Power Electronics / Power Management


Customised battery chargers

19 March 2008 Power Electronics / Power Management

Freescale’s MC34671, MC34673 and MC34674 single-input autonomous battery charger ICs offer output voltage accuracy of ±0,4% over-temperature and charging current accuracy of ±5% over-temperature. The ICs can be customised to create hundreds of configurations to address a wide range of portable and ultra-mobile device needs. A designer can select features and specifications, such as pin-out, feature set, charging parameters and LED indication, and Freescale can deliver customised charger ICs by programming them at the end of the manufacturing process. Built using Freescale’s SMARTMOS process technology, the ICs are designed to deliver up to 1,2 A to single cell Li-Ion or Li-Polymer batteries. The battery charger input voltage can come from an AC adapter or a USB port power source. The high input voltage capability (up to 28 V) is designed to eliminate the need for an external input over-voltage protection circuit required in handheld devices, which helps reduce system cost and board space.



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