MIC4680-1.8BM

Voltage Regulators - DC DC Switching Regulators Overview

The MIC4680-1.8BM is a fixed-output step-down (buck) switching regulator from the SuperSwitcher family, manufactured by Microchip Technology. It provides a fixed 1.8V output with a continuous current capability of 1.3A. The device operates within an input voltage range of 4V to 34V and utilizes a fixed 200kHz switching frequency. It is housed in an 8-pin SOIC package designed for surface mount applications.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Integrated thermal shutdown and overcurrent protection for enhanced reliability
• Requires only four external components for implementation
• Internally compensated for fast transient response
• Low typical shutdown-mode current consumption

Voltage Regulators - DC DC Switching Regulators Applications

• Point-of-load regulation for embedded systems
• Battery-powered equipment requiring efficient step-down conversion
• Industrial control systems with wide input voltage ranges

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'BM' indicates the tube packaging variant rather than tape-and-reel. Confirm RoHS compliance status as some legacy Micrel variants may differ. Ensure the fixed 1.8V output matches the design requirement, as adjustable or other voltage versions exist within the same series.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8V rail is required with up to 1.3A load current. It is suitable for designs prioritizing minimal external component count and high efficiency over a wide input voltage span. Consider the 8-SOIC package constraints for thermal management at maximum load.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MIC4680 SuperSwitcher series, which includes various fixed voltage outputs (e.g., 3.3V, 5.0V) and adjustable versions. The 'BM' suffix typically denotes a specific package and temperature grade configuration within the Microchip portfolio, distinguishing it from YM or TR variants.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

MIC4680-1.8YM-TR offers the same electrical specifications in a tape-and-reel package. MIC4680-1.8BM is the direct equivalent in tube packaging. Cross-reference with MIC4690 if higher switching frequency is needed.