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TL431ACDT Datenblatt(PDF) 5 Page - STMicroelectronics |
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TL431ACDT Datenblatt(HTML) 5 Page - STMicroelectronics |
5 / 13 page TL431 Electrical Characteristics 5/13 Table 4. Tamb = 25°C (unless otherwise specified) 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 2.49 5 2.55 2.58 2.47 2.44 2.49 5 2.52 2.55 V ∆V ref Reference Input Voltage Deviation Over Temperature Range (1) VKA = Vref , Ik =10 mA, Tmin≤Tamb≤ Tmax 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. 730 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 0.82.5 0.81.2 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 (2) VKA = Vref , ∆ Ik = 1 to100mA, f ≤1kHZ 2. The dynamic Impedance is definied as |ZKA| = 0.22 0.5 0.22 0.5 Ω T1 T2 Temperature V ref max. V ref min. ∆Vref ∆Vka ------------ ∆VKA ∆IK ----------------- |
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