MCP73833T-CNI/MF

Overview

The MCP73833T-CNI/MF is a linear single-cell lithium-ion or lithium-polymer battery charge management controller manufactured by Microchip Technology. It supports an output voltage of 4.2 V, 4.35 V, 4.4 V, and 4.5 V with a maximum output current of 1200 mA. The device operates within a supply voltage range of 3.75 V to 6 V and functions across a temperature range of -40°C to +85°C. It is housed in a 10-pin DFN package measuring 3 mm x 3 mm with a height of 0.88 mm, supplied in tape and reel packaging.

Feature Summary

• Integrates complete linear charge management for single-cell Li-Ion and Li-Polymer batteries
• Includes thermal regulation to manage die temperature during high-current charging
• Provides status indication via dedicated open-drain flag and charge status pins

Applications

• Portable consumer electronics requiring single-cell battery charging
• Medical devices utilizing lithium-based power sources
• Industrial handheld equipment needing reliable charge management

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm the exact output voltage setting (4.2V, 4.35V, 4.4V, or 4.5V) as indicated in the datasheet. Ensure the DFN-10 package dimensions and thermal pad requirements match the target PCB layout. Confirm that the tape and reel quantity aligns with production needs without relying on distributor stock claims.

Selection Notes

Select this component when a compact solution for single-cell lithium battery charging is required. The DFN package offers a small footprint suitable for space-constrained designs. Consider the 1200 mA output capability for faster charging cycles compared to lower-current alternatives. Verify compatibility with the system's input voltage range of 3.75 V to 6 V before integration.

Part Context

This part belongs to the MCP7383x family of charge management controllers from Microchip Technology. The series is designed for single-cell lithium-ion and lithium-polymer batteries, offering integrated safety features and thermal regulation. The T-CNI/MF designation specifies the tape and reel packaging variant of the DFN package model.

Replacement Considerations

MCP73833-AMI/UN: MSOP package variant with similar electrical characteristics. MCP73833-FCI/UN: MSOP package variant with different output voltage options.