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LM431BIZX Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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LM431BIZX Datasheet(HTML) 3 Page - Fairchild Semiconductor |
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3 / 11 page  © 2003 Fairchild Semiconductor Corporation www.fairchildsemi.com LM431A / LM431B / LM431C Rev. 1.2.0 3 Electrical Characteristics Values are at TA = 25°C unless otherwise noted. Note: 1. LM431xC: TMIN = -25°C, TMAX = +85°C. LM431xI: TMIN = -40°C, TMAX = +85°C. Symbol Parameter Conditions LM431A LM431B LM431C Unit Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. VREF Reference Input Voltage VKA = VREF, IKA = 10 mA 2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508 V ΔVREF/ ΔT Deviation of Reference Input Voltage Over- Temperature VKA = VREF, IKA =10 mA TMIN ≤ TA ≤ TMAX (1) 4.5 17.0 4.5 17.0 4.5 17.0 mV ΔVREF/ ΔVKA Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage IKA = 10 mA ΔVKA = 10V-VREF -1.0 -2.7 -1.0 -2.7 -1.0 -2.7 mV / V ΔVKA = 36V-10V -0.5 -2.0 -0.5 -2.0 -0.5 -2.0 IREF Reference Input Current IKA = 10 mA, R1 =10 k Ω, R2 = ∞ 1.5 4.0 1.5 4.0 1.5 4.0 μA ΔIREF / ΔT Deviation of Reference Input Current Over Full Temperature Range IKA = 10 mA, R1 = 10 k Ω, R2 = ∞ TA = Full Range 0.4 1.2 0.4 1.2 0.4 1.2 μA IKA(MIN) Minimum Cathode Cur-rent for Regulation VKA = VREF 0.45 1.00 0.45 1.00 0.45 1.00 mA IKA(OFF) Off - Stage Cathode Current VKA = 36 V, VREF = 0 0.05 1.00 0.05 1.00 0.05 1.00 μA ZKA Dynamic Impedance VKA = VREF, IKA =1 to 100 mA f ≥ 1.0 kHz 0.15 0.50 0.15 0.50 0.15 0.50 Ω |
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