MCP73833-CNI/UN

Overview

The MCP73833-CNI/UN is a single-cell lithium-ion and lithium-polymer battery charge management controller manufactured by Microchip Technology. It operates within a supply voltage range of 3.75 V to 6 V and provides a regulated output voltage of 4.2 V with a maximum output current of 1.2 A. The device is housed in a compact MSOP package designed for surface mount technology (SMD/SMT) installation. It supports an operating temperature range from -40 °C to +85 °C and includes humidity sensitivity features.

Feature Summary

• Implements complete constant-current and constant-voltage linear charging profiles for single-cell lithium-based batteries
• Integrates thermal regulation functionality to manage die temperature during high-current charging operations
• Includes status indicator pin capability for monitoring charge state and fault conditions

Applications

• Portable electronic devices requiring single-cell lithium-ion or lithium-polymer battery charging
• USB-powered consumer electronics utilizing the MCP73833 charge management controller
• Battery protection circuits in handheld equipment and mobile accessories

Procurement Notes

Verify the specific suffix CNI against official Microchip documentation to confirm exact marking, tape-and-reel availability, and moisture sensitivity level classifications. Ensure compatibility with target PCB footprint dimensions for the MSOP package. Confirm RoHS compliance status and lead-free specifications prior to final procurement decisions.

Selection Notes

Select this component when designing systems requiring a dedicated linear charge controller for single-cell Li-Ion or Li-Po batteries. The MSOP package offers a small form factor suitable for space-constrained portable applications. Verify that the input power source falls within the specified 3.75 V to 6 V operational range to ensure proper regulation and performance.

Part Context

This part belongs to the MCP7383x family of charge management controllers from Microchip Technology. The family is designed for simple, cost-effective charging solutions for portable devices. Variants within the series typically share core electrical characteristics but differ in packaging options such as DFN or MSOP to accommodate different board layout requirements.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference data. Consult Microchip technical support or authorized distributors for verified cross-reference information before substituting this component.