AH293-P [DIODES]
暂无描述;
| 型号： | AH293-P |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | 暂无描述 风扇 电动机控制 电机 控制器 |
| 文件： | 总7页 (文件大小：159K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
General Description
Features
AH293 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. Also, rotor-state detection
(RD) output is for speed detection.
•
•
•
•
•
•
On Chip Hall Sensor
Rotor-Locked Shutdown
Automatically Restart
Rotor-State Detection (RD) 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)
Packages: SOT89-5L
•
Ordering Information
- X X X
AH293
Package
Packing
-7/-13 :
Lead-Free
L : Lead Free
Y: SOT89-5L
Taping
Note:
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Package
Code
Y
Packaging
(Note 2)
SOT89-5L
7” Tape and Reel
Quantity Part Number Suffix
2500/Tape & Reel -13
Device
AH293-Y
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.
AH293 Rev. 2
1 of 7
JANUARY 2007
www.diodes.com
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Pin Assignment
Vdd
1
RD
5
AH293
2
3
GND
DO
4 DOB
SOT89-5L
Pin Descriptions
Symbol
Description
RD
Rotor-State Detection
Input Power
Output Pin
Output Pin
Ground
Vdd
DO
DOB
GND
AH293 Rev. 2
2 of 7
JANUARY 2007
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© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Block Diagram
Vdd
2
Lock shutdown
and
Automatic recovery
Regulator
3
4
DO
Hall
Plate
Control Logic
Amp.
DOB
5
1
GND
RD
Typical Application Circuit
D2
Vdd
(1.8V/5.75V)
R
pu
293
D1
Coil
2
Coil
1
1
2
3
4
5
GND
RD
(alarm)
C3
R1
C1
R2
C2
Notes: R1, R2: typical 56 O
2.2 F
The R, C value need to be fine tuned
based on coils design.
μ
C1, C2, C3: typical
1.8V/5.75V DC Brush-Less Fan with RD Output Function
AH293 Rev. 2
3 of 7
JANUARY 2007
www.diodes.com
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Absolute Maximum Ratings ( TA = 25°C )
Characteristics
Symbol
Rating
Unit
Operating Supply Voltage
Vdd
IO (AVE)
IO (PEAK)
PD
8
400
V
Output Current
mA
700
Power Dissipaton
800
mW
°C
°C
Operating Temperature
Storage Temperature
-20 ~ 100
-55 ~ 150
150
Top
Tst
Maximum Junction Temperature
Tj
°C
Electrical Characteristics ( TA = 25 °C, Vdd = 5V, unless otherwise specified )
Characteristics
Supply Voltage
Symbol
Min. Typ. Max. Unit
Conditions
Operating
Operating
1.8*
-
5.75
V
Vdd
Supply Current
-
2.6
0.4
3
4.0
mA
Sec
Sec
Idd
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
VOUT(sat)
mV
Output On Resistance
RD Output Vds
ohm
V
Rds(on)
Vol
IO = 10mA
Output Zener-Breakdown Voltage
V
Vz
*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
RD
Mode
H
L
-
L
H
-
L
L
H
H
L
off
L
H
off
L
L
off
Rotating
Rotating
Lockup protection activated
Latch-type RD output is low during rotation and high during stop
AH293 Rev. 2
4 of 7
JANUARY 2007
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© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
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
--
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
( SOT89-5 )
AH293 Rev. 2
5 of 7
JANUARY 2007
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© Diodes Incorporated
AH293
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 (m W )
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
293 Y M X
X : Internal code
a~z : Lead Free
2
3
AH293 Rev. 2
6 of 7
JANUARY 2007
www.diodes.com
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Package Information (unit:mm )
(1) 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.
AH293 Rev. 2
7 of 7
JANUARY 2007
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© Diodes Incorporated
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