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Li-Ion/Li-Polymer Chargers Have Auto USB or AC Power-Source Selection

Mon, 04/07/2008 - 10:14am

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The MCP73837 and MCP73838 dual-input, high-current Li-Ion/Polymer charge-management controllers are available. The single-cell, fully integrated chargers enable charge currents of up to 1 A from an AC power source, plus charging currents of up to 100 or 500 mA from a USB port. They have several on-chip safety features and are available in 10-pin MSOP and 3 × 3 mm DFN packages, to enable smaller, faster, and safer battery-charger designs. The devices feature auto power-source selection from either a USB port or AC adapter, which provides an automatic charge from a PC’s USB port when no AC power is available.
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