资 源 简 介
DescripTIonThe IRS254(0,1) are high voltage, high frequencybuck control ICs for constant LED current regulaTIon.They incorporate a conTInuous mode TIme-delayedhysteretic buck regulator to directly control theaverage load current, using an accurate on-chipbandgap voltage reference.The application is inherently protected against shortcircuit conditions, with the ability to easily add opencircuitprotection. An external high-side bootstrapcircuit drives the buck switching element at highfrequencies. A low-side driver is also provided forsynchronous rectifier designs. All functions arerealized within a simple 8 pin DIP or SOIC package.
