Low dropout regulator (LDO) integrated with slew rate intensifier circuit

2013 
The invention relates to a power supply management technology, solves the problem that the output voltage spike of a conventional low dropout regulator is solved through increasing the circuit complexity, reducing the load capacity and increasing the output voltage, and provides a low dropout regulator (LDO) integrated with slew rate intensifier circuit. The technical scheme adopted by the invention is summarized as follows: compared with a conventional LDO, a slew rate intensifier circuit and a compensation capacitor are additionally arranged, the negative phase input end of an error amplifier is connected with a reference voltage source, the positive phase input end of the error amplifier is connected with a resistance feedback circuit, and the output end of the error amplifier is connected with the input end of the slew rate intensifier circuit; the output end of the slew rate intensifier circuit is connected with a grid electrode of a compensating pipe; one end of the compensation capacitor is connected with the positive phase input end of the error amplifier, and the other end of the compensation capacitor is connected with the output end. The LDO integrated with the slew rate intensifier circuit has the benefit that the transient response is improved, and is applicable to the low dropout regulator.
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