Patent ID: 7161410

Claim:
A circuit for generating an output voltage (V out ) comprising: a constant voltage control circuit ( 1 ) which receives a voltage supply (V SUPPLY ) and generates the output voltage (V OUT ); a current reduction section ( 2 ) which receives a control voltage (V CONTROL ) and generates a control current (I C ) which produces a change in the output voltage (V OUT ); and a limiter section ( 3 ) which receives a lower and an upper limit voltage (V LIMIT1 , V LIMIT2 ) and blocks or activates the current reduction section ( 2 ) responsive to the control voltage (V CONTROL ); wherein the constant voltage control circuit ( 1 ) further comprises a programmable reference voltage generator ( 10 ) wherein output voltage (V OUT ) can be adjusted via a voltage divider ( 13 , 14 , 15 ); and wherein the voltage divider ( 13 , 14 , 15 ) includes a first ohmic section with two resistors ( 13 , 14 ) and a second ohmic section with one resistor ( 15 ).