Low drop-out voltage regulator with high-performance linear and load regulation
AssigneeHoltek Semiconductor Inc.
InventorMing-Hong Jian
Life of this patent
Estimating the term…
Abstract
A low drop-out voltage regulator with high-performance linear and load regulation, comprising: a reference voltage circuit, capable of providing a reference voltage; a differential amplifier; a power device, capable of driving a load resistor; a feedback circuit, disposed between the differential amplifier and the power device so that the differential amplifier outputs a correction voltage after the reference voltage and a feedback voltage across the feedback circuit; and a voltage buffer for frequency compensation, disposed between the differential amplifier and the power device, the voltage buffer comprising a complementary type buffer.
Claims5
A low drop-out voltage regulator with high-performance linear and load regulation, comprising:
- a reference voltage circuit, capable of providing a reference voltage;
- a differential amplifier;
- a power device, capable of driving a load resistor;
- a feedback circuit, disposed between the differential amplifier and the power device so that the differential amplifier outputs a correction voltage after the reference voltage and a feedback voltage across the feedback circuit;
- and
- a voltage buffer for frequency compensation, disposed between the differential amplifier and the power device, the voltage buffer comprising a complementary type buffer, wherein the complementary type buffer comprises a p-type buffer and an n-type buffer and each the p-type buffer and the n-type buffer is driven by a bias current provided by at least two current mirrors respectively.
A low drop-out voltage regulator with high-performance linear and load regulation, comprising:
- a reference voltage circuit, capable of providing a reference voltage;
- a differential amplifier;
- a power device, capable of driving a load resistor;
- a feedback circuit, disposed between the differential amplifier and the power device so that the differential amplifier outputs a correction voltage after the reference voltage and a feedback voltage across the feedback circuit;
- and
- a voltage buffer for frequency compensation, disposed between the differential amplifier and the power device, the voltage buffer comprising a complementary type buffer, wherein the complementary type buffer comprises a p-type buffer and an n-type buffer and each the p-type buffer and the n-type buffer is driven by a bias current provided by a current source respectively.
Dependencies are inferred from the claim text.