AH5794-WU-7 データシートの表示（PDF） - Diodes Incorporated.
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AH5794-WU-7 Datasheet PDF : 13 Pages
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AH5794
SINGLE PHASE HALL EFFECT LATCH FAN MOTOR DRIVER
Operating Characteristics (Note 6, 7, 8 and 9)
S
Magentic
N
O2
O1
FG
Normal spinning
Ton Toff
Mechanical lock
motor locked detected
“Re-start spinning”
motor locked cleared
Truth Table
O1
O2
FG
L
H
L
H
L
H
X
L
L
(Note 9)
Notes:
6. In “Normal spinning, the FG changes its state at each edge of O1.
7. When the motor locks with South pole at the Hall element, O2 is kept on “L” and O1 is a clock with Ton/Toff ratio.
When motor locks with North pole at the Hall element, O1 is kept on “L”, O2 is a clock with Ton/Toff ratio.
8. When “Re-start spinning” occurs, the motor speed ramps up to the “Normal Spinning” speed from zero.
Speed ramp-up profile depends on motor characteristics.
9. X: H or L depends on magnetic pole North or South
AH5794
Document number: DS35809 Rev. 1 - 2
6 of 13
www.diodes.com
March 2012
© Diodes Incorporated
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