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TL1431ID Datasheet(PDF) 3 Page - STMicroelectronics |
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TL1431ID Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 8 page ELECTRICAL CHARACTERISTICS Tamb =25 oC (unless otherwise specified) Symbol Parameter TL1431I TL1431AI Unit Min. Typ. Max. Min. Typ. Max. Vref Reference Input Voltage - (figure 1) VKA =Vref,IK = 10mA Tamb =25 oC 2.490 2.500 2.510 2.493 2.500 2.507 V ∆Vref Reference Input Voltage Deviation Over Temperature Range - (figure 1, note1) VKA =Vref, IK= 10mA, Tmin. ≤ Tamb ≤ Tmax. 730 7 30 mV ∆Vref ∆T Temperature Coefficient of Reference Input Voltage - (note 2) VKA =Vref,IK = 10mA, Tmin. ≤ Tamb ≤ Tmax. ±22 ±100 ±22 ±100 ppm/ oC ∆Vref ∆VKA Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage - (figure 2) IK = 10mA, ∆VKA = 36 to 3V -1.1 -2 -1.1 -2 mV/V Iref Reference Input Current - (figure 2) IK = 10mA, R1 = 10k Ω,R2 = ∞ Tamb =25 oC Tmin. ≤ Tamb ≤ Tmax. 1.5 2.5 3 1.5 2.5 3 µA ∆Iref Reference Input Current Deviation Over Temperature Range - (figure 2) 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 - (figure 1, note 3) VKA =Vref, ∆IK = 1 to 100mA, f ≤ 1kHz 0.2 0.5 0.2 0.5 Ω T1 T2 Tempera ture Vre fmax. Vref min. Notes : 1. ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. ∆Vref =Vref max. -Vref min 2. The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature limits whithin which the reference voltage is guaranteed. 3. The dynamic Impedance is defined as |ZKA| = ∆VKA ∆IK 25 C Te m pe ra ture ma x 2.5V min -n p pm / C + n ppm / C TL1431 3/8 |
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