MCP1623-I/MC

Overview

The MCP1623-I/MC is a synchronous boost DC-DC converter manufactured by Microchip Technology, designed for low-power applications. It operates with an input voltage range of 0.65 V to 5.5 V and provides a regulated output between 2 V and 5.5 V. The device supports a maximum output current of 50 mA and features a fixed switching frequency of 500 kHz. Key electrical specifications include a quiescent current of 19 µA and line/load regulation of 0.01 %/V. It is housed in an 8-pin DFN package (3 x 2 x 0.95 mm) and is qualified under AEC-Q100 standards for automotive reliability.

Feature Summary

• Synchronous rectification architecture for enhanced efficiency in step-up conversion
• Low quiescent current consumption optimized for battery-powered systems
• Integrated power switch and control logic in a compact surface-mount package

Applications

• Powering low-power microcontrollers from single-cell lithium-ion batteries
• Boosting voltage from alkaline or NiMH battery sources
• Portable medical devices requiring stable voltage rails
• Automotive electronics compliant with AEC-Q100 standards

Procurement Notes

Verify the specific suffix 'I/MC' against the manufacturer's official datasheet to confirm industrial temperature range (-40°C to +85°C) and packaging type. Ensure compatibility with required input/output voltage levels and load current demands before integration. Cross-reference the AEC-Q100 qualification status if automotive application is intended. Confirm pinout and thermal pad requirements for PCB layout design.

Selection Notes

Select this component when a synchronous boost topology is required for higher efficiency compared to asynchronous alternatives. Consider the 50 mA output limit and 500 kHz switching frequency for EMI and component sizing constraints. Evaluate the 19 µA quiescent current impact on standby battery life. Verify that the 0.65 V minimum input voltage aligns with the source battery's discharge curve.

Part Context

The MCP1623 belongs to Microchip's family of synchronous boost converters, which also includes variants like the MCP1624. These devices are part of the broader PMIC portfolio aimed at energy-efficient power management. The I/MC designation indicates the industrial temperature grade and DFN-8 package configuration, distinguishing it from commercial or automotive-specific variants within the same functional family.

Replacement Considerations

Direct substitutes may include other Microchip synchronous boost converters such as the MCP1624, provided output current and voltage ranges match. Verify pin-to-pin compatibility and thermal performance when replacing. Check for any differences in switching frequency or control interface that might affect surrounding circuitry.