AH293
Low Voltage 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. 0.5 Jun 18, 2004
1/9
Features
- On chip Hall sensor
- Rotor-locked shutdown
- Automatically restart
- Rotor-state detection (RD) output
- Buil t-in Zener protection for output driver
- Operating voltage: 1.8V~5.75 V
- Output current:
)
AVE
(
O
I
= 400 mA
- Package: SIP-5L, SOT23-5L, SOT89-5L
General Description
AH293 is a monolithic fan motor controller with Hall
sensor's capability. It contains two complementary
open-collector transistors for motor's coil driving,
automatic lock current shutdown, and recovery
protections. Besides, rotor-state detection (RD)
output is for speed detection.
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.
Pin Configuration
1 : RD
2 : VCC
3 : DO
4 : DOB
( Front View )
1
5
4
3
2
293
5 : GND
SIP-5L
1
3
2
5
4
SOT23-5
VCC GND
DO
DOB
RD
293
1
2
3
74
5
DOB
DO
GND
RD
VCC
SOT89-5L
AH293
Pin Descriptions
Symbol
Description
RD
Rotor-state detection
VCC Input
power
DO Output
pin
DOB Output
pin
GND Ground
Ordering Information
AH293 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
W: SOT23-5L
Y: SOT89-5L
AH293
Low Voltage Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.5 Jun 18, 2004
2/9
Block Diagram (SIP5)
Hall
Plate
Control Logic
Regulator
Lock shutdown
and
Automatic recovery
VCC
GND
DOB
DO
Amp.
2
3
4
5
1
RD
Typical Application Circuit
293
1
5
4
3
2
Vcc
(1.8V/5.75V)
Coil2
Coil1
R
pu
RD
(alarm)
GND
C1
10uF
+
D1
1.8V/5.75V DC Brush-less Fan with RD output function
AH293
Low Voltage Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.5 Jun 18, 2004
3/9
Absolute Maximum Ratings
(Ta = 25
C)
Characteristics
Symbol
Rating
Unit
Output Zener-breakdown Voltage
Vz
38
V
Operating Supply Voltage
V
CC
8
V
I
O(AVE)
400
Output Current
I
O(PEAK)
500
mA
SIP5 550
SOT23-5 230
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
= 5V, unless otherwise notice)
Characteristics
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
Vcc
Operating
1.8
5.75
V
Supply current
cc
I
Operating -
2.6
4.0
mA
Locked Protection On
Tlrp-on
0.4 Sec
Locked Protection Off
Tlrp-off
2.4 Sec
I
O
=180mA
- 300 -
Output saturation voltage
)
sat
(
OUT
V
I
O
=350mA
- 600 -
mV
Output On resistance
Rds(on)
1.75
ohm
RD output Vds
Vol
I
O
=10mA
0.5 V
Magnetic Characteristics
(
Ta = 25
C, V
CC
= 5V, 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
AH293
Low Voltage Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.5 Jun 18, 2004
4/9
Operating Characteristics
DOB DO
12
10
8
6
4
2
OFF
OP
RP
ON
Out
p
ut
Volt
ag
e in
V
o
lt
s
12
10
8
6
4
2
OFF
RP
OP
ON
O
u
tp
u
t
Vo
lt
a
g
e
i
n
Vo
l
t
s
Bop
Brp
0
Bop
Brp
0
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
Vsat
Vsat
Performance Characteristics (SIP5)
Ta (
C)
25
50
60
70
80
85
90
95
100
Pd
(mW)
550 440 396 352 308 286 264 242 220
Ta (
C)
105
110
115
120
125
130
135
140
150
Pd
(mW)
198 176 154 132 110 88 66 44 0
P o w e r D issip a tio n C u rve
0
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 )
AH293
Low Voltage Hall-Effect Smart Fan Motor Controller
Anachip Corp.
www.anachip.com.tw
Rev 0.5 Jun 18, 2004
5/9
Performance Characteristics (SOT23-5)
Ta (
C)
25
50
60
70
80
90
100
110
120
130 140 150
Pd (mW) 230 184 166 147
129
110
92 74 55 37 18 0
P o w e r D is s ip a tio n C u rv e
0
1 0 0
2 0 0
3 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 )
Performance Characteristics (SOT89-5)
Ta (
C)
25
50
60
70
75
80
85
90
95
100
Pd (mW)
800 640 576
512
480
448
416
384 352 320
Ta (
C)
105
110
115
120
125
130
135
140
145
150
Pd (mW)
288 256 224
192
160
128
96 64 32 0
P o w e r D i s s i p a t i o n C u r v e
0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0
9 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 )
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