AH291-YA [DIODES]
Sensor/Transducer, Open-drain, 5 Pin, Plastic/epoxy,;
| 型号： | AH291-YA |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Sensor/Transducer, Open-drain, 5 Pin, Plastic/epoxy, |
| 文件： | 总9页 (文件大小：220K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
Features
General Description
- On chip Hall sensor
AH291 is a monolithic fan motor controller with Hall
sensor’s capability. It contains two complementary
open-collector drivers for motor’s coil driving,
automatic lock shutdown and restart function
relatively.
- Rotor-locked shutdown
- Automatically restart
- Built-in Zener protection for output driver
- Operating voltage: 1.8V~5.75 V
- Output current: IO(AVE) = 400 mA
To avoid coil burning, rotor-lock shutdown detection
circuit shut down the output driver if the rotor is
blocked and then the automatic recovery circuit will
try to restart the motor. These protecting actions are
repeated and periodic during the blocked period.
Until the blocking is removed, the motor recovers
running normally.
- Package: SIP-4L, SOT23-5L, SOT89-5L
Pin Assignment
DOB
4
Vdd
5
Front View
291
Vdd
1
2
NC
5
1 : Vdd
2 : DO
291
AH291
GND
3 : DOB
4 : GND
1
NC
2
3
DO 3
DOB
4
1
2
3
4
GND DO
SIP-4L
SOT89-5L
SOT23-5
Pin Descriptions
Name
Description
Vdd
Input power
Output pin
Output pin
Ground
DO
DOB
GND
NC
Not connected
Ordering Information
AH291 X - X X X
Packing
Wafer Body
Package
Lead
Blank or
P: SIP-4L
W: SOT23-5L
Y: SOT89-5L
L : Lead Free
Blank : Bulk
: Tape & Reel
(for SOT Packages Only)
A~Z : if necessary
to specify
A
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 1.0 Oct 5, 2005
1/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
Block Diagram (SIP4)
Vdd
1
Lock shutdown
and
Automatic recovery
Regulator
2
3
DO
Hall
Plate
Control Logic
Amp.
DOB
4
GND
Typical Application Circuit
D2
1.8V/5.75V
Vdd
291
D1
C3
L2
L1
1
2
4
3
GND
DOB
DO
R1
C1
R2
C2
Notes: R1, R2: typical 56Ω
2.2μF
C1, C2, C3: typical
The R, C value need to be fine tuned
base on coils design.
1.8V/5.75V brush-less DC fan
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
2/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
Absolute Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
Operating Supply Voltage
Vdd
8
V
IO(AVE)
IO(PEAK)
400
Output Current
mA
700
SIP4
550
Power Dissipation
PD
mW
SOT23-5
SOT89-5
230
800
Operating Temperature
Storage Temperature
Maximum Junction Temp.
Topr
Tstg
Tj
-20 ~ 100
°C
°C
°C
-55 ~ 150
150
Electrical Characteristics (Ta = 25 °C, Vdd = 5V, unless otherwise specified)
Characteristics
Supply Voltage
Supply Current
Lock Protection On
Lock Protection Off
Symbol
Conditions
Min.
Typ. Max. Unit
Vdd
Idd
Tlrp-on
Tlrp-off
Operating
Operating
1.8*
-
-
-
5.75
V
2.6
0.4
3
4.0
-
3.6
mA
Sec
Sec
2.4
IO=180mA
IO=350mA
-
-
-
-
300
600
1.75
15
-
-
-
-
Output Saturation Voltage
VOUT(sat)
mV
Output On resistance
Output Zener-breakdown Voltage
Rds(on)
Vz
ohm
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.
Magnetic Characteristics (Ta = 25 °C, Vdd = 5V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics
Operate Point
Release Point
Symbol
Min.
Typ.
Max.
Unit
Bop
Brp
Bhy
--
-60
--
30
-30
60
60
--
--
Gauss
Gauss
Gauss
Hysteresis
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
3/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
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
Performance Characteristics (SIP4)
25
50
60
70
80
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
Ta (°C)
Pd (mW)
Ta (°C)
550
105
198
440
110
176
396
115
154
352
120
132
308
125
110
Pd (mW)
Power Dissipation Curve
Pd (m W )
600
500
400
300
200
100
0
0
25
50
75
100
125
150
Ta (。 C)
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
4/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
Performance Characteristics (SOT23-5)
25
50
60
70
80
90
100 110 120 130 140 150
Ta (°C)
230 184 166 147 129 110
92
74
55
37
18
0
Pd (mW)
P ow er D issipation C urve
Pd (m W )
300
200
100
0
0
25
50
75
100
125
150
Ta (。 C )
Performance Characteristics (SOT89-5)
25
50
60
70
75
80
85
90
95
100
Ta (°C)
Pd (mW)
Ta (°C)
800
105
288
640
110
256
576
115
224
512
120
192
480
125
160
448
130
128
416
135
96
384
140
64
352
145
32
320
150
0
Pd (mW)
P d ( m W )
P o w e r D is s ip a t io n C u r v e
9 0 0
8 0 0
7 0 0
6 0 0
5 0 0
4 0 0
3 0 0
2 0 0
1 0 0
0
0
2 5
5 0
7 5
1 0 0
1 2 5
1 5 0
T a ( 。 C )
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
5/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
Marking Information
(1) SIP-4L
( Front View )
Part Number
291
X XX X x
Wafer Lot ID: L & a~z
is lead-free products
ID Code: A ~ Z
Nth week: 01~52
Year: "1" = 2001
"2" = 2002
(2)SOT23-5L
(3)SOT89-5L
(Top View)
ID code
A~Z: Non-Lead Free
a~z: Lead Free
XX YM X
RA:AH291
Date code
Y : Year
M :Month(A~L)
5
1
4
ID code
A~Z: Non-Lead Free
a~z : Lead Free
291 Y M X
M : Month: A~L
Y : Year: 0-9
2
3
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
6/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
Package Information
(1)SIP-4L
Active Area Depth
Package Sensor Location
Marking side
1.97mm
1.04mm
1
2
3
4
0.7mm
Package Dimension
5o
o
-7
14.25mm
+/-1.25mm
1.55mm
+/-0.1mm
0.38mm
3o-5o
1.03mm
+/-0.1
+/-0.03mm
3.65mm
+/-0.1mm
0.30mm
+/-0.1mm
0.41mm
0.46mm
+/-0.03mm
+/-0.03mm
o
5o
3o-5o
-7
1.27mm
+/-0.03mm
0.2mm Max.
1.42mm+/-0.1mm
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
7/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
(2)SOT23-5L
D
GAUGE PLANE
θ
L
L1
X
e1
VIEW C
e
θ1(4x)
SEE VIEW C
2(4x)
θ
b(5x)
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
Nom.
Max.
Min.
Nom.
Max.
A
A1
A2
b
1.05
0.05
1.00
0.25
0.08
2.70
1.50
2.60
0.30
0.50
1.80
0.85
0o
-
-
1.35
0.15
1.20
0.50
0.20
3.00
1.70
3.00
0.60
0.70
2.00
1.05
10o
0.041
0.002
0.039
0.010
0.003
0.106
0.059
0.102
0.012
0.020
0.071
0.033
0o
-
0.053
0.006
0.047
0.020
0.008
0.118
0.067
0.118
0.024
0.028
0.079
0.041
10o
-
1.10
-
0.043
-
C
-
-
D
E
2.90
1.60
2.80
-
0.114
0.063
0.110
-
HE
L
L1
e
0.60
1.90
0.95
5o
0.024
0.075
0.037
5o
e1
θ
θ1
θ2
X
3o
5o
7o
3o
5o
7o
6o
-
-
8o
10o
-
-
6o
-
-
8o
10o
-
-
1.067
0.432
0.042
0.017
Y
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
8/9
AH291
Low Voltage Hall-Effect Smart Fan Motor Controller
(3)SOT89-5L
A
C
D
F
B
E
K
J
F
L
I
H
G
Package Sensor Location
Y
X
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
4.40
4.05
1.50
1.30
2.40
0.80
Nom.
4.50
Max.
4.60
4.25
1.70
1.50
2.60
-
Min.
Nom.
0.177
0.163
0.063
0.055
0.098
-
Max.
A
B
C
D
E
F
G
H
I
0.173
0.159
0.059
0.051
0.094
0.031
0.181
0.167
0.067
0.059
0.102
-
4.15
1.60
1.40
2.50
-
3.00 Ref.
1.50 Ref.
0.46
0.118 Ref.
0.059 Ref.
0.018
0.059
0.015
5o Typ.
0.075
0.065
0.40
1.40
0.35
0.52
1.60
0.43
0.016
0.055
0.014
0.020
0.063
0.017
J
1.50
K
L
0.39
5o Typ.
1.90
X
Y
-
-
-
-
-
-
-
-
1.65
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Oct 5, 2005
9/9
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