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AH287-PL-B Datasheet(PDF) 4 Page - Diodes Incorporated

Part # AH287-PL-B
Description  HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AH287-PL-B Datasheet(HTML) 4 Page - Diodes Incorporated

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AH287
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH287 Rev. 4
4 of 10
JANUARY 2007
www.diodes.com
© Diodes Incorporated
Electrical Characteristics
(TA = 25 °C, Vdd =24V, unless otherwise specified)
Characteristics
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
Vdd
Operating
3.8
-
28*
V
Supply current
Icc
Operating
-
2.0
4.0
mA
Output Leakage Current
Ioff
VOUT=24V
-
< 0.1
10
µA
Locked Protection On
Tlrp-on
0.4
0.46
0.6
Sec
Locked Protection Off
Tlrp-off
2.4
2.76
3.6
Sec
IO=200mA
-
450
700
Output saturation voltage
)
sat
(
OUT
V
IO=300mA
-
680
800
mV
Output On resistance
Rds(on)
IO=200mA
-
2.25
3.5
ohm
Output Zener-breakdown Voltage
Vz
42
55
65
V
*Note: Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil.
Truth Table
IN-
IN+
CT
OUT1
OUT2
Mode
H
L
L
H
L
Rotating
L
H
L
L
H
Rotating
-
-
H
off
off
Lockup protection activated
Magnetic Characteristics
(TA = 25
°C, Vdd = 24V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Bop
10
30
60
Gauss
Release Point
Brp
-60
-30
-10
Gauss
Hysteresis
Bhy
--
60
--
Gauss


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