Title:
コンパレータ、それを用いたオシレータ、ＤＣ／ＤＣコンバータの制御回路、ＤＣ／ＤＣコンバータ、電子機器
Document Type and Number:
Japanese Patent JP5877074
Kind Code:
B2
Abstract:
A comparator compares a first input voltage and a second input voltage to generate a comparative output depending on a result of the comparison. The comparator includes a first input terminal configured to receive the first input voltage, a second input terminal configured to receive the second input voltage, a differential pair including a first input transistor whose control terminal is connected with the first input terminal and a second input transistor whose control terminal is connected with the second input terminal, a tail current source configured to supply a tail current to the differential pair, and a load circuit connected to the first input transistor and the second input transistor, and the tail current source increases the tail current, as the first input voltage approaches the second input voltage, depending on the first input voltage.
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Inventors:
Hiroki Kikuchi
Application Number:
JP2012012362A
Publication Date:
March 02, 2016
Filing Date:
January 24, 2012
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H03K5/08; H02M3/00; H03K4/08
Domestic Patent References:
| JP2003338735A | ||||
| JP2002217691A | ||||
| JP2002311063A | ||||
| JP2004282352A |
Attorney, Agent or Firm:
Sakaki Morishita
Masaki Taiki
Masaki Taiki