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EUP8202-4.2

Eutech Microelectronics
Part Number EUP8202-4.2
Manufacturer Eutech Microelectronics
Description Switch Mode Li-Ion/Polymer Battery Charger
Published Apr 16, 2008
Detailed Description EUP8202-4.2/8.4 Switch Mode Li-Ion/Polymer Battery Charger DESCRIPTION The EUP8202 is a constant current, constant volta...
Datasheet PDF File EUP8202-4.2 PDF File

EUP8202-4.2
EUP8202-4.2

Overview
EUP8202-4.
2/8.
4 Switch Mode Li-Ion/Polymer Battery Charger DESCRIPTION The EUP8202 is a constant current, constant voltage Li-Ion battery charger controller that uses a current mode PWM step-down (buck) switching architecture.
With a 500kHz switching frequency, the EUP8202 provides a small, simple and efficient solution to fast charge one (4.
2V) or two (8.
4V) cell lithium-ion batteries.
The EUP8202 charges the battery in three phases: conditioning, constant current, and constant voltage.
An external sense resistor sets the charge current with ¡Ó 10% accuracy.
An internal resistor divider and precision www.
DataSheet4U.
com reference set the final float voltage to 4.
2V per cell with ¡Ó 1% accuracy.
An internal comparator detects the near end-of-charge condition while an internal timer sets the total charge time and terminates the charge cycle.
The EUP8202 automatically re-starts the charge if the battery voltage falls below an internal threshold, 4.
05V per cell.
The EUP8202 also automatic...


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