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TL431AIZ Datenblatt(PDF) 4 Page - STMicroelectronics |
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TL431AIZ Datenblatt(HTML) 4 Page - STMicroelectronics |
4 / 15 page Electrical characteristics TL431 4/15 3 Electrical characteristics Table 3. Tamb = 25°C (unless otherwise specified) Symbol Parameter TL431C TL431AC Unit Min. Typ. Max. Min. Typ. Max. Vref Reference input voltage VKA = Vref , Ik = 10 mA, Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 2.44 2.423 2.495 2.55 2.567 2.47 2.453 2.495 2.52 2.537 V ΔVref Reference input voltage deviation over temperature range (1) VKA = Vref, Ik = 10 mA, Tmin ≤ Tamb ≤ Tmax 317 3 15 mV Ratio of change in reference input voltage to change in cathode to anode voltage Ik = 10mA - ΔVKA = 10V to Vref ΔVKA = 36V to 10V -2.7 -2 -1.4 -1 -2.7 -2 -1.4 -1 mV/V Iref Reference input current Ik = 10mA, R1 = 10kΩ, R2 = ∞ Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 1.8 4 5.2 1.8 4 5.2 µA ΔIref Reference input current deviation over temperature range Ik = 10mA, R1 = 10kΩ, R2 =∞ Tmin ≤ Tamb ≤ Tmax 0.4 1.2 0.4 1.2 µA Imin Minimum cathode current for regulation VKA = Vref 0.5 1 0.5 0.6 mA Ioff Off-state cathode current 2.6 1000 2.6 1000 nA ⏐ ZKA⏐ Dynamic impedance (2) VKA = Vref , Δ Ik = 1 to100mA, f ≤ 1kHZ 0.22 0.5 0.22 0.5 Ω 1. See definition of Reference input voltage deviation over temperature range. 2. The dynamic impedance is defined as | ZKA| = ΔVref ΔVka ------------ ΔV KA I k Δ --------------- |
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