Datasheet IR3889 IR OptiMOS IPOL (Infineon) - 8

IR OptiMOS™ IPOL 30 A single-voltage synchronous Buck regulator Pin descriptions Pin# Pin Name I/O Type Pin Description
Output voltage feedback pin. Connect this pin to the output 30 FB I Analog of the regulator via a resistor divider to set the output voltage. This pin provides the return connection for a pseudo remote voltage sensing. The feedback resistor divider should be 31 VSENM - Analog connected to this pin. It is also used as ground for the internal reference voltage. Signal ground for the internal circuitry except the internal 32 AGND - Ground reference voltage. Multi-function pin. Connect a resistor to a quiet ground to set 36 TON/MODE I Analog the switching frequency to 1 of 8 settings and sets the mode of operation to FCCM or DEM. 28, 33, 34, Not NC - Not connected internally. They can be left floating on PCB. 35 connected Final Datasheet 8 of 50 V2.4 2020-1-16 Document Outline Revision History Trademarks Disclaimer