Temperature-compensated voltage regulator
First Claim
1. A temperature-compensated voltage regulator, which comprises:
- voltage buffer means having a high-voltage input, a control input and a low-voltage output;
voltage generator means for generating a reference voltage and having a first terminal coupled to the low-voltage output of said voltage buffer means and a second terminal, said voltage generator means comprising a series connection of a zener diode and at least one p-n junction diode;
current mirror means having an input coupled to said second terminal, an output coupled to the control input of said voltage buffer means, and a common terminal; and
resistive means for coupling said current mirror output to the low-voltage output of said voltage buffer means, a temperature-compensated, regulated output voltage being generated during operation between said first terminal and said common terminal.
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Accused Products
Abstract
A temperature-compensated voltage regulator includes a field effect transistor voltage buffer which receives a high-voltage input and provides a low-voltage output, and a voltage generator having a series connection of a zener diode and at least one p-n junction diode for generating a reference voltage. The voltage generator is coupled between the low-voltage output of the voltage buffer and the input of a current mirror, with the output of the current mirror being coupled to the gate electrode of the field effect transistor in the voltage buffer. Additionally, the output of the current mirror is coupled to the low-voltage output of the voltage buffer by a resistor. The resulting voltage regulator circuit features high performance in a simple, economical configuration.
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Citations
6 Claims
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1. A temperature-compensated voltage regulator, which comprises:
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voltage buffer means having a high-voltage input, a control input and a low-voltage output; voltage generator means for generating a reference voltage and having a first terminal coupled to the low-voltage output of said voltage buffer means and a second terminal, said voltage generator means comprising a series connection of a zener diode and at least one p-n junction diode; current mirror means having an input coupled to said second terminal, an output coupled to the control input of said voltage buffer means, and a common terminal; and resistive means for coupling said current mirror output to the low-voltage output of said voltage buffer means, a temperature-compensated, regulated output voltage being generated during operation between said first terminal and said common terminal. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification