ISL9219
Li-ion Battery Charger
The ISL9219 is a fully integrated high input
voltage single-cell Li-ion battery charger.
This charger is fully in compliance with the USB electrical specification.
The charger performs the CC/CV charge function required by Li-ion batteries.
The charger accepts an input
voltage up to 28V but is disabled when the input
voltage exceeds the OVP threshold, typically 6V, to prevent excessive power dissipation.
The 28V rating eliminates the over
voltage protection circuit required in a low input
voltage charger.
The fast charge current is programmable with an external resistor, and the end-of-charge (EOC) current is fixed at 50mA for any input source type.
When the in...