Low-dropout voltage regulator incorporating a current efficient

Details Low-dropout voltage regulator incorporating a current efficient Low-dropout voltage regulator incorporating a current efficient

1997-12-30

2000-04-04

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323279, 323280, 323281, G05F 140

Patent

active

060465778

ABSTRACT:
An improved low-dropout ("LDO") voltage regulator incorporates a transient response boost circuit which is added to the slew-rate limited node at the control terminal of the LDO voltage regulator output transistor and provides improved transient response performance to the application of various load current step stimuli while requiring no standby or quiescent current during zero output current load conditions. The transient boost circuit supplies current to the slew-rate limited node only upon demand and may be constructed as either a localized positive feedback loop or a number of switching devices which conduct current only during slew-rate conditions.

REFERENCES:
patent: 4008418 (1977-02-01), Murphy
patent: 5130635 (1992-07-01), Kase
patent: 5686820 (1997-11-01), Riggio, Jr.

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