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IRU431L Datasheet(PDF) 3 Page - International Rectifier |
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IRU431L Datasheet(HTML) 3 Page - International Rectifier |
3 / 6 page IRU431L / IRU431AL 3 Rev. 1.8 02/20/02 www.irf.com PIN DESCRIPTIONS BLOCK DIAGRAM Figure 2 - Simplified block diagram of the IRU431L. Resistors from the Ref pin to the Cathode pin and to ground form a divider that sets the output voltage. The output of the shunt regulator. A capacitor of 1 mF minimum value must be connected from this pin to Anode pin to insure unconditional stability. Ground pin. This pin must be connected to the lowest potential in the system and all other pins must be at higher potential with respect to this pin. These pins are not connected internally. Note 2: The dynamic impedance when VKA=VREF is de- fined as: Cathode 1.24V Anode Ref + When the device is operating with two external resistors (See figure 3), the total dynamic impedance of the cir- cuit is given by: SOT-23 5-PIN PIN# SOT-23 3-PIN PIN# PIN SYMBOL PIN DESCRIPTION 4 3 5 1, 2 1 2 3 NA Ref Cathode Anode NC ?ZKA0? = DVKA DIK ?ZKA? = = ?ZKA0? 3 oo1 + pp R1 R2 DV DI |
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