MCP1623T-I/CHY

Overview

The MCP1623T-I/CHY is a synchronous step-up DC-DC converter designed for low-voltage input applications. It operates with an input voltage range of 0.8V to 5.5V and provides an adjustable output voltage from 2V to 5.5V. The device delivers up to 150mA of output current at a fixed switching frequency of 500kHz. Packaged in a compact SOT-23-6 format, it supports surface mount installation. The component functions within a temperature range of -40°C to +85°C and holds AEC-Q100 qualification for automotive reliability.

Feature Summary

• Synchronous boost topology ensures high conversion efficiency
• Integrated power switch eliminates external inductor requirements for some configurations
• Fixed 500kHz switching frequency allows for small passive component selection
• AEC-Q100 qualified for automotive environment durability

Applications

• PIC microcontroller supply regulation
• Low-voltage battery-powered systems
• Portable electronic devices requiring step-up conversion

Procurement Notes

Verify the specific suffix CHY corresponds to the SOT-23-6 package and tape-and-reel quantity as defined in the official Microchip datasheet. Confirm AEC-Q100 status is required for your specific application tier. Ensure input voltage constraints are strictly observed to prevent regulator malfunction. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a compact synchronous boost solution is needed for inputs starting below 1V. The 150mA current limit suits low-power logic supplies rather than high-drain loads. Consider the 500kHz frequency trade-off between size and efficiency. Verify that the output voltage setting resistors align with the desired rail within the 2V to 5.5V range.

Part Context

This part belongs to the MCP1623/24 family of low-voltage input boost regulators. It is specifically optimized for powering PIC microcontrollers and other digital logic from single-cell lithium or alkaline batteries. The series emphasizes minimal external component count and high efficiency in space-constrained designs.

Replacement Considerations

Direct substitutes include MCP1623T-I/MC (DFN-8 package) and MCP1624T-I/CHY (higher current variant). Verify pin compatibility and thermal performance differences before substitution.