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LP2950-2951 Datasheet(PDF) 4 Page - E-Tech Electronics LTD |
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LP2950-2951 Datasheet(HTML) 4 Page - E-Tech Electronics LTD |
4 / 7 page LP2950/2951 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 4 of 7 www.unisonic.com.tw QW-R102-001.L ELECTRICAL CHARACTERISTICS(Cont.) For UTC LP2951 8-Pin Version Only PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT Reference Voltage VREF 1.22 1.235 1.25 V Reference Voltage VREF Over temperature(Note 4) 1.19 1.27 V Feedback pin Bias Current IFB 20 40 nA Reference Voltage Temperature Coefficient VREF(TC) 50 ppm/ °C Feedback Bias Current Temperature Coefficient IFB(TC) 0.1 nA/ °C Error Comparator Output Leakage Current IO(LEAK) VOH=30V 1 μA Output Low Voltage VOL VIN=4.5V, IOL=400μA 250 mV Upper VTHU (Note 3) 3.2 %VO Threshold Voltage Lower VTHL (Note 3) 7.6 %VO Hysteresis VHYS (Note 3) 15 mV Shutdown Input Low VIL Regulator ON 1.3 0.70 Input Logic Voltage High VIH Regulator OFF 2.0 V VSHDN=2.4V 30 50 μA Shutdown Pin Input Current ISHDN VSHDN=30V 450 600 μA Regulator Output Current Shutdown IDFF VSHDN≧2V, VIN≦30V, VOUT=0 Feedback pin tied to 5V Tap. 3 10 μA Note: 1. 2. 3. 4. Additional conditions for 8-pin versions are FB pin tied to 5VTAP, Output tied to Sense (VOUT=5V) and VSHDN≤0.8V . Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. Comparator thresholds are expressed in terms of percentage value of voltage output. VREF≤VOUT≤(VIN-1V), 2.3V≤VIN≤30V, 100μA≤IL≤100mA, TJ≤TJ(MAX) |
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