TL431

TL431 Programmable Precision Reference Features: • Programmable output Voltage to 36 V • Low dynamic output impedance • Sink current capability of 1 to 100 mA • Low output noise voltage • Fast turn on response 1. Reference 2.Cathode 3. Anode SOT-23 Plastic Package Absolute Maximum Ratings (Ta = 25 OC, unless otherwise noted.) Parameter Symbol Value Unit Cathode Voltage VKA 37 V Cathode Current Range (Continuous) IKA - 100 to + 150 mA Reference Input Current Range IREF - 0.05 to + 10 mA Power Dissipation PD 350 mW Operating Temperature Range Topr - 25 to + 85 O Tj 150 O Tstg - 65 to + 150 O Junction Temperature Storage Temperature Range Recmmended Operating Conditions Parameter C C C Symbol Min. Max. Unit Cathode Voltage VKA VREF 36 V Cathode Current IKA 1 100 mA Characteristics at Ta = 25 OC Parameter Reference Input Voltage 0.5% at VKA = VREF, IKA = 10 mA Deviation of Reference Input Voltage Over Temperatue at VKA = VREF, IKA = 10 mA, - 25 OC ≤ Ta ≤ + 85 OC Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage at IKA = 10 mA ∆VKA = 10 V to VREF ∆VKA = 36 V to 10 V Reference Input Current at IKA = 10 mA, R1 = 10 KΩ, R2 = ∞ Deviation of Reference Input Current Over Full Temperatue at IKA = 10 mA, R1 = 10 KΩ, R2 = ∞, - 25 OC ≤ Ta ≤ + 85 OC Minimum Cathode Current for Regulation at VKA = VREF Off-Stage Cathode Current at VKA = 36 V, VREF = 0 Dynamic Impedance at VKA = VREF, IKA = 1 to 100 mA, f ≤ 1 KHz Symbol Min. Typ. Max. Unit VREF 2.487 2.50 2.513 V ∆VREF /∆T - 4.5 17 mV - -1.0 -0.5 -2.7 -2 mV/V IREF - 1.5 4 μA ∆IREF/∆T - 0.4 1.2 μA IKA(min) - 0.45 1 mA IKA(OFF) - 0.05 1 μA ZKA - 0.15 0.5 Ω ∆VREF/∆ VKA TL431