AH280-SP-A [DIODES]
Sensor/Transducer, Open-collector, 8 Pin, Plastic/epoxy,;
| 型号： | AH280-SP-A |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | Sensor/Transducer, Open-collector, 8 Pin, Plastic/epoxy, |
| 文件： | 总7页 (文件大小：180K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH280
Hall-Effect Smart Fan Driver
Features
General Description
AH280 is the integrated Hall sensor owned two
complementary outputs for motor’s coil driving, auto
locked shutdown and auto restart functions.
Functional block diagram includes that a regulator
with temperature-compensated band-gap, an
on-chip Hall voltage generator, a comparator, a
Schmitt trigger and two current output drivers. The
regulator can provide wide operational voltage
range. The Hall voltage generator is to amplify the
Hall voltage due to Hall effect. A Schmitt trigger is
to provide switching Hysteresis for noise rejection.
To avoid coil burning, rotor-lock detection circuit will
shutdown the output driver if detect rotor-lock status.
A rotation recovery circuit is to restart the motor
after rotor-lock is removed. In addition, the auto
re-start time is flexible by adjusting the capacitance
(CT).
- On chip Hall plate
- Built-in Zener diode protection for output driver
- Built-in protection diode for power reverse
connecting
- Rotor-lock detection
- Automatically restart after release of motor
locking
- Adjustable auto restart time
- Operating voltage: 3.5~20 V
- Max Output current: IO(AVE) = 500mA
- Packages: SIP-5L, SOP-8L, SOP-8L EP
- Less external component
Pin Assignments
Pin Descriptions
Front View
SIP-5L
Symbol P/I/O Pin #
Description
Timing cap.
( Branded side)
CT
VCC
DO
I
1
2
3
4
5
P
O
O
P
Positive power supply
Driver output
DOB
GND
Driver inverted output
Ground
1 2 3 4 5
SIP-5L
SOP-8L/SOP-8L EP
Symbol
Pin #
Description
( Top view )
VCC
DO
1
Positive power supply
Driver output
VCC
DO
1
2
3
4
8
7
6
5
CT
2
3
DOB
NC
Driver inverted output
Not connected for SOP8
Timing cap.
NC
4,6,7
8
DOB
NC
NC
CT
GND
5
Ground
GND
SOP-8L / SOP-8L EP
This datasheet contains new product information. Analog 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. 0.7 Apr 16, 2004
1/7
AH280
Hall-Effect Smart Fan Driver
Block Diagram
Vcc
2
Regulator
3
4
DO
Hall
sensor
Control
Logic
Amp
DOB
Gnd
Lock Shutdown
Auto restart
circuits
5
1
CT
Ordering Information
AH280 X - X X X - X
Magnetic
Packing
Wafer Body
Package
Lead
Characteristics
A or B
Blank or
P: SIP-5L
L : Lead Free
Blank: Normal
Blank : Tube or Bulk
A~Z : if necessary
to specify
S: SOP-8L
A
: Tape & Reel
SP: SOP-8L EP
Application Circuit
C1
10µF
( Top view )
AH280
D
Coil1
Coil2
Power
input
CT
( DC Brush-less Fan )
Anachip Corp.
www.anachip.com.tw
Rev. 0.7 Apr 16, 2004
2/7
AH280
Hall-Effect Smart Fan Driver
Absolute Maximum Ratings (TA = 25°C)
Characteristics
Symbol
VCC
Rating
20
Unit
Operating Supply Voltage
V
IO (AVE)
500
Output Current
mA
IO (PEAK)
SIP-5L / SOP-8L
SOP-8L EP
TOPR
800
550
1000
-20~85
-55~150
40
Power Dissipation
PD
mW
Operating Temperature
Storage Temperature
DO(DOB) Vceo D.C. Voltage
°C
°C
Vdc
TSTG
Vceo
Electrical Characteristics (TA=25°C, VCC=12V, CT=1µF)
Characteristics
Symbol
Test Conditions
Min, Typ. Max.
Unit
Internal Zener-protected Voltage
VZ
-
-
46
15
-
V
VCC=5V
10
20
Output1 “ON”
VCC=12V
Quiescent current
IQ
mA
10
17
20
Output1 “ON”
-
-
0.4
0.6
0.7
2.4
0.5
2.0
1.0
250
5
-
-
IO=0.2A, TJ=25°C
IO=0.4A, TJ=25°C
IO=0.5A, TJ=25°C
-
DO
Output saturation voltage
Charge current
V
DOB
-
-
µA
µA
ICHG
IDHG
VCL
VCP
TON
DR
-
-
Discharge current
-
-
-
Automatic
self-rotation
recovery
circuit
Clamp Voltage
Comparator Voltage
CT=.47µF
-
-
Limiting voltage
V
-
-
On time
Duty ratio
-
-
ms
-
TOFF / TON
3
7
Magnetic Characteristics
A grade
(1mT = 10 Gauss)
TA= -20°C to +85°C
Characteristics
Symbol
Unit
Min.
Typ.
Max.
Operate Point
Release Point
Hysteresis
BOP
BRP
BHYS
10
-60
-
-
-
60
-10
-
G
G
G
100
B grade
TA= -20°C to +85°C
Characteristics
Symbol
Unit
Min.
Typ.
Max.
Operate Point
Release Point
Hysteresis
BOP
BRP
BHYS
10
-80
-
-
-
80
-10
-
G
G
G
100
Anachip Corp.
www.anachip.com.tw
Rev. 0.7 Apr 16, 2004
3/7
AH280
Hall-Effect Smart Fan Driver
Rotation detection
The automatic restart circuit detects a motor lock
condition and automatically turns off the output
current. When the lock condition is cleared, the IC
automatically restarts and allows the motor to run.
In the AH280, automatic restart is performed in the
following manner.
A motor lock condition is
detected when the Hall signal stops switching.
The output is ON when CT pin is being charged,
and OFF when CT pin is being discharged.
Hall input
ON
OFF
Motor output
CT
clamp
voltage
CT
comparator
CT
voltage
Motor locked
cleared
Motor locked
Motor locked detected
Toff*
Ton*
Reverts to normal operation
Output ON time (Ton) and OFF time (Toff)
Determined by the CT pin capacitor
Where
C is the capacitance of the CT pin external capacitor
V
CL is the CT pin clamp voltage
V
CP is the CT pin comparator voltage
I
CHG is the CT pin charge current
IDHG is the CT pin discharge current
C × (V
CL
− V
CP
)
Ton=
Toff=
(sec)
(sec)
I
CHG
C × (V
− V
)
CL
CP
I
DHG
Anachip Corp.
www.anachip.com.tw
Rev. 0.7 Apr 16, 2004
4/7
AH280
Hall-Effect Smart Fan Driver
Performance Characteristics (SIP-5L / SOP-8L)
Ta (°C)
25 50 60 70 80 85 90 95 100
105
110
115
120
Pd (mW) 550 413 358 303 248 220 193 165 138
110
83
55
28
Power Dissipation Curve
Pd (mW )
600
500
400
300
200
100
0
0
25
50
75 85
100
125
150
Ta (。C)
Performance Characteristics (SOP-8L EP)
Ta (°C)
25 50 60 70 80 85 90 95 100
105
110
115
120
Pd (mW) 1000 800 720 640 560 520 480 440 400
360 320
280 240
P o w e r D is s ip a tio n C u rv e
P d (m W )
1 0 0 0
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
2 5
5 0
7 5
1 0 0
1 2 5
1 5 0
T a (。 C )
8 5
Marking Information
(1) SIP-5L
(2) SOP-8L / SOP-8L EP
( Front View )
( Front View )
Part Number
Blank: normal
Part Number
280
AH280
Blank : normal
L: Lead Free Package
ID Code
X XX X X
X XX X X
L : Lead Free Package
ID Code
Nth week: 01~52
Year: "1" = 2001
"2" = 2002
Nth week: 01~52
Year: "1" = 2001
"2" = 2002
Anachip Corp.
www.anachip.com.tw
Rev. 0.7 Apr 16, 2004
5/7
AH280
Hall-Effect Smart Fan Driver
Package Information
(1) Package Type: SIP-5L
unit: mm / [inch]
5.22 ± 0.1
[0.206 ± 0.003]
2° ~ 3°
2-0.3C
[0.079-0.012C]
2° ~ 5°
1.55 ± 0.1
[0.061± 0.003]
0.73 ± 0.1
4.2 REF
[0.029 ± 0.003]
[0.165 REF]
2° ~ 3°
2° ~ 5°
3.65 ± 0.1
[0.144 ± 0.003]
0.48 ± 0.1
[0.019 ± 0.003]
14.3 ± 0.3
0.38 ± 0.03
[0.563 ± 0.012]
[0.015 ± 0.001]
0.38 ± 0.03
[0.015 ± 0.001]
0.95 ± 0.03
[0.037 ± 0.001]
Location of sensing point
2.006 mm
[0.079 inch]
( Top View)
1.016 mm
[0.04 inch]
1
2
3
4
5
Anachip Corp.
www.anachip.com.tw
Rev. 0.7 Apr 16, 2004
6/7
AH280
Hall-Effect Smart Fan Driver
(2) Package Type: SOP-8L ( Normal / Expose Pad )
X
Expose Pad
L
VIEW "A"
0.015x45
D
7 (4X)
7 (4X)
e
B
VIEW "A"
y
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min.
1.40
0.10
1.30
0.33
0.19
4.80
3.70
-
Nom.
1.60
-
Max.
1.75
0.25
1.50
0.51
0.25
5.30
4.10
-
6.20
1.27
0.10
8°
Min.
Nom.
0.063
-
Max.
0.069
A
A1
A2
B
0.055
0.040
0.051
0.013
0.0075
0.189
0.146
-
0.100
0.059
0.020
0.010
0.209
0.161
-
0.244
0.050
0.004
8°
1.45
0.41
0.20
5.05
3.90
1.27
5.99
0.71
-
0.057
0.016
0.008
0.199
0.154
0.050
0.236
0.028
-
C
D
E
e
H
L
5.79
0.38
-
0.228
0.015
-
y
0°
-
0°
-
θ
(Expose pad)
X
Y
-
-
2.92
2.34
-
-
-
-
0.115
0.092
-
-
Sensor location
1.860 mm
2.132 mm
Anachip Corp.
www.anachip.com.tw
Rev. 0.7 Apr 16, 2004
7/7
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