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TL1431AI Datasheet(PDF) 2 Page - STMicroelectronics |
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TL1431AI Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 8 page ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VKA Cathode to Anode Voltage 37 V IK Continuous Cathode Current Range -100 to +150 mA Iref Reference Input Current Range -0.05 to +10 mA Toper Operating Free-air Temperature Range TL1431C/AC TL1431I/AI -20 to +70 -40 to +105 oC Tstg Storage Temperature Range -65 to +150 oC OPERATING CONDITIONS Symbol Parameter Value Unit VKA Cathode to Anode Voltage Vref to 36 V IK Cathode Current 1 to 100 mA ELECTRICAL CHARACTERISTICS Tamb =25 oC (unless otherwise specified) Symbol Parameter TL1431C TL1431AC 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. 320 3 20 mV ∆V ref ∆T Temperature Coefficient of Reference Input Voltage - (note 2) VKA =Vref,IK = 10mA, Tmin. ≤ Tamb ≤ Tmax. ±13 ±90 ±13 ±90 ppm/ oC ∆Vref ∆VKA Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage - (figure 2) IK = 10mA, ∆VKA = 36V to 3V -2 -1.1 -2 -1.1 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. 0.2 1.2 0.2 1.2 µA Imin Minimum Cathode Current for Regulation - (figure 1) VKA =Vref 0.5 1 0.5 0.6 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 Tempe ra tur e V ref ma x. Vre fmin. Notes : 1. ∆Vref is defined as the difference between the maximum and minimum values obtained over the full temperature range. ∆Vref =Vrefmax. -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| = ∆V KA ∆I K 25 C Te m pe ra ture ma x 2.5V min -n p pm/ C + n ppm / C TL1431 2/8 |
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