Datasheet KA431SA (ON Semiconductor) - 3

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KA431S, KA431SA, KA431SL ELECTRICAL CHARACTERISTICS
(Note 5) Values are at TA = 25°C unless otherwise noted
KA431S KA431SA KA431SL Symbol Parameter Conditions Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
VREF Reference Input VKA = VREF, IKA = 10 mA 2.450 2.500 2.550 2.470 2.495 2.520 2.482 2.495 2.508 V Voltage ΔVREF/ΔT Deviation of Ref- VKA = VREF, IKA = 10 mA, − 4.5 17.0 − 4.5 17.0 − 4.5 17.0 mV erence Input TMIN ≤ TA ≤ TMAX Voltage Over− Temperature ΔVREF/ΔVKA Ratio of Change IKA = ΔVKA = − −1.0 −2.7 − −1.0 −2.7 − −1.0 −2.7 mV/V in Reference 10 mA 10 V − VREF Input Voltage to the Change in ΔVKA = − −0.5 −2.0 − −0.5 −2.0 − −0.5 −2.0 Cathode Voltage 36 V − 10 V IREF Reference Input IKA = 10 mA, − 1.5 4.0 − 1.5 4.0 − 1.5 4.0 mA Current R1 = 10 kW, R2 = ∞ ΔIREF/ΔT Deviation of IKA = 10 mA, − 0.4 1.2 − 0.4 1.2 − 0.4 1.2 mA Reference Input R1 = 10 kW, R2 = ∞ Current Over Full TA = Full Range Temperature Range IKA(MIN) Minimum VKA = VREF − 0.45 1.00 − 0.45 1.00 − 0.45 1.00 mA Cathode Current for Regulation IKA(OFF) Off-Stage VKA = 36 V, VREF = 0 − 0.05 1.00 − 0.05 1.00 − 0.05 1.00 mA Cathode Current ZKA Dynamic VKA = VREF, − 0.15 0.50 − 0.15 0.50 − 0.15 0.50 W Impedance IKA = 1 to 100 mA, f ≥ 1.0 kHz Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 5. TMIN = −25°C, TMAX = +85°C
TEST CIRCUITS
INPUT VKA INPUT VKA IKA IKA R1 IREF KA431S KA431S V V REF R2 REF VKA = VREF (1 + R1/R2) + IREF R1
Figure 3. Test Circuit for VKA = VREF Figure 4. Test Circuit for VKA
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VREF
INPUT VKA IKA(OFF) KA431S
Figure 5. Test Circuit for IKA(OFF) www.onsemi.com 3