Integrable shunt regulator

Claim 1

An integrable shunt regulator, comprising: two connection terminals to be connected between poles of a supply voltage source; a controllable semiconductor component having a control input and having a load path connected to said two connection terminals; a differential amplifier having first and second inputs and having an output connected to the control input of said controllable semiconductor component; first and second transistors having collector terminals connected to one of said connection terminals; a first resistor; the emitter terminal of said first transistor being connected to said first input of said differential amplifier and being connected through said first resistor to the other of said connection terminals; a series circuit of second and third resistors having a connection node connected to said second input of said differential amplifier; the emitter terminal of said second transistor being connected through said series circuit of said second and third resistors to the other of said connection terminals; and n sequentially numbered additional transistors series connected between the base and collector terminals of said first and second transistors, said n additional transistors including at least a first, and a second additional transistor, said n additional transistors each having a base, an emitter and a collector terminal, forming a band gap voltage reference; the emitter terminal of each of said additional transistors numbered greater than one being connected to the base terminal of a preceding next lower numbered transistor, and the highest numbered transistor having its collector and base connected to each other and the collector terminal of each of said additional transistors being connected to said one connection terminal.