Diodes AH289 - Manual (Page 4)

AH289
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH289 Rev. 11 4 of 9 APRIL 2010
DS31052 www.diodes.com © Diodes Incorporated
Absolute Maximum Ratings
(T
A
= 25
°C)
Symbol Parameter Rating Unit
Vdd Supply Voltage 30 V
I
O
Output Current
I
O (AVE)
400 mA
I
O (PEAK)
700 mA
P
D
Power Dissipation 800 mW
T
ST
Storage Temperature -55 ~ 150 °C
T
J
Maximum Junction Temperature 150
°C
θ
JA
Thermal Resistance Junction-to-Case (Note 5) 156
°C/W
T J
T A
Tc
JC
θ
JA
θ
Notes: 5.
θ
JA should be confirmed with what heat sink thermal resistance. If no heat sink contacting,
θ
JA is almost the same as
θ
JC. .
Recommended Operating Conditions
Symbol Characteristic Conditions Min Max Unit
Vdd Supply Voltage (Note 6) Operating 3.8 28 V
T
A
Operating Ambient Temperature Operating -40 100
°C
Notes: 6. Please watch the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil.