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TL431AI Datasheet(PDF) 4 Page - NXP Semiconductors |
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TL431AI Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 16 page Philips Semiconductors Product specification TL431C, TL431AC, TL431I, TL431AI, LM431AC Adjustable precision shunt regulators 1997 Feb 25 4 DC ELECTRICAL CHARACTERISTICS 25 °C free-air temperature, unless otherwise stated. TEST LIMITS SYMBOL PARAMETER TEST CKT TEST CONDITIONS TL431AC TL431C/LM431AC UNIT CKT MIN TYP MAX MIN TYP MAX VREF Reference input voltage Fig. 3 VKA = VREF, IK = 10mA 2470 2495 2520 2440 2495 2550 mV VREF(dev) Deviation of reference input voltage over full temperature range3 Fig. 3 VKA = VREF, IK = 10mA, Tamb = full range2 4 15 4 17 mV DV REF Ratio of change in reference input voltage to the change Fig 4 I = 10mA ∆VKA = 10V – VREF –1.4 –2.7 –1.4 –2.7 mV/V REF DV KA in ut voltage to the change in cathode voltage Fig. 4 IK = 10mA ∆VKA = 36V – 10V –1 –2 –1 –2 mV/V IREF Reference input current Fig. 4 IK = 10mA, R1 = 10kΩ, R2 = ∞ 2 4 2 4 µA IREF(dev) Deviation of reference input current over full temperature range3 Fig. 4 IK = 10mA, R1 = 10kΩ, R2 = ∞, Tamb = full range2 0.8 1.2 0.4 1.2 µA IMIN Minimum cathode current for regulation Fig. 3 VKA = VREF 0.4 0.6 0.4 1 mA IOFF Off-state cathode current Fig. 5 VKA = 36V, VREF = 0 0.1 0.5 0.1 1 µA | ZKA | Dynamic impedance4 Fig. 3 VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz 0.2 0.5 0.2 0.5 Ω 25 °C free-air temperature, unless otherwise stated. TEST LIMITS SYMBOL PARAMETER TEST CKT TEST CONDITIONS TL431AI TL431I UNIT CKT MIN TYP MAX MIN TYP MAX VREF Reference input voltage Fig. 3 VKA = VREF, IK = 10mA 2470 2495 2520 2440 2495 2550 mV VREF(dev) Deviation of reference input voltage over full temperature range3 Fig. 3 VKA = VREF, IK = 10mA, Tamb = full range2 5 25 5 30 mV DV REF Ratio of change in reference input voltage to the change Fig 4 I = 10mA ∆VKA = 10V – VREF –1.4 –2.7 –1.4 –2.7 mV/V REF DV KA in ut voltage to the change in cathode voltage Fig. 4 IK = 10mA ∆VKA = 36V – 10V –1 –2 –1 –2 mV/V IREF Reference input current Fig. 4 IK = 10mA, R1 = 10kΩ, R2 = ∞ 2 4 2 4 µA IREF(dev) Deviation of reference input current over full temperature range3 Fig. 4 IK = 10mA, R1 = 10kΩ, R2 = ∞, Tamb = full range2 0.8 2.5 0.8 2.5 µA IMIN Minimum cathode current for regulation Fig. 3 VKA = VREF 0.4 0.7 0.4 1 µA IOFF Off-state cathode current Fig. 5 VKA = 36V, VREF = 0 0.1 0.5 0.1 1 µA | ZKA | Dynamic impedance4 Fig. 3 VKA = VREF, IK = 1mA to 100mA, f ≤ 1kHz 0.2 0.5 0.2 0.5 Ω NOTES: 2. Full temperature range is –40 °C to +85°C for the TL431I and TL431AI, and 0°C to +70°C for the TL431C and TL431AC. 3. The deviation parameters VREF(dev) and IREF(dev) are defined as the differences between the maximum and minimum values obtained over the rated termperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as: | aV REF | ppm deg C + V REF(dev) V REF at 25oC @ 106 DT amb VREF(dev) Max VREF Min VREF ∆Tamb where ∆Tamb is the rated operating free-air temperature range of the device. |
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