Diodes AH293 - Manual (Page 3)

AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH293
Document number: DS31048 Rev. 6 - 2
3 of 8
www.diodes.com
June 2010
© Diodes Incorporated
Absolute Maximum Ratings (T
A
= 25
°C)
Symbol Characteristics Rating Unit
Vdd Operating Supply Voltage 8 V
I
O(AVE)
Output Current 400 mA
I
O(PEAK)
Output Current 700 mA
P
D
Power Dissipation 800 mW
T
ST
Storage Temperature -55 ~ 150 °C
T
J
Maximum Junction Temperature 150
°C
Recommended Operating Conditions
Symbol Characteristic Conditions Min Max Unit
Vdd Supply Voltage (Note 2) Operating 1.8 5.75 V
T
A
Operating Ambient Temperature Operating -20 100 °C
Notes: 2. The output of IC will be switched after the supply voltage is over 1.8V, but the magnetic characteristics won't be normal until the
supply is over 2.0V.
Electrical Characteristics (T
A
= 25
°C, Vdd
= 5V, unless otherwise specified)
Symbol Characteristics Conditions Min Typ. Max Unit
Idd Supply current Operating - 2.6 4.0 mA
T
RLP-ON
Rotor Lock Protection On Time - 0.4 - Sec
T
RLP-OFF
Rotor Lock Protection Off Time 2.4 3 3.6 Sec
V
OUT(SAT)
Output Saturation Voltage
I
O
= 180mA - 300 - mV
I
O
= 350mA - 600 - mV
R
DS(ON)
Output On Resistance - 1.75 - ohm
V
OL
RD Output Vds I
O
= 10mA - 0.5 - V
Vz Output Zener-Breakdown Voltage - 15 - V
Truth Table
(Note 3)
IN- IN+ CT OUT1 OUT2 RD Mode
H L L H L L Rotating
L H L L H L Rotating
- - H off off off Lockup protection activated
Notes: 3. Latch-type RD output is low during rotor rotation and high when the rotor is locked (not rotating)