AH293_10 [DIODES]
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR; 低电压霍尔效应智能风扇电机型号: | AH293_10 |
厂家: | DIODES INCORPORATED |
描述: | LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR |
文件: | 总8页 (文件大小:67K) |
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
Description
Pin Assignments
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.
(Top View)
Vdd
1
2
RD
5
293
GND
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.
DO 3
4
DOB
SOT89-5L
The AH293 is available in SOT89-5L package.
Features
Applications
•
•
Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
•
•
•
•
•
•
•
•
•
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
Output Current: IO(AVE) = 400 mA
Packaged in SOT89-5L
Green Molding Compound
Typical Application Circuit (Note 1)
D2
Vdd
(1.8V/5.75V)
R
pu
293
D1
Coil2
Coil1
1
2
3
4
5
GND
RD
(alarm)
C3
R1
C1
R2
C2
Notes: 1. R1, R2: typical 56 Ohm
C1, C2, C3: typical 2.2µF
The R, C value need to be fine tuned based
on coils design.
1.8V/5.75V DC Brush-Less Fan with RD Output Function
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Pin Descriptions
Pin Name
Description
RD
Vdd
DO
Rotor-State Detection
Input Power
Output Pin
DOB
GND
Output Pin
Ground
Functional Block Diagram
Vdd
Lock detect,
shutdown and
automatic re-start
Regulator
DO
Hall
Plate
Control Logic
Amp.
DOB
GND
RD
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Absolute Maximum Ratings (TA = 25°C)
Symbol
Characteristics
Rating
Unit
Vdd
IO(AVE)
IO(PEAK)
PD
Operating Supply Voltage
Output Current
8
400
V
mA
mA
mW
°C
Output Current
Power Dissipation
Storage Temperature
Maximum Junction Temperature
700
800
-55 ~ 150
150
TST
TJ
°C
Recommended Operating Conditions
Symbol
Characteristic
Conditions
Min
Max
Unit
Vdd
TA
Supply Voltage (Note 2)
Operating Ambient Temperature
Operating
Operating
1.8
-20
5.75
100
V
°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 (TA = 25 °C, Vdd = 5V, unless otherwise specified)
Symbol
Idd
Characteristics
Supply current
Conditions
Min
Typ.
2.6
0.4
3
Max
Unit
mA
Sec
Sec
mV
mV
ohm
V
Operating
-
4.0
TRLP-ON
TRLP-OFF
Rotor Lock Protection On Time
Rotor Lock Protection Off Time
-
-
2.4
3.6
IO = 180mA
IO = 350mA
-
-
-
-
-
300
600
1.75
0.5
15
-
-
-
-
-
VOUT(SAT)
Output Saturation Voltage
RDS(ON)
VOL
Output On Resistance
RD Output Vds
IO = 10mA
Vz
Output Zener-Breakdown Voltage
V
Truth Table (Note 3)
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
Notes: 3. Latch-type RD output is low during rotor rotation and high when the rotor is locked (not rotating)
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www.diodes.com
June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Magnetic Characteristics (TA = 25 °C, Vdd = 5V, unless otherwise specified, Note 4)
(1mT = 10 Gauss)
Symbol
Characteristics
Operation Point
Min
Typ.
Max
Unit
Bop
Brp
Bhy
-
-60
-
30
-30
60
60
-
Gauss
Gauss
Gauss
Release Point
Hysteresis
-
Notes: 4. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Operating Characteristics
DOB
DO
12
12
10
8
RP
ON
OFF
OFF
RP
OP
ON
10
8
6
6
4
4
2
2
OP
Vsat
Vsat
Brp
0
Bop
Brp
0
Bop
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
S
Marking
side
N
( SOT89-5L )
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Performance Characteristics
25
50
60
70
75
80
85
416
135
96
90
384
140
64
95
352
145
32
100
320
150
0
TA (°C)
PD (mW)
TA (°C)
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
-40
25
50
75
100
125
150
TA (°C)
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Ordering Information
AH 293 - Y G - 13
Package
Green
Packing
Y : SOT89-5L
G : Green (Note 5)
13 : Tape & Reel
Device
Bulk
13” Tape and Reel
Package Packaging
Part Number
Part Number
Suffix
Code
(Note 6, 7)
Quantity
Quantity
Suffix
AH293-YG-13
Y
SOT89-5L
NA
NA
2500/Tape & Reel
-13
Notes: 5. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
6. 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.
7. 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.
Marking Information
(Top View)
5
1
4
Y : Year : 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week;
293 Y W X
z represents 52 and 53 week
X : Internal code
A~Z : Green
2
3
SOT89-5L
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Package Outline Dimensions (All Dimensions in mm)
Sensor Location
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.
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notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2010, Diodes Incorporated
www.diodes.com
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June 2010
© Diodes Incorporated
AH293
Document number: DS31048 Rev. 6 - 2
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