The invention relates to a current regulator having the following
features: a first semiconductor body (1; 1') having a first and second
terminal contact (11, 12), a transistor (T) having a control terminal and
a load path, which is integrated in the semiconductor body (1; 1') and
the load path of which runs between the terminal contacts (11, 12) of the
semiconductor body, a current measuring resistor (22), which is at least
partly formed by a section of the load path of the transistor, an
evaluation and drive circuit (3), which is connected to the current
measuring resistor (22) and which is designed to drive the transistor
depending on a voltage across the measuring resistor (22).