MCHPMCP73831T-2ACI/OT

Overview

The MCP73831T-2ACI/OT is a highly integrated linear charge management controller designed for single-cell lithium-ion and lithium-polymer batteries. It features an integrated pass transistor and current sensing in a compact SOT-23-5 package, requiring only a single external resistor to set the charging current. This specific variant features a 4.2V regulation voltage and a tri-state status output for simplified MCU interfacing.

Why Choose This Part

This controller provides a high-accuracy 0.75 percent voltage regulation and includes thermal regulation to manage heat during high-current or high-ambient temperature charging. It eliminates the need for an external MOSFET or sense resistor, reducing board space and bill-of-materials cost.

Applications

Getting Started

To implement this IC, connect the battery to the BAT pin and a 3.75V to 6V supply to the VDD pin. Select a programming resistor for the PROG pin to set the desired charge current up to 500mA, and monitor the STAT pin for charge completion or fault status.

MCP7383 Family

Comparing specs that differ across variants. The current part is highlighted.

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