MCP73832T-3ACI/MC

Overview

The MCP73832T-3ACI/MC is a single-cell lithium-ion or 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 4.35V for the battery cell. The device supports a maximum programmable charging current of 500mA, allowing for flexible power management configurations. Designed for surface-mount installation, it utilizes an 8-DFN (2x3) package with a thermal pad, suitable for compact electronic designs. The component functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated linear charge management controller optimized for single-cell lithium-ion and lithium-polymer batteries
• Programmable constant-current charging capability with automatic termination upon reaching full charge
• Built-in thermal regulation that dynamically reduces charging current to prevent overheating
• Status indicator pin providing visual feedback on charging state and fault conditions

Applications

• Portable consumer electronics such as smartphones and tablets
• Wearable technology including fitness trackers and smartwatches
• Medical devices requiring reliable single-cell battery charging
• Industrial handheld instruments and sensors

Procurement Notes

Verify the specific suffix 'MC' corresponds to the 8-DFN package variant rather than the SOT-23-5 option. Confirm the '-3A' designation matches the required 4.35V output voltage for your specific battery chemistry. Ensure the '-CI' temperature grade aligns with your operational environment requirements. Cross-reference the manufacturer part number directly with official Microchip documentation to avoid confusion with similar series components.

Selection Notes

Select this component when designing systems requiring a compact solution for single-cell Li-Ion or Li-Po batteries. The 8-DFN package offers a smaller footprint compared to traditional SOT-23-5 variants, making it ideal for space-constrained applications. Consider the 500mA maximum current limit when determining system power budgets. Verify that the input voltage source can sustain the required operating range of 3.75V to 6V under all load conditions.

Part Context

This part belongs to the MCP73831/2 family of charge management controllers from Microchip Technology. While functionally similar to the MCP73831, the MCP73832 includes additional features such as a status output pin for monitoring charge completion. The family is designed for low-cost, high-reliability battery charging in portable devices. The specific model differs from other package options like the SOT-23-5 version, primarily in physical dimensions and thermal characteristics.

Replacement Considerations

MCP73832T-3ACI/OT