 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SI9124 Datasheet(PDF) 4 Page - Vishay Siliconix |
|
||||||||||||||||||||||||||||||
SI9124 Datasheet(HTML) 4 Page - Vishay Siliconix |
|
|
4 / 16 page 
Si9124 Vishay Siliconix New Product www.vishay.com 4 Document Number: 72099 S-03638—Rev. B, 20-Mar-03 SPECIFICATIONSa Limits - 40 to 85 _C Test Conditions Unless Specified CS1 = CS2 = 0 V, fNOM = 500 kHz, VIN = 48 V VINDET = 4.8 V; 10 V v VCC v 13.2 V, VCC2 = VCC Parameter Unit Maxb Typc Minb Test Conditions Unless Specified CS1 = CS2 = 0 V, fNOM = 500 kHz, VIN = 48 V VINDET = 4.8 V; 10 V v VCC v 13.2 V, VCC2 = VCC Symbol PWM Operation Duty Cyclee DMAX fOSC = 500 kHz VEP = 0 V 90 92 95 % Duty Cyclee DMIN fOSC = 500 kHz VEP = 1.85 V t15 % Pre-Regulator Input Voltage (Continuous) VIN IIN = 10 mA 72 V Input Leakage Current ILKG VIN = 72 V, VCC u VREG 10 mA Regulator Bias Current IREG1 VIN = 72 V, VINDET t VSD 86 200 mA Regulator Bias Current IREG2 VIN = 72 V, VINDET u VREF 4.5 7.5 mA Pre-Regulator Drive Capacility ISTART VCC t VREG 20 mA V PR l t T Off VREG1 VINDET u VREF 7.4 9.1 10.4 VCC Pre-Regulator Turn Off Threshold Voltage VREG1 VINDET u VREF TA = 25_C 8.5 9.1 9.7 Threshold Voltage VREG2 VINDET = 0 V 9.2 V Undervoltage Lockoutd VUVLO VCC Rising 7.15 8.6 9.8 V Undervoltage Lockoutd VUVLO VCC Rising TA = 25_C 8.1 8.6 9.3 VUVLO Hysteresis VUVLOHYS 0.5 Soft-Start Soft-Start Current Output ISS1 0 t VSS t 2 Vbe 12 20 28 mA Soft-Start Current Output ISS2 2 Vbe t VSS t 4.8 V 60 100 200 mA Soft-Start Completion Voltage VSS_COMP Normal Operation 7.35 8.1 8.85 V Shutdown VINDET Shutdown FN VSD VINDET Rising 350 550 720 mV VINDET Hysteresis VINDET 200 mV VINDET Input Threshold Voltages VINDET - VIN Under Voltage VUV VINDET Rising 3.13 3.3 3.46 V VINDET Hysteresis VINDET 0.3 V Over Temperature Protection Activating Temperature TJ Increasing 160 _C De-Activating Temperature TJ Decreasing 130 _C Converter Supply Current (VCC) Shutdown ICC1 Shutdown, VINDET = 0 V 50 140 350 mA Switching Disabled ICC2 VINDET t VREF 1.8 2.8 3.8 Switching w/o Loadf ICC3 VINDET u VREF, fNOM = 500 kHz 3.0 4.4 6.8 Switching with CLOAD ICC4 VCC = 12 V, OUTA = OUTB = 3 nF, CSEC_SYNC = 0.3 nF 15.2 mA VCC Hiccup Current IHCUP CS2 - CS1 = 200 mV, COUTA = COUTB = 3 nF CSEC_SYNC = 0.3 nF 4.3 |
English ▼
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
