EMC5090

ESMT EMC5090 2.5A Synchronous Buck Li-ion Battery Charger General Description The EMC5090 is a switch mode lithium-ion battery charger. It utilities a 1.5MHz synchronous buck converter topology to reduce power dissipation during charging. The internal MOS switch delivers current up to 2.5A to charge the battery. The built in pre-charge safety timer automatically terminates charging once the adjustable time limit has been reached. The EMC5090 includes complete charge termination circuitry, automatic recharge and a ±1% of 4.2V float voltage. This device is available in packages of TQFN-16L (4mmx4mm) for space-saving application. Typical Application Features „ 2.5A maximum Charge Current „ No external MOSFET, sense resistor or blocking Diode Required „ Programmable Trickle Charge Termination Timer „ Programmable Charge Current „ Programmable End-of-Charge Current „ Automatic Recharge „ Thermistor Input for Temperature Qualified Charging Applications „ PDAs, Tablet, Cell Phone...