LB1660N-E

Overview

The LB1660N-E is a two-phase motor driver integrated circuit manufactured by onsemi. It is designed for driving bipolar stepper motors and other two-phase loads. The device features a high-voltage power section capable of handling continuous output currents up to 2A per phase, with peak currents reaching higher levels depending on thermal conditions. It operates within a supply voltage range typically from 4V to 35V. The IC integrates protection functions such as over-current shutdown and thermal shutdown to ensure reliable operation under fault conditions. It utilizes a standard SSOP-16 package for surface-mount installation.

Feature Summary

• Integrated high-voltage power stage for direct drive of two-phase loads
• Built-in over-current and thermal protection mechanisms
• Compatible with standard logic input signals for easy interface

Applications

• Bipolar stepper motor control systems
• Valve actuation in industrial automation
• Relay driver circuits requiring high current switching

Procurement Notes

Verify the specific suffix and tape/reel configuration against the official datasheet before ordering. Confirm RoHS compliance status and lead times directly with authorized distributors or onsemi sales representatives. Ensure that the procurement channel provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when a robust, single-chip solution for two-phase motor driving is required. Consider its current rating and thermal performance relative to the load requirements. Evaluate the need for external heat sinking if operating near maximum current limits. Compare against alternative drivers based on package size constraints and input logic compatibility.

Part Context

The LB1660N-E belongs to onsemi's legacy motor driver portfolio, often associated with products originally developed through industry acquisitions. It serves as a cost-effective solution for applications where advanced digital control interfaces are not mandatory. Its design emphasizes simplicity and reliability for basic stepping and positioning tasks.

Replacement Considerations

Check for direct pin-to-pin compatible replacements listed in onsemi's product change notifications or distributor cross-reference tools. Verify electrical parameter equivalence, particularly regarding maximum voltage and current ratings, before substituting.