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Charger suits portable devices

Posted: 07 Aug 2008     Print Version  Bookmark and Share

Keywords:Li-polymer charger  charge management  AC to DC adapter  USB port charging 


Microchip Technology Inc. announces the availability of the MCP73871 charge-management controller—a Li-ion/Li-polymer charger with an intelligent charge management feature that enables simultaneous AC to DC adapter or USB port charging and powering of devices. The single-chip charger has an integrated pass transistor and provides numerous battery and termination-voltage options. It is ideal for complex, space-constrained portable applications.

Allowing electronic equipment to be simultaneously powered and charged either by an AC to DC adapter or through a USB port, the controller enables the easier charging and powering of many portable devices. With its voltage regulation of 0.5 per cent, the charger extends battery life by charging it almost reaching its optimal limit. Using its integrated pass transistor, the charger minimises employing the external FET, and only a few small passive components are needed. As a result, smaller, less complicated and cheaper designs may be used.

"Our customers are looking for a compact charger to meet the demands of today's advanced portable electronic devices, which offer traditional wall-plug charging, plus USB-port charging and connectivity," said Bryan Liddiard, VP of marketing with Microchip's Analog and Interface Products Division. "The MCP73871 charger responds to these needs and offers everything from simple, USB-based battery charging, to complex power-path solutions."

The MCP73871 charge-management controller is ideal for portable consumer electronic products like GPS units, phone chargers, toys, cameras, PDAs and Bluetooth headsets.

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