Datasheet TL431, TL431A (Fairchild) - 3

TL431/TL431A Electrical Characteristics
(TA = +25°C, unless otherwise specified)
TL431 TL431A Parameter Symbol Conditions Unit Min. Typ. Max. Min. Typ. Max.
Reference Input Voltage VREF VKA=VREF, IKA=10mA 2.440 2.495 2.550 2.470 2.495 2.520 V Deviation of Reference ΔVREF/ VKA=VREF, IKA=10mA Input Voltage Over- Δ - 4.5 17 - 4.5 17 mV T TMIN≤TA≤TMAX Temperature (Note 1) Ratio of Change in ΔVKA=10V- - - 1.0 -2.7 - -1.0 -2.7 Reference Input Voltage ΔVREF/ IKA VREF to the Change in Δ mV/V VKA =10mA ΔVKA=36V- Cathode Voltage - -0.5 -2.0 - -0.5 -2.0 10V IKA=10mA, Reference Input Current IREF R1=10KΩ,R2=∞ - 1.5 4 - 1.5 4 μA Deviation of Reference IKA=10mA, Input Current Over Full ΔIREF/ΔT R1=10KΩ,R2=∞ - 0.4 1.2 - 0.4 1.2 μA Temperature Range TA =Full Range Minimum Cathode Cur- IKA(MIN) VKA=VREF - 0.45 1.0 - 0.45 1.0 mA rent for Regulation Off - Stage Cathode IKA(OFF) VKA=36V, VREF=0 - 0.05 1.0 - 0.05 1.0 μA Current VKA=VREF, Dynamic Impedance ZKA IKA=1 to 100mA - 0.15 0.5 - 0.15 0.5 Ω (Note 2) f ≥1.0KHz • TMIN= -25 °C, TMAX= +85 °C
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