Low-power-consumption and low-drop-out voltage regulator capable of performing transient state response
A voltage regulator, transient response technology, applied in instruments, regulating electrical variables, control/regulating systems, etc., can solve the problem of large delay in charging and discharging of the gate of the output power tube, affecting the slew rate of the gate charging and discharging voltage, power The problem of too large gate capacitance of the tube can reduce the charging and discharging time, improve the load transient response speed, and improve the bidirectional slew rate.
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[0063] This embodiment includes: an error amplifier, two feedback proportional resistors R f1 , R f2 , output power tube M P , driver, PNP-type fifth transistor Q5, third transistor Q3, NPN-type second transistor Q2, fourth transistor Q4, sixth transistor Q6, the specific connection relationship is: the reference voltage is connected to the same input terminal of the error amplifier, and the first feedback Sampling resistor R f1 One terminal is connected to the output voltage V OUT , the other end is connected to the inverting input end of the error amplifier, and the second feedback sampling resistor R f2 One end is connected to the inverting input end of the error amplifier, the other end is grounded, and the output end of the error amplifier V EA Connect to the base of the PNP fifth transistor Q5, and the emitter of the fifth transistor Q5 is connected to the output voltage V OUT , the collector of the fifth transistor Q5 is connected to the collector and base of the s...
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