AH282
Hall-Effect Smart Fan Motor Controller
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. 0.4 Apr 16, 2004
1/7
Features
- On chip Hall sensor
- Rotor-locked shutdown
- Automatically restart
- Frequency generator (FG) output
- Buil t-in Zener protection for output driver
- Operating voltage: 10V~20V, driver start up: 8V
(minimum)
- Output current:
)
AVE
(
O
I
= 300 mA
- Package: SIP-5L, SOT89-5L
Pin Configuration
1 : FG
2 : VCC
3 : DO
4 : DOB
( Front View )
1
5
4
3
2
282
5 : GND
General Description
AH282 is a monolithic fan motor controller with Hall
sensor's capability. It contains two complementary
open-collector transistors as motor coil drivers,
automatic lock current shutdown, and recovery
protections. Additional, frequency generator (FG)
output is for speed detection relatively.
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. This function repeats while
the rotor is blocked. Until the blocking is removed,
the motor recovers running normally.
Pin Descriptions
Symbol
Description
FG
Frequency generation
VCC Input
power
DO Output
pin
DOB Output
pin
GND Ground
SIP-5L
1
2
3
74
5
DOB
DO
GND
FG
VCC
SOT89-5L
AH282
Ordering Information
AH282 X - X X X
Packing
Blank : Tube or Bulk
A : Tape & Reel
P: SIP-5L
Package
Lead
L : Lead Free
Blank: Normal
Wafer Body
Blank or
A~Z : if necessary
to specify
Y: SOT89-5L
AH282
Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.4 Apr 16, 2004
2/7
Block Diagram (SIP5)
Hall
Plate
Control Logic
Regulator
Lock shutdown
and
Automatic recovery
VCC
GND
DOB
DO
Amp.
2
3
4
5
1
FG
Typical Application Circuit
282
1
5
4
3
2
Vcc
(12V)
Coil2
Coil1
R
pu
FG
GND
C1
10uF
+
D1
12V DC Brush-less Fan with FG output function
AH282
Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.4 Apr 16, 2004
3/7
Absolute Maximum Ratings
(Ta = 25
C)
Characteristics
Symbol
Rating
Unit
Output Zener-breakdown Voltage
Vz
38
V
Operating Supply Voltage
V
CC
28
V
I
O(AVE)
300
Output Current
I
O(PEAK)
400
mA
SIP5 550
Power Dissipation
P
D
SOT89-5 800
mW
Operating Temperature
Topr
-20 ~ 100
C
Storage Temperature
Tstg
-55 ~ 150
C
Maximum Junction Temp.
Tj
150
C
Electrical Characteristics
(
Ta = 25
C, V
CC
= 12V, unless otherwise notice)
Characteristics
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
Vcc
Operating
10
20
V
Supply current
cc
I
Operating -
2
4
mA
Locked Protection On
Tlrp-on
0.4 Sec
Locked Protection Off
Tlrp-off
2.4 Sec
I
O
=150mA
- 375 -
Output saturation voltage
)
sat
(
OUT
V
I
O
=250mA
- 625 -
mV
Output On resistance
Rds(on)
2.6
ohm
FG output Vds
Vol
I
O
=10mA
0.5 V
Magnetic Characteristics
(
Ta = 25
C, V
CC
= 12V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Bop
-
30
60
Gauss
Release Point
Brp
-60
-30
-
Gauss
Hysteresis Bhy
-
60
-
Gauss
AH282
Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.4 Apr 16, 2004
4/7
Operating Characteristics
DOB DO
12
10
8
6
4
2
OFF
OP
RP
ON
Outpu
t
V
o
lt
ag
e in
V
o
lt
s
12
10
8
6
4
2
OFF
RP
OP
ON
O
u
t
p
ut
V
o
lt
a
g
e
in Volt
s
Bop
Brp
0
Bop
Brp
0
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
Performance Characteristics (SIP5)
Ta (
C)
25
50
60
70
80
85
90
95
100
105
110
115
120
Pd
(mW) 550 440 396 352 308 286 264 242
220
198
176 154 132
P o w e r D issip a tio n C u rve
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
0
2 5
5 0
7 5
1 0 0
1 2 5
1 5 0
T a ( C )
P d (m W )
AH282
Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.4 Apr 16, 2004
5/7
Marking Information
(1)SIP-5L
282
Part Number
Year:
( Top View )
"2" = 2002
"1" = 2001
X XX X X
Nth week: 01~52
ID Code
Blank : normal
L : Lead Free Package
~
(2)SOT89-5L
1
2
3
5
7
4
282 Y M X
M : Month: A~L
Y : Year: 0-9
ID code
A~Z: Non-Lead Free
a~z : Lead Free
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