IRS2541PBF Datasheet | International Rectifier

Description The IRS254(0,1) are high voltage, high frequency buck control ICs for constant LED current regulation. They incorporate a continuous mode time-delayed hysteretic buck regulator to directly control the average load current, using an accurate on-chip bandgap voltage reference. The application is inherently protected against short circuit conditions, with the ability to easily add opencircuit protection. An external high-side bootstrap circuit drives the buck switching element at high frequencies. A low-side driver is also provided for synchronous rectifier designs. All functions are realized within a simple 8 pin DIP or SOIC package. Features - 200 V (IRS2540) and 600 V (IRS2541) half bridge driver - Micropower startup (<500 µA) - ±2% voltage reference - 140 ns deadtime - 15.6 V zener clamp on VCC - Frequency up to 500 k Hz - Auto restart, non-latched shutdown - PWM dimmable - Small 8-Lead DIP/8-Lead SOIC packages Packages 8-Lead PDIP IRS254(0,1)Pb F 8-Lead SOIC IRS254(0,1)SPb F Typical Application Diagram VBUS L2 VOUT + RS1 RS2 DBOOT IC1 CVCC1 ROV1 CBUS2 CBUS1 DOV ROV2 CEN ENN VCC 1 2 8 7 6 5 IRS254(0,1) RG1 CBOOT DCLAMP CVCC2 M1 L1 3 4 M2 RG2 COUT VOUT - RF RCS ROUT CF EN DEN1 .irf. Page 1 IRS254(0,1)(S)Pb F Alternate application circuit using a single MOSFET IRS254(0,1)...