MCP73828-4.1VUA

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The MCP73828-4.1VUA is a Battery Charger with multi-channel (four independent linear charge control channels), low-voltage cut-off and low current monitoring features. It is suitable for applications such as charging Li-Po, Li-Ion, NiMH, and NiCd batteries, as well MCU and logic voltage regulators for portable and stationary equipment. The MCP73828-4.1VUA is based on the Microchip MCP73828 IC, with additional components to support the low voltage cut-off and low current monitoring features. The IC is designed for 4.1V, and is also available in versions for other voltages.

The MCP73828-4.1VUA is a low-cost solution for multi-channel battery charging and monitoring applications. It is optimized for advanced charging solutions, and integrates multiple safety features to ensure safe and reliable operation. The IC includes four independent linear charge control channels, providing precise charge operation and safe charge termination. The low voltage cut-off feature is enabled by the integrated dual independent comparators and the low current monitoring feature is implemented by the open-drain low current sense circuit.

The MCP73828-4.1VUA is an advanced and low cost power management IC (PMIC) which integrates the world’s smallest and most advanced features for battery charging, providing an ideal solution for a wide range of applications. The IC also features a power-saving programmable trickle charging mode, wide operating temperature range from -40°C to +85°C, and low quiescent current consumption. Additionally, the IC is designed for robust operation under extreme electro-magnetic interference(EMI) conditions. The MCP73828-4.1VUA is RoHS compliant and is available in compact packages.

The basic working principle of the MCP73828-4.1VUA is as follows: The integrated ADC/Comparator detects the battery voltage and adjusts the charge current as required. The charge current is derived from two current control channels, one in the active region and one in the standby region. The IC can be programmed to maintain an average charge current in the active region, while allowing the charge current to ramp down in the standby region. In addition, the IC includes an internal voltage reference, enabling precise charge control. Once the battery has completed charging, the MCP73828-4.1VUA automatically terminates the charge cycle, preventing over-charging and extending battery life.

The MCP73828-4.1VUA is an ideal solution for a wide range of multi-channel battery charging and monitoring applications. Its features, such as precision charging control, low quiescent current consumption, wide operating temperature range, and robust operation under EMI conditions, make it an excellent choice for a variety of applications ranging from consumer electronics, to medical, to industry. It is cost-effective, reliable and easy to integrate in any design, making it a popular choice for battery charging applications.

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