ISL9211B - Charging System Safety Circuit
SYMBOL VIN GND NC FAULT EN VB ILIM OUT PAD PIN NUMBER DESCRIPTION 1 The input power source.
VIN can withstand 24V input.
2 System ground reference.
3 No connection, and must be left floating.
4 FAULT is an open-drain logic output that turns LOW when any protection event occurs.
5 IC
ISL9211B Charging System Safety Circuit The ISL9211B is an integrated circuit (IC) optimized to provide a redundant safety protection to a Li-ion battery charging system.
The IC monitors input voltage, battery voltage, and charge current.
When any of these parameters exceeds its limit, the IC turns off an internal N-channel MOSFET to remove power from the charging system to the battery.
The IC also monitors its own internal temperature and turns off the N-channel MOSFET when the temperature exce
ISL9211B Features
* 24V Max Input Voltage
* Supports Up To 2.0A Input Current
* Fully Integrated Protection Circuit for Three Protected Variables
* High Accuracy Protection Thresholds
* User Programmable Overcurrent Protection Threshold
* Responds to Input Overvoltage i
