical for system stability.

Replacement Considerations

Potential substitutes include other three-phase brushless motor drivers from the same family, such as the LB1695, LB1870, LB1881V, or LB1955. Verify pin compatibility and electrical specifications before substitution. Cross-reference with Hitachi Semiconductor's HA13563 if sourcing from alternative manufacturers.