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TL1431AI 데이터시트(PDF) 5 Page - STMicroelectronics |
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TL1431AI 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 13 page TL1431 Electrical Characteristics 5/13 Table 4. Tamb = 25°C (unless otherwise specified) Symbol Parameter TL1431I TL1431AI Unit Min. Typ. Max. Min. Typ. Max. Vref Reference Input Voltage - figure 1 VKA = Vref , Ik = 10 mA 2.490 2.500 2.510 2.493 2.500 2.507 V ∆V ref Reference Input Voltage Deviation Over Temperature Range (1) - figure 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 Temperature Coefficient of Reference Input Voltage (2) VKA = Vref, Ik = 10 mA, Tmin ≤Tamb ≤ Tmax 2. The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits within which the reference is guaranteed. ±22 ±100 ±22 ±100 ppm/°C Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage - figure 2 Ik = 10mA - ∆V KA = 36V to 3V -1.1 2 -1.1 2 mV/V Iref Reference Input Current Ik = 10mA, R1 = 10k Ω, R2 = ∞ Tmin ≤Tamb ≤Tmax 1.5 2.5 3 1.5 2.5 3 µA ∆I ref Reference Input Current Deviation Over Temperature Range Ik = 10mA, R1 = 10k Ω, R2 =∞ Tmin ≤Tamb ≤ Tmax 0.5 1 0.8 1.2 µA Imin Minimum Cathode Current for Regulation - figure 1 VKA = Vref 0.5 1 0.5 0.7 mA Ioff Off-State Cathode Current - figure 3 180 500 180 500 nA ⏐ZKA⏐ Dynamic Impedance (3) VKA = Vref , ∆ Ik = 1 to100mA, f ≤1kHZ 3. The dynamic Impedance is definied as |ZKA| = 0.2 0.5 0.2 0.5 Ω T1 T2 Temperature V ref max. V ref min. ∆Vref ∆T ---------------- Temperature 25°C Max 2.5V min -n ppm/°C +n ppm /°C ∆Vref ∆Vka ---------------- ∆VKA ∆IK ----------------- |
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