IRS2541STRPBF

Data Sheet No. PD60293 Not recommended for new design IRS254(0,1)(S)PbF LED BUCK REGULATOR CONTROL IC Description Features 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. • 200 V (IRS2540) and 600 V (IRS2541) half bridge driver • Micropower startup (VENTH+ mA IFB = 1 V Duty Cycle = 50% f = 50 kHz V ICC = 10 mA Floating Supply Characteristics IQBS0 Quiescent VBS supply current --- 1.0 2.0 IQBS1 Quiescent VBS supply current --- 2.0 3.0 VBSUV+ VBS supply undervoltage positive going threshold 6.5 7.5 8.5 VBSUV- VBS supply undervoltage negative going threshold 6.0 7.0 8.0 Offset supply leakage current --- 1 50 ILK mA VHO = VS IFB = 0 V V µA IRS2540:VB=VS=200 V IRS2541:VB=VS=600 V Current Control Operation VENNTH+ ENN pin positive threshold 2.5 2.7 3.0 VENNTH- ENN pin negative threshold 1.7 2.0 2.3 0.5 V voltage reference (die level test) 490 500 510 IFB pin threshold 455 500 540 --- 500 --- kHz V V0.5 VIFBTH f Maximum frequency V mV Gate Driver Output Characteristics www.irf.com VOL Low level output voltage (HO or LO) --- COM --- VHL High level output voltage (HO or LO) --- VCC --- tr Turn-on rise time --- 50 120 tf Turn-off fall time --- 30 50 IO+/- Output source/sink short circuit pulsed current --- 0.5/0.7 --- DT Deadtime --- 140 --- tLO,ON Delay between VIFB>VIFBTH and LO turn-on --- 320 --- tLO,OFF Delay between VIFB