The LM105-An Improved Positive Regulator
R.J. Widlar, Apartado Postal · 1995
IC voltage regulators are seeing rapidly increasing usage. The LM100, one of the first, has already been widely accepted. Designed for versatility, this circuit can be used as a linear regulator, a switching regulator, a shunt regulator, or even a current regulator. The output voltage can be set between 2V and 30V with a pair of external resistors, and it works with unregulated input voltages down to 7V. Dissipation limitations of the IC package restrict the output current to less than 20 mA, but external transistors can be added to obtain output currents in excess of 5A. The LM100 and an extensive description of its use in many practical circuits are described in References 1–3.