Title:
MOTOR DRIVING CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE USING SAME
Document Type and Number:
Japanese Patent JP2009100560
Kind Code:
A
Abstract:
To provide a motor driving circuit which can reduce overshooting of output voltage caused by counterelectromotive force by means of a reduced-capacitance transistor.
A motor driving circuit 100 includes an output circuit 50 and a motor driving circuit 100a includes an output circuit 50a. The output circuits 50 and 50a each have driving transistors Q1 and Q2 for supplying a driving current to a motor. Furthermore, the output circuits 50 and 50a each have a control transistor Q3 for turning on the driving transistor Q1 connected to the ground side when the output voltage Vout exceeds the supply voltage Vcc.
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Inventors:
OZAWA MAKOTO
OHARA TOMOMITSU
OHARA TOMOMITSU
Application Number:
JP2007270008A
Publication Date:
May 07, 2009
Filing Date:
October 17, 2007
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD
International Classes:
H02P7/06; H02P7/29; H02P7/291
Domestic Patent References:
| JP2007166889A | 2007-06-28 | |||
| JP2006254543A | 2006-09-21 | |||
| JPH0434896U | 1992-03-24 |
Attorney, Agent or Firm:
Tadahiko Ito
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