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FSP3125S50AE Datasheet(PDF) 2 Page - FOSLINK SEMICONDUCTOR CO.,LTD |
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FSP3125S50AE Datasheet(HTML) 2 Page - FOSLINK SEMICONDUCTOR CO.,LTD |
2 / 9 page 150KHZ,2A PWM BUCK DC/DC CONVERTER 2007-3-27 2/9 FSP3125 ABSOLUTE MAXIMUM RATINGS Parameter Value Unit Supply Voltage +24 V On/Off Pin Input Voltage -0.3 to +18 V Feedback Pin Voltage -0.3 to +18 V Output Voltage to Ground -1 V Power Dissipation Internally Limited W Storage Temperature -65 to +150 ℃ Operating Temperature -40 to +125 ℃ Operating Voltage +4.5 to +22 V ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VIN=12V for 3.3V, 5V and adjustable version and VIN=18V for the 12V version. ILOAD = 0.5A) Parameter Symbol Test Conditions Min. Typ. Max. Unit -50 Feedback Bias Current IFB VFB = 1.3V (Adjustable Version Only) -10 -100 nA 127 150 173 Oscillator Frequency Fosc 110 173 kHz Short Circuit Oscillator Frequency FCSP When Current Limit Occur and VFB < 0.5V, TA=25°C 10 30 50 kHz 1.4 Saturation Voltage VSAT IOUT= 2A, No Outside Circuit , VFB = 0V force drive on 1.25 1.5 V Maximum Duty Cycle(On) VFB = 0V force drive on 100 Minimum Duty Cycle(Off) DC VFB =12V force drive off 0 % 3.6 6.9 Current Limit ICL Peak Current No Outside Circuit , VFB = 0V force drive on 3.4 7.5 A Output=0 No Outside Circuit , VFB = 12V force drive off -50 µA Output=-1 Output Leakage Current IL VIN = 22V -30 mA Quiescent Current IQ VFB = 12V force drive off 5 10 mA 200 Standby Quiescent Current ISTBY ON/OFF Pin=5V,VIN = 22V 70 250 µA VIL Low (Regulator ON) 0.6 ON/OFF Pin Logic Input Threshold Voltage VIH High (Regulator OFF) 2.0 1.3 V ON/OFF Pin Input Current IL VLOGIC=0.5V(ON) -5 ON/OFF Pin Logic Input Current IH VLOGIC=2.5V(OFF) -15 µA Thermal Resistance θJC SOP8L Junction to Case 15 Thermal Resistance with Copper Area of Approximately 3 in 2 θJA SOP8L Junction to Ambient 70 ℃ /W |
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