Bandgap reference - LM109/309 - 5V - Voltage regulator - first monolithic high power regulator скачать в хорошем качестве

Bandgap reference - LM109/309 - 5V - Voltage regulator - first monolithic high power regulator

This video talks about the first monolithic high-power voltage regulator, designed by Bob Widlar at National Semicondactor, in 1969. This is a three terminals linear regulator providing a fixed 5 Volt output, with 200mA or 1A output current. This bipolar device was housed in a TO-5 or TO-3 Can package. In the late 1960s, many companies were designing IC voltage regulators and there was a perceived demand for a monolithic device. But the big problem was including the power transistor in the monolithic die, with all the other circuitry. No one belived it possible, including Widlar, apparentely, who, in June 1969, wrote a paper in IEEE, where he laid out the case against monolithic voltage regulators. Then, in February 1970, he presented another paper at ISSCC, where he published the circuit of the LM109, the first monolithic high-power voltage regulator. The solution, of course, was his bandgap voltage reference, which allowed the reference to coexist with the wide temperature swings caused by the integrated power transistor. Bandgap reference:    • bandgap reference - voltage reference...   Current Mirror:    • BJT Current Mirror Basic Principle   feedback compensation:    • Feedback stability  - feedback compen...   negative feedback:    • feedback amplifier - negative feedbac...   Miller effect:    • Miller effect made easy - Miller theo...   Bibliography J.S. Brugler, "Silicon Transistor Biasing for Linear Collector Current Temperature Dependence, " IEEE Journal of Solid State Circuits, pp. 57-58, June, 1967. R.J. Widlar, "Some Circuit Design Techniques for Linear Integrated Circuits," IEEE Trans, on Circuit Theory, Vol. XII, pp. 586-590, December, 1965. R.J. Widlar, "Design of Monolithic Linear Circuits, " Handbook of Semiconductor Electronics, Chapter X, pp. 10.1-10.32, LM109/LM309 Data-sheet , TI.