MCHPMCP73833-AMI/UN
Overview
The MCP73833-AMI/UN is a highly integrated linear charge management controller designed for single-cell Li-Ion and Li-Polymer batteries. It features an integrated pass transistor and current sense in a compact 10-pin MSOP package, supporting a maximum programmable charge current of 1.1A. The device provides complete charge cycle management including preconditioning, constant current/constant voltage modes, and thermal regulation.
Why Choose This Part
This controller offers dual status outputs for easy LED or MCU monitoring of charge progress and fault conditions. It includes an integrated thermistor interface for cell temperature monitoring and automatic power-down when input power is removed to conserve battery life.
Applications
Key Specifications
Getting Started
To implement this part, calculate the PROG resistor value to set your desired charge current up to 1.1A. Ensure adequate PCB copper area under the MSOP package for thermal dissipation and connect a 10kOhm NTC thermistor to the THERM pin for safety monitoring. Microchip provides various MCP73833 evaluation boards (e.g., MCP73833EV) for rapid prototyping.
MCP7383 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Fault Protection | Battery Pack Voltage | Charge Current - Max | Stock |
|---|---|---|---|---|---|
| MCP73833-AMI/UN (this part) | TFSOP-10 | Over Temperature | 4.2V | 1.1A | 3,385 |
| MCP73831T-2ATI/OT | SC-74A, SOT-753 | Over Voltage | 4.2V | 500mA | 27,378 |
| MCP73831T-2ACI/OT | SC-74A, SOT-753 | Over Voltage | 4.2V | 500mA | 50,369 |
| MCP73832T-2ATI/OT | SC-74A, SOT-753 | Over Voltage | 4.2V | 500mA | 17,920 |
| MCP73831-2ACI/MC | VFDFN-8 | Over Voltage | 4.2V | 500mA | 57,861 |
| MCP73831T-4ADI/OT | SC-74A, SOT-753 | Over Voltage | 4.4V | 500mA | 2,664 |
| MCP73831T-4ADI/MC | VFDFN-8 | Over Voltage | 4.4V | 500mA | 3,708 |
