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TL431AW5-7 Folha de dados(PDF) 3 Page - Diodes Incorporated |
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TL431AW5-7 Folha de dados(HTML) 3 Page - Diodes Incorporated |
3 / 14 page TL431/TL432 ADJUSTABLE PRECISION SHUNT REGULATOR TL431/432 Document number: DS35050 Rev. 2 - 2 3 of 14 www.diodes.com September 2010 © Diodes Incorporated Electrical Characteristics (TA = +25°C, unless otherwise noted) Symbol Parameter Test Conditions Min Typ. Max Unit VREF Reference voltage VKA = VREF, IKA = 10mA TL431A 2.470 2.495 2.520 V TL431B 2.482 2.495 2.507 V VDEV Deviation of reference voltage over full temperature range (Note 5) VKA = VREF, IKA = 10mA TA = 0 to 70 oC 6 16 mV TA = -40 to 85 oC 14 34 mV TA = -40 to 125 oC 14 34 mV ΔVREF ΔVKA Ratio of the change in reference voltage to the change in cathode voltage IKA = 10mA VKA = 10V to VREF -1.4 -2.7 mV/V VKA = 36V to 10V -1 -2 mV/V IREF Reference input current IKA = 10mA, R1 = 10KΩ, R2 = ∞ 1 4 μA ΔIREF IREF deviation over full temperature range (Note 5) IKA = 10mA, R1 = 10K Ω, R2 = ∞ TA = 0 to 70 oC 0.8 1.2 μA TA = -40 to 85 oC 0.8 2.5 μA TA = -40 to 125 oC 0.8 2.5 μA IKA(MIN) Minimum cathode current for regulation VKA = VREF 0.4 0.7 mA IKA(OFF) Off-state current VKA = 36V, VREF = 0V 0.05 0.5 μA |Z KA| Dynamic output impedance (Note 6) VKA = VREF, f = 0Hz 0.2 0.5 Ω θJA Thermal Resistance Junction to Ambient SOT23 380 oC/W SOT25 250 oC/W Notes: 5. Deviation of VDEV, and ΔIREF are defined as the maximum variation of the values over the full temperature range. The average temperature coefficient of the reference input voltage αV REF is defined as: Where: T2 – T1 = full temperature change. αVREF can be positive or negative depending on whether the slope is positive or negative. Notes: 6. The dynamic output impedance, RZ, is defined as: When the device is programmed with two external resistors R1 and R2, the dynamic output impedance of the overall circuit, is defined as: = T2 – T1 αV REF V DEV V REF @ 25ºC X 10 6 ppm/ºC = T2 – T1 αV REF V DEV V REF @ 25ºC X 10 6 ppm/ºC Vmax Vmin T1 T2 V DEV = Vmax - Vmin Temperature Vmax Vmin T1 T2 V DEV = Vmax - Vmin Temperature = Z KA ΔV KA ΔI KA = Z KA ΔV KA ΔI KA = Z’ ΔV ΔI Z KA 1 + R1 R2 ≈ = Z’ ΔV ΔI = Z’ ΔV ΔI Z KA 1 + R1 R2 Z KA 1 + R1 R2 ≈ |
Nº de peça semelhante - TL431AW5-7 |
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Descrição semelhante - TL431AW5-7 |
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