Citation
(2009), "Microchip technology debuts USB/AC load-sharing Li-Ion/Li-Polymer battery charger", Microelectronics International, Vol. 26 No. 1. https://doi.org/10.1108/mi.2009.21826aad.006
Publisher
:Emerald Group Publishing Limited
Copyright © 2009, Emerald Group Publishing Limited
Microchip technology debuts USB/AC load-sharing Li-Ion/Li-Polymer battery charger
Article Type: New products From: Microelectronics International, Volume 26, Issue 1
Microchip announces the MCP73871 charge-management controller – a
Li-Ion/Li-Polymer charger with an intelligent charge management feature that
enables simultaneous AC-DC-adapter or USB-port charging and powering of devices.
The single-chip charger features an integrated pass transistor and numerous
battery and termination-voltage options, making it ideal for complex,
space-constrained portable applications. The charge controller is available at
distributor Rutronik now (Figure 2).
Figure 2 The MCP73871 charge-management controller
With highly accurate voltage regulation of 0.5 percent, the new charger extends battery life by allowing the battery to be charged closer to its optimal limit. Additionally, with its integrated pass transistor, the charger eliminates the need for an external FET, and only a few small passive components are necessary. This results in smaller, less complex and less expensive designs.
The MCP73871 charge-management controller is ideal for portable consumer electronic products, such as GPS units, phone chargers, toys, cameras, PDAs, Bluetooth® headsets, and many more. Microchip is also announcing the MCP73871 Evaluation Board to help engineers get started using the new charger in their designs. The MCP73871 charger is available in a 20-pin, 4 × 4 mm QFN package