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LM2954L-S08-T Scheda tecnica(PDF) 6 Page - E-Tech Electronics LTD |
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LM2954L-S08-T Scheda tecnica(HTML) 6 Page - E-Tech Electronics LTD |
6 / 7 page LM2954 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 6 of 7 www.unisonic.com.tw QW-R102-002.K ELECTRICAL CHARACTERISTICS(Cont.) LM2954-ADJ FOR 8-PIN VERSION ONLY PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Reference Voltage VREF 1.22 1.235 1.25 V Reference Voltage VREF VREFVOUT(VIN-1V), 2.3V VIN18V, 100μA IL100mA, TJTJMAX 1.19 1.27 V Feedback Pin Bias Current IB(FB) 20 40 nA Reference Voltage Temperature Coefficient TCVREF 50 ppm/°C Feedback Bias Current Temperature Coefficient TCIO 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 Threshold Voltage VTHD(UP) (Note 3) 3.2 %VOUT Lower Threshold Voltage VTHD(LOW) (Note 3) 7.6 %VOUT Hysteresis VHYS (Note 3) 15 mV SHUTDOWN INPUT Input Logic Voltage VI(LOG) Low (Regulator ON) 1.3 0.70 V High (Regulator OFF) 2.0 Shutdown Pin Input Current II(SHDN) VSHDN=2.4V 30 50 μA VSHDN=30V 450 600 μA Regulator Output Current Shutdown IO(SHDN) VSHDN≧2V,VIN≦30V, VOUT=0, Feedback pin tied to 5V Tap. 3 10 μA Note: 1. Additional conditions for 8-pin versions are feedback tied to 5V Tap an Output tied to Output Sense (VOUT=5V) and VSHDN≦0.8V. 2. 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. 3. Comparator thresholds are expressed in terms of percentage value of voltage output. |
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