ah287-y Diodes, Inc., ah287-y Datasheet - Page 4

• Manufacturer Part Number: ah287-y
• Description: High Voltage Hall-effect Smart Fan Motor Controller
• Manufacturer: Diodes, Inc.

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