Microchip MCP73811T Battery Charger Li-Ion Li-Pol SOT-23-5

Microchip MCP73811T Battery Charger is a miniature, fully integrated charge management controller for single-cell Li-Ion and Li-Polymer batteries, delivering a 450mA charge current in a compact SOT-23-5 package.

Overview

The MCP73811T is a simple linear charge management controller designed for space-limited applications. It provides specific charge algorithms for single-cell Li-Ion or Li-Polymer batteries, aiming to achieve optimal capacity in the shortest possible charging time. When powered from a USB port, the controller adheres to the specifications governing the USB power bus, making it an suitable choice for portable applications. Only two external ceramic capacitors are required to implement a complete charging solution, which minimises component count and board space.

Key Features

• ±1% voltage regulation accuracy for precise charging
• On-chip thermal regulation to protect the device during operation
• Logic-selectable charge current
• External end-of-charge control
• Automatic power-down when input power is removed
• Active-high charge enable

Specifications

• Input voltage: 6V
• Battery charge voltage: 4.2V
• Charge current: 450mA
• Operating temperature range: -40°C to 85°C
• Package: SOT-23 with 5 pins, suitable for surface mount applications
• Dimensions (W x D x H): 3.3 x 1.5 x 4.3
• Weight: 0.033 gm

Applications

Suitable for a wide range of power management and consumer electronics applications, this controller is well suited to portable devices where space is at a premium. It combines charging performance, efficiency, and ease of use in a small footprint.

Please note that this is an ESD-sensitive device, and proper precautions should be taken when handling it.