AH292 [DIODES]
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER; 低电压霍尔效应智能风扇电机控制器
| 型号： | AH292 |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR CONTROLLER |
| 文件： | 总7页 (文件大小：158K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
Features
AH292 is a monolithic fan motor controller with Hall sensor’s
capability. It contains two complementary open-collector
transistors for motor’s coil driving, automatic lock current
shutdown, and recovery protections. In addition a Frequency
generator (FG) output is also available for speed detection.
•
•
•
•
•
•
On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Frequency Generator (FG) Output
Built-in Zener Protection for Output Driver
Operating Voltage: 1.8V~5.75 V
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.
•
Output Current: IO(AVE) = 400 mA
•
Lead Free Finish/RoHS Compliant for Lead Free
products (Note 1)
Lead Free Packages: SOT89-5L
•
Ordering Information
X X X
AH292 -
Packing
Lead-Free
Package
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
Part Number
7” Tape and Reel
Package
Code
Packaging
(Note 2)
Device
Quantity
Quantity
Part Number Suffix
Suffix
AH292-Y
Y
SOT89-5L
NA
NA
2500/Tape & Reel
-13
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.
AH292 Rev. 3
1 of 7
JANUARY 2007
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© Diodes Incorporated
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Pin Assignment
Vdd
1
FG
5
AH292
2
3
GND
DO
4 DOB
SOT89-5L
Pin Descriptions
Symbol
Description
FG
Frequency Generation
Input Power
Output Pin
Output Pin
Ground
Vdd
DO
DOB
GND
Block Diagram
Vdd
2
Lock shutdown
and
Automatic recovery
Regulator
3
4
DO
Hall
Plate
Control Logic
Amp.
DOB
5
1
GND
FG
AH292 Rev. 3
2 of 7
JANUARY 2007
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© Diodes Incorporated
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Typical Application Circuit
D2
Vdd
(1.8V/5.75V)
R
pu
292
D1
Coil
2
Coil
1
1
2
3
4
5
GND
FG
R1
C1
R2
C2
C3
Notes: R1, R2: typical 56 O
2.2μF
The R, C value need to be fine tuned
based on coils design.
C1, C2, C3: typical
1.8V/5.75V DC Brush-less Fan with FG output function
Absolute Maximum Ratings ( TA = 25°C )
Characteristics
Symbol
Rating
Unit
Operating Supply Voltage
Vdd
8
V
IO(AVE)
IO(PEAK)
400
700
Output Current
mA
Power Dissipation
PD
800
mW
Operating Temperature
Storage Temperature
-20 ~ 100
-55 ~ 150
150
°C
°C
°C
Topr
Tstg
Tj
Maximum Junction Temperature
AH292 Rev. 3
3 of 7
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© Diodes Incorporated
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Electrical Characteristics ( TA = 25 °C, Vdd = 5V, unless otherwise specified )
Characteristics
Supply Voltage
Symbol
Min. Typ. Max. Unit
Conditions
Vdd
1.8*
-
5.75
V
Operating
Operating
Supply current
Idd
-
2.6
0.4
3
4.0
mA
Sec
Sec
Locked Protection On
Locked Protection Off
-
-
Tlrp-on
Tlrp-off
2.4
3.6
IO = 180mA
IO = 350mA
-
-
-
-
-
300
600
1.75
0.5
15
-
-
-
-
-
Output saturation voltage
mV
VOUT (SAT )
Output On Resistance
FG output Vds
ohm
V
Rds(on)
Vol
IO = 10mA
Output Zener-breakdown Voltage
Vz
V
*Note: 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.
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 = 5V, unless otherwise specified )
( 1mT = 10 Gauss )
Characteristics
Operation Point
Symbol
Min.
Typ.
Max.
Unit
Bop
Brp
Bhy
--
-60
--
30
-30
60
60
--
Gauss
Gauss
Gauss
Release Point
Hysteresis
--
AH292 Rev. 3
4 of 7
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© Diodes Incorporated
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Operating Characteristics
DOB
DO
12
12
RP
OFF
OFF
RP
OP
ON
10
8
10
8
6
6
4
4
2
2
ON
OP
Vsat
Vsat
Brp
0
Bop
Brp
0
Bop
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
S
Marking
side
N
( SOT25 )
AH292 Rev. 3
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© Diodes Incorporated
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Performance Characteristics
(1) 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)
PD (mW)
Power Dissipation Curve
900
800
700
600
500
400
300
200
100
0
0
25
50
75
100
125
150
TA (°C)
Marking Information
(1) SOT89-5L
5
1
4
Y : Year: 0-9
M : Month: A~L
292 Y M X
X : Internal code
a~z : Lead Free
2
3
AH292 Rev. 3
6 of 7
JANUARY 2007
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© Diodes Incorporated
AH292
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Package Information (unit: mm)
(1) Package type: SOT89-5L
Sensor Location
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.
AH292 Rev. 3
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JANUARY 2007
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© Diodes Incorporated
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