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TL431AIDT Datasheet(PDF) 3 Page - STMicroelectronics |
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TL431AIDT Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 10 page TL431 3/10 ELECTRICAL CHARACTERISTICS T amb = 25°C (unless otherwise specified) 1) ∆V ref is defined as the difference between the maximum and minimum values obtained over the full temperature range. ∆V ref = Vref max. - Vref min. 2) The dynamic Impedance is definied as ZKA = Symbol Parameter TL431I TL431AI Unit Min. Typ. Max. Min. Typ. Max. Vref Reference Input Voltage VKA = Vref , Ik = 10 mA Tamb = 25°C Tmin ≤Tamb ≤ Tmax 2.44 2.41 2.495 2.55 2.58 2.47 2.44 2.495 2.52 2.55 V ∆V ref Reference Input Voltage Deviation Over- Temperature Range - note 1 VKA = Vref , Ik =10 mA,Tmin≤Tamb≤ Tmax 7 30 7 30 mV Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage Ik = 10mA ∆V KA = 10V to Vref ∆V KA = 36V to 10V -1.4 -1 -2.7 -2 -1.4 -1 -2.7 -2 mV/V Iref Reference Input Current Ik = 10mA, R1 = 10k Ω, R2 = ∞ Tamb = 25°C Tmin ≤Tamb ≤Tmax 1.8 4 6.5 1.8 4 6.5 µA ∆Iref Reference Input Current Deviation Over Temperature Range Ik = 10mA, R1 = 10k Ω, R2 =∞ Tmin ≤Tamb ≤ Tmax 0.8 2.5 0.8 1.2 µA Imin Minimum Cathode Current for Regulation VKA = Vref 0.5 1 0.5 0.7 mA Ioff Off-State Cathode Current 2.6 1000 2.6 1000 nA ZKA Dynamic Impedance note 2 VKA = Vref ,∆ Ik = 1 to100mA, f ≤1kHZ 0.22 0.5 0.22 0.5 Ω ∆Vref ∆Vka ------------ T1 T2 Temperature V ref max. V ref min. ∆VKA ∆IK ----------------- |
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