- Patent Title: Circuit device, power receiving device, and electronic apparatus
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Application No.: US15420934Application Date: 2017-01-31
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Publication No.: US10320223B2Publication Date: 2019-06-11
- Inventor: Kota Onishi
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2016-024569 20160212
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H02J7/02 ; H02J50/12 ; H02J7/04

Abstract:
A circuit device includes a power supply portion that supplies power from a battery to a power supply target, and a control portion that controls the power supply portion. The power supply portion includes a charge pump circuit that steps down a battery voltage VBAT of the battery to a voltage that is m/n times the battery voltage VBAT, and supplies the stepped down voltage to the power supply target from a terminal (n is an integer of one or more, m is an integer of one or more and (n−1) or less). The control portion stops a charge pump operation of the charge pump circuit when a voltage VOUT′ of the terminal satisfies the expression VOUT′>VBAT×m/n.
Public/Granted literature
- US20170237276A1 CIRCUIT DEVICE, POWER RECEIVING DEVICE, AND ELECTRONIC APPARATUS Public/Granted day:2017-08-17
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