AH286-YG-13 [DIODES]
HALL-EFFECT SMART FAN MOTOR CONTROLLER; 霍尔效应智能风扇电机控制器
| 型号： | AH286-YG-13 |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | HALL-EFFECT SMART FAN MOTOR CONTROLLER |
| 文件： | 总9页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Description
Pin Assignments
The AH286 is a single-chip solution for driving two-coil
brushless direct current (BLDC) fans and motors. The device
includes a Hall-effect sensor, dynamic offset correction and
two complementary open-drain output drivers with internal
Zener diode protection.
(Top View)
Vdd
1
2
RD
5
286
GND
To help protect the motor coils, the AH286 provides Rotor
Lock Protection which shuts down output drives if rotor lock is
detected. The device automatically re-starts when the rotor
lock is removed. A Rotor-lock Detect (RD) output flag allows
external monitoring of any motor locks.
DO 3
4
DOB
SOT89-5L
The AH286 is available in SOT89-5L package.
Features
Applications
•
•
•
•
•
Single-chip solution
•
•
Two-coil BLDC cooling fans
Low to medium voltage, low power BLDC motors
Operating Voltage: 3.8V to 20V
Built-in Hall sensor and input amplifier
Rotor-lock Detect (RD) flag
Rotor Lock Protection (Lock detection, output shutdown
and automatic re-start)
•
•
•
•
Built-in Zener protection for output driver
Average output current up to 500mA
Packaged in SOT89-5L
Green Molding Compound
Typical Application Circuit
D2
Vdd
(12V)
Rpu
D1
5
1
4
Coil2
RD
286
Coil1
2
3
D3
C3
R1
C1
R2
C2
GND
12V DC Brush-Less Fan with RD Output Function
Notes: 1. Typically it is recommended to us a 56 Ohm resistor for R1 and R2 and a 2.2μF E-Cap capacitor for C1, C2 and C3. These values
may need to be optimized depending on the coils used.
To help with IC protection it’s advised to add a Zener diode between Vdd and ground. The Zener diode should be chosen to help
prevent the supply voltage exceeding the maximum rating of the device.
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June 2010
© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
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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© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Absolute Maximum Ratings (TA = 25°C)
Symbol
Characteristics
Rating
Unit
Vdd
Supply Voltage
Output Current
24
500
V
IO (AVE)
IO (PEAK)
mA
mA
mW
°C
IO
700
800
-55 ~ 150
150
PD
TST
TJ
Power Dissipation
Storage Temperature
Maximum Junction Temperature
°C
θJA
Thermal Resistance Junction to Case (Note 2)
156
°C/W
TA
TJ
Tc
θJA
θJC
Notes: 2. θ should be confirmed with heat sink thermal resistance. If there is no heat sink contact, θ will almost be the same as θ ..
JA
JA
JC
Recommended Operating Conditions
Symbol
Characteristic
Supply Voltage
Operating Ambient Temperature
Conditions
Min
Max
Unit
Vdd
TA
Operating
Operating
3.8
-40
20
100
V
°C
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June 2010
© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Electrical Characteristics (TA = 25 °C, Vdd = 12V, unless otherwise specified)
Symbol
Characteristics
Conditions
Min
Typ.
Max
Unit
Idd
IOFF
Supply Current
Operating
-
-
2.0
< 0.1
0.5
4.0
10
mA
μA
Output Leakage Current
Rotor Lock Protection On Time
Rotor Lock Protection Off Time
VOUT = 24V
TRLP-ON
TRLP-OFF
0.4
2.4
-
0.6
3.6
500
900
1.67
-
Sec
Sec
3
IO = 300mA
IO = 500mA
IO = 300mA
IO = 10mA
375
625
1.25
0.5
VOUT(SAT)
Output Saturation Voltage
mV
-
RDS(ON)
VOL
Output On Resistance
RD Output Vds
-
ohm
V
-
Vz
Output Zener-Breakdown Voltage
35
42
60
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
H
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)
Magnetic Characteristics (TA = 25 °C, Vdd = 12V, unless otherwise specified, Note 4)
(1mT = 10 Gauss)
Symbol
Characteristics
Operate Point
Min
Typ.
Max
Unit
Bop
Brp
Bhy
10
-60
-
30
-30
60
60
-10
-
Gauss
Gauss
Gauss
Release Point
Hysteresis
Notes: 4. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
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June 2010
© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Operating Characteristics
DOB
DO
12
12
RP
ON
OFF
OP
OFF
RP
OP
ON
10
8
10
8
6
6
4
4
2
2
Vsat
Vsat
Brp
0
Bop
Brp
0
Bop
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
S
N
Marking
side
( SOT89-5L )
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June 2010
© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
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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© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Ordering Information
AH 286 - Y G - 13
Package
Green
Packing
Y : SOT89-5L
G : Green (Note 5)
13 : Tape & Reel
Bulk
13” Tape and Reel
Package Packaging
Device
Part Number
Part Number
Suffix
Code
(Note 6, 7)
Quantity
Quantity
Suffix
AH286-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;
286 Y W X
z represents 52 and 53 week
X : Internal code
A~Z : Green
2
3
SOT89-5L
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© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
Package Outline Dimensions (All Dimensions in mm)
Sensor Location
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© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
AH286
HALL-EFFECT SMART FAN MOTOR CONTROLLER
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DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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Copyright © 2010, Diodes Incorporated
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© Diodes Incorporated
AH286
Document number: DS31030 Rev. 12 - 2
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