Li-ion/li-polymer Battery Charger Accepting Two Power SourcesThe ISL6299 is a fully integrated low-cost single-cell Li-ion or
Li-polymer Battery Charger The charger accepts two power
inputs, normally one from a USB (Universal Serial Bus) port
and the other from a desktop cradle. The ISL6299 is an ideal
charger for smart handheld devices that need to
communicate with a personal computer via USB
The ISL6299 features 28V and 7V maximum voltages for the
cradle and the USB inputs respectively. Due to the 28V
rating for the cradle input, low-cost, large output tolerance
adapters CAN be used safely. When both inputs are powered,
the cradle input is used to charge the battery. The charge
current is programmable for the cradle input with a small
resistor. The end-of-charge current for the cradle input is
also programmable by another external resistor. The charger
incorporates Thermaguard which protects the IC against
over temperature. If the die temperature rises above a
typical value of 100C, a thermal foldback function reduces
the charge current automatically to prevent further
temperature rise. The charger preconditions the battery with
low current when the battery voltage is below 2.6V. The By Intersil Corporation
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ISL6299 Pb-Free | ISL6299 Cross Reference | ISL6299 Schematic | ISL6299 Distributor |
ISL6299 Application Notes | ISL6299 RoHS | ISL6299 Circuits | ISL6299 footprint |