Product category:
Power Supply ICs and Controllers
News Release from: Microchip Technology | Subject: MCP73831
Edited by the Electronicstalk Editorial
Team on 02 December 2005
Charger chip raises thermal efficiency
The MCP73831 battery charger is a fully integrated, single-cell, Li-ion/Li-polymer charge-management controller.
Microchip has expanded its power-management family with the MCP73831 battery charger - a fully integrated, single-cell, Li-ion/Li-polymer charge-management controller Equipped with a pass transistor, current sensing and reverse-discharge protection, the MCP73831 charger reduces the number of components needed for battery-charger designs
This article was originally published on Electronicstalk on 17 Nov 2005 at 8.00am (UK)
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Another key feature of the MCP73831 charger is its simple status output that directly drives single or multicolour light-emitting diodes (LEDs).
Its highly accurate, preset voltage regulation (maximum up to 0.75%) results in more fully charged batteries and extended battery life.
In addition, the device's charge current is user-programmable, enabling customised charging currents for specific applications.
The controller also features on-chip thermal regulation that decreases charge current in over temperature situations, thus preventing damage to the device.
The charger also supports multiple regulation voltage outputs, making it an effective charging solution for different types of lithium battery technology.
The device's 5-pin SOT-23 or 8-pin, 2 x 3mm, thermally efficient DFN package enables smaller, smarter charger designs for a variety of portable devices such as Bluetooth headsets, MP3 players and digital cameras.
The thermal efficiency of the DFN package also allows high charging currents of up to 500mA for faster charging.
Microchip offers the MCP73831EV Evaluation Board for $45 to support the development of battery charger applications using the new MCP73831 charger.
The MCP73831 is available today for sampling and volume production.
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