DIODES AH293_10

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)
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.
Vdd
1
GND
2
5 RD
293
DO 3
74 DOB
SOT89-5L
The AH293 is available in SOT89-5L package.
Features
Applications
•
•
•
•
•
•
•
•
•
•
•
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
Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
Typical Application Circuit (Note 1)
D2
Vdd
(1.8V/5.75V)
R pu
293
D1
Coil2
1
2
3
4
5
GND
RD
(alarm)
Notes:
Coil1
C3
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.
R1
R2
C1
C2
1.8V/5.75V DC Brush-Less Fan with RD Output Function
AH293
Document number: DS31048 Rev. 6 - 2
1 of 8
www.diodes.com
June 2010
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Pin Descriptions
Pin Name
RD
Vdd
DO
DOB
GND
Description
Rotor-State Detection
Input Power
Output Pin
Output Pin
Ground
Functional Block Diagram
Vdd
Lock detect,
shutdown and
automatic re-start
Regulator
DO
Hall
Plate
Control Logic
Amp.
DOB
GND
AH293
Document number: DS31048 Rev. 6 - 2
2 of 8
www.diodes.com
RD
June 2010
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Absolute Maximum Ratings (TA = 25°C)
Symbol
Vdd
IO(AVE)
IO(PEAK)
PD
TST
TJ
Characteristics
Operating Supply Voltage
Output Current
Output Current
Power Dissipation
Storage Temperature
Maximum Junction Temperature
Rating
Unit
8
400
700
800
-55 ~ 150
150
V
mA
mA
mW
°C
°C
Recommended Operating Conditions
Symbol
Vdd
TA
Notes:
Characteristic
Supply Voltage (Note 2)
Operating Ambient Temperature
Conditions
Min
Max
Unit
Operating
Operating
1.8
-20
5.75
100
V
°C
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
Conditions
TRLP-ON
TRLP-OFF
Supply current
Rotor Lock Protection On Time
Rotor Lock Protection Off Time
VOUT(SAT)
Output Saturation Voltage
IO = 180mA
IO = 350mA
Output On Resistance
RD Output Vds
Output Zener-Breakdown Voltage
IO = 10mA
RDS(ON)
VOL
Vz
Truth Table (Note 3)
ININ+
H
L
L
H
Notes:
CT
L
L
H
OUT1
H
L
off
Operating
OUT2
L
H
off
RD
L
L
off
Min
Typ.
Max
Unit
2.4
-
2.6
0.4
3
300
600
1.75
0.5
15
4.0
3.6
-
mA
Sec
Sec
mV
mV
ohm
V
V
Mode
Rotating
Rotating
Lockup protection activated
3. Latch-type RD output is low during rotor rotation and high when the rotor is locked (not rotating)
AH293
Document number: DS31048 Rev. 6 - 2
3 of 8
www.diodes.com
June 2010
© Diodes Incorporated
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
Bop
Brp
Bhy
Notes:
Operation Point
Release Point
Hysteresis
Min
Typ.
Max
Unit
-60
-
30
-30
60
60
-
Gauss
Gauss
Gauss
4. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
Operating Characteristics
12
RP
DO
Output Voltage in Volts
Output Voltage in Volts
DOB
OFF
10
8
6
4
2
ON
OP
Vsat
OFF
12
OP
10
8
6
4
RP
2
ON
Vsat
Brp
0
Bop
Magnetic Flux Density in Gauss
Brp
0
Bop
Magnetic Flux Density in Gauss
S
Marking
side
N
( SOT89-5L )
AH293
Document number: DS31048 Rev. 6 - 2
4 of 8
www.diodes.com
June 2010
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Performance Characteristics
25
800
105
288
TA (°C)
PD (mW)
TA (°C)
PD (mW)
50
640
110
256
P D (mW )
60
576
115
224
70
512
120
192
75
480
125
160
80
448
130
128
85
416
135
96
90
384
140
64
95
352
145
32
100
320
150
0
Power Dissipation Curve
900
800
700
600
500
400
300
200
100
0
-4
00
25
50
75
10 0
125
1 50
T A (°C)
AH293
Document number: DS31048 Rev. 6 - 2
5 of 8
www.diodes.com
June 2010
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Ordering Information
AH 293 - Y G - 13
Device
AH293-YG-13
Notes:
Package
Green
Packing
Y : SOT89-5L
G : Green (Note 5)
13 : Tape & Reel
Package
Code
Packaging
(Note 6, 7)
Y
SOT89-5L
Bulk
Part Number
Quantity
Suffix
NA
NA
13” Tape and Reel
Part Number
Quantity
Suffix
2500/Tape & Reel
-13
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)
4
7
5
293 Y W X
1
2
Y : Year : 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week;
z represents 52 and 53 week
X : Internal code
A~Z : Green
3
SOT89-5L
AH293
Document number: DS31048 Rev. 6 - 2
6 of 8
www.diodes.com
June 2010
© Diodes Incorporated
AH293
LOW VOLTAGE HALL-EFFECT SMART FAN MOTOR
CONTROLLER
Package Outline Dimensions (All Dimensions in mm)
Sensor Location
AH293
Document number: DS31048 Rev. 6 - 2
7 of 8
www.diodes.com
June 2010
© Diodes Incorporated
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
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.
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.
B.
A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
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
AH293
Document number: DS31048 Rev. 6 - 2
8 of 8
www.diodes.com
June 2010
© Diodes Incorporated