Title:
【発明の名称】低共通電流を有する低ドロップアウト電圧調整器
Document Type and Number:
Japanese Patent JP3045747
Kind Code:
B2
Abstract:
A circuit is shown in which a voltage regulator has an output stage that operates as a Darlington when the input-output differential exceeds a threshold. The circuit automatically switches to a common emitter output and an emitter-follower driver when the differential falls below the threshold. A current limiter prevents excessive common current when the output transistor is saturated.
Inventors:
Matsuro Koterasawa
Application Number:
JP16146990A
Publication Date:
May 29, 2000
Filing Date:
June 21, 1990
Export Citation:
Assignee:
National Semiconductor Corporation
International Classes:
G05F1/56; (IPC1-7): G05F1/56
Domestic Patent References:
| JP5015050A |
Attorney, Agent or Firm:
Kazuo Kobashi (1 person outside)