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TL1431ACDT Datasheet(PDF) 5 Page - STMicroelectronics |
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TL1431ACDT Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 16 page ![]() TL1431 Electrical characteristics 5/16 Table 4. Tamb = 25°C (unless otherwise specified) Symbol Parameter TL1431I TL1431AI Unit Min. Typ. Max. Min. Typ. Max. Vref Reference input voltage - see Figure 4 VKA = Vref , Ik = 10 mA 2.490 2.500 2.510 2.493 2.500 2.507 V ΔVref Reference input voltage deviation over temperature range (1) - see Figure 4 VKA = Vref, Ik = 10 mA, Tmin ≤ Tamb ≤ Tmax 730 7 30 mV Temperature coefficient of reference input voltage(2) VKA = Vref, Ik = 10 mA, Tmin ≤ Tamb ≤ Tmax ±22 ±100 ±22 ±100 ppm/°C Ratio of change in reference input voltage to change in cathode to anode voltage - see Figure 5 Ik = 10mA - ΔVKA = 36V to 3V -2 -1.1 -2 -1.1 mV/V Iref Reference input current Ik = 10mA, R1 = 10kΩ, R2 = ∞ Tmin ≤ Tamb ≤ Tmax 1.5 2.5 3 1.5 2.5 3 µA ΔIref Reference input current deviation over temperature range Ik = 10mA, R1 = 10kΩ, R2 =∞, Tmin ≤ Tamb ≤ Tmax 0.5 1 0.8 1.2 µA Imin Minimum cathode current for regulation - see Figure 4 VKA = Vref 0.5 1 0.5 0.7 mA Ioff Off-state cathode current - see Figure 6 180 500 180 500 nA ⏐ ZKA⏐ Dynamic impedance (3) VKA = Vref , ΔIk= 1 to100mA, f ≤ 1kHz 0.20.5 0.20.5 Ω 1. See Reference input voltage deviation over temperature range in Section 4: Parameter definitions on page 9. 2. See Temperature coefficient of reference input voltage in Section 4: Parameter definitions on page 9. 3. See Dynamic impedance in Section 4: Parameter definitions on page 9. ΔVref ΔT ---------------- ΔVref ΔVka ---------------- |
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