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TL431A3 Datasheet(PDF) 2 Page - Cystech Electonics Corp. |
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TL431A3 Datasheet(HTML) 2 Page - Cystech Electonics Corp. |
2 / 6 page CYStech Electronics Corp. Spec. No. : C502A3 Issued Date : 2003.03.26 Revised Date : 2008.10.09 Page No. : 2/6 TL431A3 CYStek Product Specification Functional Block Diagram & Symbol Test Circuits Electrical Characteristics ( Ta=25 °C unless otherwise specified ) Functional Block Diagram : Symbol : Characteristics Symbol Test Conditions Min Typ Max Unit TL431A 2.480 2.495 2.510 TL431B 2.470 2.495 2.520 Reference Input Voltage TL431C VREF VKA=VREF, IK=10mA 2.445 2.495 2.545 V Deviation of Reference Input Voltage Over-Temperature VREF(dev) VKA=VREF, IK=10mA Tmin ≤Ta≤Tmax - 4 17 mV IK=10mA, ΔVKA=10V-VREF - -1.4 -2.7 mV Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage ΔVREF / ΔVKA IK=10mA, ΔKKA=36V-10V - -1.0 -2.0 V Reference Input Current IREF IK=10mA, R1=10k Ω, R2= ∞ - 2 4 μA Deviation of Reference Input Current Over Full Temperature Range IK=10mA, R1=10k Ω, R2= ∞, Ta=Full Range - 0.4 1.2 μA IREF(dev) Minimum Cathode Current for Regulation IK(min) VKA=VREF - 0.4 1.0 mA Off-State Cathode Current IK(off) VKA=36V, VREF=0 - 0.1 1.0 μA Dynamic impedance VKA=VREF, f ≤1.0KHz ZKA - 0.2 0.5 Ω IK=1 to 100mA Fig3. Test Circuit for Off-State Current VZ IN Fig 2. Test Circuit for VZ>VREF Note : VZ=VREF(1+R1/R2)+IREFxR1 VREF R2 IZ IREF IN VZ II Fig1. Test Circuit for VZ=VREF R1 VZ IZ VREF IREF II IN Reference Cathode Anode Cathode Anode + - VREF Reference |
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