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AH289
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Features
• On Chip Hall Sensor
• Rotor-Locked Shutdown
• Automatically Restart
• Rotor-State Detection (RD) Output
• Built-in Zener Protection for Output Driver
• Operating Voltage: 3.8V~28V
• Output Current: I
• Lead Free Package: SOT89-5L (Note 1)
• SOT89-5L: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 2)
O (AVE)
= 400mA
Typical Application Circuit
Vdd
(24V)
R
D1
pu
RD
General Description
AH289 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-drain transistors
for motors coil driving, an automatic lock current shutdown, and
recovery protection. In addition, the Rotor-State Detection (RD)
output is for Rotor-State Detection.
Rotor-lock shutdow n detection circuit turns off the out put driver
when the rotor is blocked to avoid coil overheat. Then, the
automatic recovery circuit will restart the motor. These protected
actions are repeated and periodic during the blocked period. U ntil
the blocking is removed, the motor recovers and runs normally.
D2
5 4
289
Coil2
Coil1
48V
D3
132
C1
GND
* Rpu : typical 10 Kohm
Note: The optional Capacitor C1 and Diode D3 are for power stabilization. C1 is recommended to
be E-Cap., luF/25V; D3 is recommended to be Zener Diode, V
value need to be fine tuned to optimize design for different coils and power suppliers.
=27V. Which C1and D3
Z
48V
24V DC Brush-Less Fan with RD Output Function
AH289 Rev. 11 1 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
Page 2
Ordering Information
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
AH289 - Y L - 13
PackingPackage Lead Free
AH289
Y : SOT89-5L
L : Lead Free (Note 1)
13 : Tape & Reel
G : Green
Device
AH289-YL-13 Y SOT89-5L 2500/Tape & Reel -13
AH289-YG-13 Y SOT89-5L 2500/Tape & Reel -13
Notes: 1. AH289-YL-13 will be replaced b y AH289-YG-13
2. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
4. Reverse taping as shown on Diodes Inc. Surface Mount (SMD) Packaging document AP02007, which can be found on our website
http://www.diodes.com/datasheets/ap02007.pdf.
Package
Code
Packaging
(Note 3)
Quantity Part Number Suffix
13” Tape and Reel
Pin Assignments
( Top View )
Vdd
GND
DO
1
289
2
3
RD
5
7
4
DOB
SOT89-5L
Pin Descriptions
Pin Name Pin No. Description
Vdd 1 Input power
GND 2 Ground
DO 3 Output pin
DOB 4 Output pin
RD 5 Rotor-State Detection
AH289 Rev. 11 2 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
Page 3
Block Diagram
Vdd
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Lock shutdown
Automatic recovery
and
AH289
Regulator
Hall
Plate
Amp.
Control Logic
DO
DOB
GND
AH289 Rev. 11 3 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
RD
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AH289
)
)
θJAθ
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Absolute Maximum Ratings (T
= 25°C)
A
Symbol Parameter Rating Unit
Vdd Supply Voltage 30 V
400 mA
I
IO
Output Current
O (AVE
I
700 mA
O (PEAK
PD Power Dissipation 800 mW
TST Storage Temperature -55 ~ 150
TJ Maximum Junction Temperature 150
θ
Thermal Resistance Junction-to-Case(Note 5 ) 156
JA
TA
TJ
JC
Tc
Notes: 5. θJA should be confirmed with what heat sink thermal resistance. If no heat sink contacting, θ
is almost the same as θ
JA
JC.
.
Recommended Operating Conditions
Symbol Characteristic Conditions Min Max Unit
Vdd Supply Voltage (Note 6) Operating 3.8 28 V
TA Operating Ambient Temperature Operating -40 100
Notes: 6. Please watch the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil.
°C
°C
°C/W
°C
AH289 Rev. 11 4 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
Page 5
AH289
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Electrical Characteristics (T
= 25 °C, Vdd = 24V, unless otherwise specified)
A
Symbol
Parameter
Conditions
Min Typ. Max Unit
Idd Supply Current Operating - 2.0 4.0 mA
I
Output Leakage Current V
OFF
T
LRP-ON
T
LRP-OFF
V
OUT(SAT)
R
DS(ON)
Locked Protection On 0.4 0.46 0.6 Sec
Locked Protection Off 2.4 2.76 3.6 Sec
Output Saturation Voltage
Output On Resistance IO = 200mA - 2.25 3.5 ohm
= 24V - < 0.1 10 μA
OUT
= 200mA - 450 700
I
O
IO = 300mA - 680 800
VOL RD Output Vds IO = 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
= 25 °C, Vdd
A
= 24V, unless otherwise specified, Note 8)
(1mT = 10 Gauss)
Symbol Characteristics Min Typ. Max Unit
mV
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 informat ion, which will vary with suppl y voltage, oper ating temperat ure and after soldering.
AH289 Rev. 11 5 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
Page 6
Operating Characteristics
DOB DO
AH289
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
RP
Output Voltage in Volts
ON
24
20
16
12
8
4
OFF
OP
V
SAT
Output Voltage in Volts
V
OFF
RP
SAT
Magnetic Flux Density in GaussMagnetic Flux Density in Gauss
24
20
16
12
OP
8
4
ON
BopBrp 0BopBrp 0
S
Marking
side
N
( SOT89-5L )
AH289 Rev. 11 6 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
Page 7
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
Performance Characteristics (SOT89-5L)
TA (°C)
25 50 60 70 75 80 85 90 95 100
AH289
CONTROLLER
800 640 576 512 480 448 416 384 352 320
105 110 115 120 125 130 135 140 145 150
288 256 224 192 160 128 96 64 32 0
0
-4 0
0 255075100125150
PD (mW)
TA (°C)
PD (mW)
P
D
(mW )
900
800
700
600
500
400
300
200
100
Marking Information
(1) SOT89-5L
Power Dissipation Curve
TA (°C)
( Top View )
5
289 Y W X
1 2 3
AH289 Rev. 11 7 of 9 APRIL 2010
DS31052
4
7
Y : Year : 0~9
: Week : A~Z : 1~26 week;
W
a~z : 27~52 week;
z represents 52 and 53 week
: Internal code
X
A~Z : Green
a~z : Lead Free
www.diodes.com © Diodes Incorporated
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HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
Package Information (All Dimensions in mm)
(1) Package type: SOT89-5L
AH289
CONTROLLER
Sensor Location
AH289 Rev. 11 8 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
Page 9
AH289
HIGH VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
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DOCUMENT, INCLUDING, BUT NOT LIMITED TO, TH E IMPLIED WARRA NTIES OF MERCHA NTABILITY AND FITNE SS FOR A
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Copyright © 2010, Diodes Incorporated
www.diodes.com
IMPORTANT NOTICE
LIFE SUPPORT
AH289 Rev. 11 9 of 9 APRIL 2010
DS31052
www.diodes.com © Diodes Incorporated
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