| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage regulator circuit which satisfies all of an operation voltage range, an input stability, a power supply rejection ratio, and an output temperature coefficient. <P>SOLUTION: A voltage regulator circuit for outputting a stable and high-precision voltage includes a first stage LDO circuit and a second stage LDO circuit, and operates the second stage LDO circuit to generate a constant-voltage with an output of the first stage LDO circuit used as a power source, in which the first stage LDO circuit is a circuit using depletion MOS, and the second stage LDO circuit is an AMP type BGR circuit. <P>COPYRIGHT: (C)2012,JPO&INPIT |
