Basic Voltage Regulating Circuit of TL431

Published:2011/8/3 6:45:00 Author:Michel | Keyword: Basic Voltage, Regulating Circuit | From:SeekIC

Picture a,b,c are basic voltage regulating circuit of TL431.TL431is composed of reference voltage and error amplifier.And it has the function of variable voltage regulating tube.It can be used as voltage regulating tube ,reference voltage and auxiliary circuit of power supply such as remote control ,overvoltage and multi-output circuits.It can also be used as simple control circuit current-limiting circuit of series regulator and its application is wide.Good voltage UREF temperature characteristic,fast connection and cuttoff,1~100mA absorbing current,low output noise and low output resistance are features of the device. The picture (a) is simple parallel regulator circuit of TL431 and the output voltage U。=[(1+RRP1/R2)]UREF.In the formula,UREF is the reference voltage of TL431.



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