MCP73832T-5ACI/MC

Overview

The MCP73832T-5ACI/MC 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 3.75V to 6V and provides a regulated output voltage of 4.5V for the battery cell. The device supports a programmable constant charging current with a maximum limit of 500mA, allowing customization via an external resistor. Designed for surface-mount installation, it utilizes an 8-DFN (2x3) package with an exposed pad. The component functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Supports constant-current/constant-voltage charging profiles for single-cell lithium-ion and lithium-polymer batteries
• Features a programmable charging current controlled by a single external resistor
• Integrates thermal regulation to automatically reduce charging current during high-temperature operation
• Includes status indicator output to signal charge completion or fault conditions

Applications

• Portable electronic devices requiring single-cell lithium battery charging
• Consumer electronics powered by lithium-ion or lithium-polymer cells
• Industrial control systems utilizing compact power sources
• Medical equipment with strict safety and reliability requirements for battery management

Procurement Notes

Verify the specific suffix '5ACI/MC' to confirm the 4.5V output voltage setting, as other variants in the MCP73832 family offer different voltages such as 4.2V. Ensure the procurement source provides the original manufacturer datasheet for the MCP73831/2 series to validate electrical characteristics and pin configurations. Confirm that the 8-DFN package dimensions match the target PCB footprint design specifications.

Selection Notes

Select this component when a fixed 4.5V charging termination voltage is required for the specific battery chemistry in use. Compare against the MCP73832T-2DCI/OT if a standard 4.2V output is needed instead. Consider the 8-DFN package constraints regarding thermal dissipation and available board space relative to SOT-23-5 alternatives. Verify that the application's input voltage remains within the 3.75V to 6V operational range for proper regulation.

Part Context

This part belongs to the MCP73831/2 family of charge management controllers designed for portable applications. The MCP73832 variant specifically offers higher current capabilities compared to the MCP73831. The 'MC' suffix denotes the 8-DFN package type, distinguishing it from the SOT-23-5 packaged versions like the OT suffix. This family is widely used in consumer electronics due to its small footprint and integrated protection features.

Replacement Considerations

MCP73832-5ACI/MC is the non-tape-and-reel equivalent of this part number.