MCP1642B-18I/MS

Voltage Regulators - DC DC Switching Regulators Overview

The MCP1642B-18I/MS is a synchronous step-up DC/DC regulator manufactured by Microchip Technology. It operates with an input voltage range of 1.8 V to 5.5 V and provides a fixed output voltage of 1.8 V. The device supports a maximum output current of 1.8 A and integrates a 1 MHz switching frequency. It features a compact MSOP-10 package and is rated for industrial temperature operation from -40°C to +85°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Synchronous rectification architecture for enhanced power conversion efficiency
• Integrated power switch capable of delivering high output current
• Fixed internal feedback network simplifies external component selection

Voltage Regulators - DC DC Switching Regulators Applications

• Portable battery-powered electronic devices
• USB peripheral power supply circuits
• General purpose step-up voltage regulation in embedded systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'MS' corresponds to the MSOP-10 package variant when sourcing. Confirm the '-18' designation indicates the fixed 1.8 V output version. Ensure the 'I' suffix matches the required industrial temperature range specifications for your application environment before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a fixed 1.8 V output is required from a single-cell lithium or alkaline battery source. The synchronous design offers superior efficiency compared to non-synchronous alternatives at moderate load currents. Consider the MSOP-10 package constraints regarding thermal dissipation and board space availability during the layout phase.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the MCP1642 family of synchronous boost converters. Other variants in the series include different fixed output voltages such as 3.0 V, 3.3 V, and 5.0 V, identified by their respective middle numeric codes. The family shares common control logic and protection features while differing primarily in the internal feedback divider ratios.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible substitutes within the same family include MCP1642B-30I/MS (3.0 V output) and MCP1642B-33I/MS (3.3 V output), provided the system voltage requirements are adjusted accordingly.