AH288
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH288 Rev. 12 5 of 9 APRIL 2010
DS31040 www.diodes.com © Diodes Incorporated
Electrical Characteristics (TA = 25 °C, Vdd
= 24V, unless otherwise specified)
Symbol Parameter
Conditions
Min Typ. Max Unit
I
CC
Supply Current Operating - 2 4 mA
I
OFF
Output Leakage Current V
OUT
= 24V - < 0.1 10 μA
T
LRP-ON
Locked Protection On 0.4 0.46 0.6 Sec
T
LRP-OFF
Locked Protection Off 2.4 2.76 3.6 Sec
V
OUT(SAT)
Output Saturation Voltage
I
O
= 200mA - 450 700
mV
I
O
= 300mA - 680 800
R
DS(ON)
Output On Resistance I
O
= 200mA - 2.25 3.5 ohm
V
OL
FG Output Vds I
O
= 10mA - 0.3 0.5 V
V
Z
Output Zener-breakdown Voltage 42 55 65 V
Truth Table
IN- IN+ CT OUT1 OUT2 FG Mode
H L L H L H Rotating
L H L L H L Rotating
- - H off off - Lockup protection activated
Magnetic Characteristics (TA = 25 °C, Vdd
= 24V, unless otherwise specified, Note 7)
(1mT=10 Gauss)
Symbol Characteristics Min Typ. Max Unit
Bop Operate Point 10 30 60 Gauss
Brp Release Point -60 -30 -10 Gauss
Bhy Hysteresis - 60 - Gauss
Notes: 7. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
