AH289-YL-7 [DIODES]
Sensor/Transducer,;
| 型号： | AH289-YL-7 |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Sensor/Transducer, |
| 文件： | 总8页 (文件大小：210K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
General Description
Features
AH285 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-drain transistors
as motor coil drivers, automatic lock current shutdown, and
recovery protections. Additional, frequency generator (FG) output
is for speed detection relatively.
•
•
•
•
•
•
•
•
On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Frequency Generator (FG) Output
Built-in Zener Protection for Output Driver
Operating Voltage: 3.8V~20V
Output Current: IO(AVE) = 500mA for SOT89-5
Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
Rotor-lock shutdown detection circuit turns off the output 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. Until
the blocking is removed, the motor recovers and runs normally.
•
Package: SOT89-5L
Ordering Information
-
X
AH285 X
X
Package
Packing
Lead-Free
Y : SOT89-5L
L : Lead-Free
-B : Bulk
-7/-13 : Taping
Note:
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Tube/Bulk 7” Tape and Reel
Package
Code
Packaging
(Note 2)
Quantity
Part
Quantity
Part Number
Device
Number
Suffix
NA
Suffix
AH285-Y
Y
SOT89-5
NA
2500/Tape & Reel
-7
Lead-free
Note: 2. 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.
AH285 Rev. 2
1 of 8
JANUARY 2007
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© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Pin Assignment
Vdd
1
FG
5
285
2
3
GND
DO
4 DOB
SOT89-5L
Pin Descriptions
Symbol
Description
FG
Vdd
DO
Frequency Generation
Input Power
Output Pin
DOB
GND
Output Pin
Ground
Block Diagram
Vdd
2
Lock shutdown
and
Automatic recovery
Regulator
3
4
DO
Hall
Plate
Control Logic
Amp.
DOB
5
1
GND
FG
AH285 Rev. 2
2 of 8
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JANUARY 2007
© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Typical Application Circuit
D2
Vdd
(12V)
Rpu
285
D1
Coil2
Coil1
1
2
3
4
5
GND
FG
C3
R1
C1
R2
C2
Notes: R1, R2: typical 56
Ω
2.2 F
C1, C2, C3: typical
µ
The R, C value need to be fine tuned
base on coils design.
12V DC Brush-less Fan with FG output function
Absolute Maximum Ratings (TA = 25°C)
Characteristics
Supply Voltage
Symbol
Rating
Unit
24
500
700
V
V
dd
IO(AVE)
IO(PEAK)
PD
Output Current
mA
Power Dissipation
800
mW
°C
°C
°C
°C/W
Operating Temperature
Storage Temperature
Maximum Junction Temp.
Thermal Resistance
-40 ~ 100
-55 ~ 150
150
Topr
Tstg
Tj
156
θJA
TA
TJ
Tc
θJA
θJC
Note: θJA should be confirmed with what heat sink thermal resistance. If no heat sink contacting, θJA is almost the same as
.
θJC
AH285 Rev. 2
3 of 8
JANUARY 2007
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© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Electrical Characteristics (TA = 25°C, Vdd =12V, unless otherwise specified)
Characteristics
Supply Voltage
Symbol
Min. Typ. Max. Unit
Conditions
Vdd
3.8
-
20
V
Operating
Operating
VOUT=24V
Supply Current
Idd
-
-
2
< 0.1
0.5
3
4
10
mA
µA
Output Leakage Current
Locked Protection On
Locked Protection Off
Ioff
0.4
2.4
-
0.6
3.6
500
900
1.67
-
Sec
Sec
Tlrp-on
Tlrp-off
IO=300mA
IO=500mA
IO=300mA
IO=10mA
375
625
1.25
0.5
42
Output Saturation Voltage
VOUT(sat)
mV
-
Output On Resistance
FG Output Vds
-
ohm
V
Rds(on)
Vol
-
Output Zener-Breakdown Voltage
35
60
V
Vz
Truth Table
IN-
IN+
CT
OUT1
OUT2
FG
Mode
H
L
-
L
H
-
L
L
H
H
L
off
L
H
off
H
L
-
Rotating
Rotating
Lockup protection activated
Magnetic Characteristics (TA = 25°C, Vdd = 12V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics
Symbol
Min.
Typ.
Max.
Unit
Operation Point
Release Point
Hysteresis
Bop
Brp
Bhy
10
-60
-
30
-30
60
60
-10
-
Gauss
Gauss
Gauss
AH285 Rev. 2
4 of 8
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JANUARY 2007
© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Operating Characteristics
DOB
DO
12
12
RP
OFF
OP
OFF
RP
OP
ON
10
8
10
8
6
6
4
4
2
2
ON
Vsat
Vsat
Brp
0
Bop
Brp
0
Bop
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
S
N
Marking side
( SOT89-5 )
AH285 Rev. 2
5 of 8
JANUARY 2007
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© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Performance Characteristics (SOT89-5L)
TA (°C)
PD (mW)
TA (°C)
25
50
60
70
75
80
85
416
135
96
90
384
140
64
95
352
145
32
100
320
150
0
800
105
288
640
110
256
576
115
224
512
120
192
480
125
160
448
130
128
PD (mW)
P
( m W )
D
P o w e r D is s ip a t io n C u r v e
9 0 0
8 0 0
7 0 0
6 0 0
5 0 0
4 0 0
3 0 0
2 0 0
1 0 0
0
0
2 5
5 0
7 5
1 0 0
1 2 5
1 5 0
( ° C )
T
A
AH285 Rev. 2
6 of 8
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JANUARY 2007
© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Marking Information
(1) SOT89-5L
5
1
4
Y : Year 0-9
M : Month A~L
285 Y M X
X : Internal code
a~z : Lead Free
2
3
Package Information
(1) SOT89-5L
Sensor Location
AH285 Rev. 2
7 of 8
JANUARY 2007
www.diodes.com
© Diodes Incorporated
AH285
HALL-EFFECT SMART FAN MOTOR CONTROLLER
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agreeto hold DiodesIncorporatedand all the companieswhose productsare represented onour website, harmlessagainst all damages.
LIFE SUPPORT
Diodes Incorporated productsare notauthorizedfor use ascriticalcomponentsin lifesupportdevices or systemswithout theexpressed written approval ofthe
PresidentofDiodesIncorporated.
AH285 Rev. 2
8 of 8
JANUARY 2007
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© Diodes Incorporated
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