Diodes AH289 - Manual (Page 5)

AH289
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH289 Rev. 11 5 of 9 APRIL 2010
DS31052 www.diodes.com © Diodes Incorporated
Electrical Characteristics
(T
A
= 25
°C, Vdd
= 24V, unless otherwise specified)
Symbol Parameter
Conditions
Min Typ. Max Unit
Idd Supply Current Operating - 2.0 4.0 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
RD Output Vds I
O
= 10mA - 0.3 0.5 V
Vz Output Zener-Breakdown Voltage 42 55 65 V
Truth Table
(Note 7)
IN- IN+ CT OUT1 OUT2 RD Mode
H L L H L L Rotating
L H L L H L Rotating
- - H off off H Lockup protection activated
Notes: 7. Latch-type RD output is low during rotation and high during stop.
Magnetic Characteristics
(T
A
= 25
°C, Vdd
= 24V, unless otherwise specified, Note 8)
(1mT = 10 Gauss)
Symbol Characteristics Min Typ. Max Unit
Bop Operation Point 10 30 60 Gauss
Brp Release Point -60 -30 -10 Gauss
Bhy Hysteresis -- 60 -- Gauss
Notes: 8. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.