AH282
Hall-Effect Smart Fan Motor Controller
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:
I
O( AVE )
= 300 mA
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.
- Package: SIP-5L, SOT89-5L
Pin Configuration
282
( Front View )
1 : FG
2 : VCC
3 : DO
4 : DOB
5 : GND
1 2 3 4 5
Pin Descriptions
Symbol
Description
FG
VCC
DO
DOB
GND
Frequency generation
Input power
Output pin
Output pin
Ground
SIP-5L
VCC 1
GND 2
DO 3
SOT89-5L
AH282
7 DOB
4
5 FG
Ordering Information
AH282 X - X X X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP-5L
Y: SOT89-5L
Lead
L : Lead Free
Blank: Normal
Packing
Blank : Tube or Bulk
A : Tape & Reel
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
AH282
Hall-Effect Smart Fan Motor Controller
Block Diagram (SIP5)
VCC
2
Lock shutdown
and
Automatic recovery
Regulator
3
Hall
Plate
DO
Amp.
Control Logic
4
DOB
5
GND
1
FG
Typical Application Circuit
D1
Vcc
(12V)
R
pu
+
282
Coil2
1
2
3
4
5
C1
10uF
Coil1
FG
GND
12V DC Brush-less Fan with FG output function
Anachip Corp.
www.anachip.com.tw
2/7
Rev 0.4 Apr 16, 2004
AH282
Hall-Effect Smart Fan Motor Controller
Absolute Maximum Ratings
Characteristics
(Ta = 25
°
C)
Symbol
Rating
Unit
Output Zener-breakdown Voltage
Operating Supply Voltage
Output Current
Power Dissipation
Operating Temperature
Storage Temperature
Maximum Junction Temp.
P
D
Vz
V
CC
I
O(AVE)
I
O(PEAK)
SIP5
SOT89-5
Topr
Tstg
Tj
38
28
300
400
550
800
-20 ~ 100
-55 ~ 150
150
V
V
mA
mW
°
C
°
C
°
C
Electrical Characteristics
(
Ta = 25
°
C, V
CC
= 12V, unless otherwise notice)
Characteristics
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
Supply current
Locked Protection On
Locked Protection Off
Output saturation voltage
Output On resistance
FG output Vds
Vcc
I
cc
Tlrp-on
Tlrp-off
V
OUT( sat )
Rds(on)
Vol
Operating
Operating
10
-
2
0.4
2.4
375
625
2.6
0.5
20
4
V
mA
Sec
Sec
I
O
=150mA
I
O
=250mA
I
O
=10mA
-
-
-
-
mV
ohm
V
Magnetic Characteristics
(
Ta = 25
°
C, V
CC
= 12V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Release Point
Hysteresis
Bop
Brp
Bhy
-
-60
-
30
-30
60
60
-
-
Gauss
Gauss
Gauss
Anachip Corp.
www.anachip.com.tw
3/7
Rev 0.4 Apr 16, 2004
AH282
Hall-Effect Smart Fan Motor Controller
Operating Characteristics
DOB
Output Voltage in Volts
Output Voltage in Volts
12
10
8
6
4
ON
Brp
0
2
Bop
OP
DO
12
10
8
6
4
RP
Brp
0
2
Bop
ON
RP
OFF
OFF
OP
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
P d (m W )
600
500
400
300
200
100
0
25
50
75
P o w e r D is s ip a tio n C u rve
220
198
176
154
132
100
125
150
T a (。 C )
Anachip Corp.
www.anachip.com.tw
4/7
Rev 0.4 Apr 16, 2004
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