High Voltage 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: 3.8V~28V
- Output current: I
O(AVE)
= 400mA
- Package: SIP-5L, SOT89-5L
General Description
AH288 is a monolithic fan motor controller with Hall
sensor’s capability. It contains two complementary
open-drain 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 Configuration
288
( Front View )
1 : FG
2 : VCC
3 : DO
4 : DOB
5 : GND
1 2 3 4 5
Pin Descriptions
Symbol
FG
VCC
DO
DOB
GND
Description
Frequency generation
Input power
Output pin
Output pin
Ground
SIP-5L
VCC 1
GND 2
DO 3
SOT89-5L
288
5 FG
7 DOB
4
Ordering Information
AH288 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. 0.1 Jan 17, 2005
1/7
This Anachip version SC-59,
Recommended
Actual Package is datasheet replaced
SIP-5L and SOT23-5L Not New
SOT-23
Not Recommended for
notis
Design
with Diodes
New Design
AH288
for
Inc. datasheet
AH288
High Voltage 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 (SIP5)
D2
Vcc
(24V)
R
pu
D1
1
2
3
4
5
288
Coil2
GND
Coil1
FG
48V
C1=1uF
48V
24V DC Brush-less Fan with FG output function
Anachip Corp.
www.anachip.com.tw
2/7
Rev.0.1 Jan 17, 2005
This Anachip version
SC-59,
Recommended
Actual Package is
datasheet replaced
SIP-5L and SOT23-5L Not New
SOT-23
Not Recommended for
not
is
Design
with Diodes
New Design
AH288
for
Inc. datasheet
AH288
High Voltage Hall-Effect Smart Fan Motor Controller
Absolute Maximum Ratings
Characteristics
Supply Voltage
Output Current
Power Dissipation
Operating Temperature
Storage Temperature
Maximum Junction Temp.
Thermal Resistance
θjc
I
O(AVE)
P
D
Topr
Tstg
Tj
SIP5
SOT89-5
(Ta = 25°C)
Symbol
V
CC
SIP5/SOT89-5
I
O(PEAK)
SIP5
SOT89-5
Rating
30
400
700
550
800
-40 ~ 100
-55 ~ 150
150
227
156
Unit
V
mA
mW
°C
°C
°C
°C/W
°C/W
Electrical Characteristics
(
Ta = 25
°C,
V
CC
= 24V, unless otherwise notice)
Characteristics
Supply Voltage
Supply current
Output Leakage Current
Locked Protection On
Locked Protection Off
Output saturation voltage
Output On resistance
FG output Vds
Output Zener-breakdown Voltage
Symbol
Vcc
Icc
Ioff
Tlrp-on
Tlrp-off
V
OUT( sat )
Conditions
Operating
Operating
V
OUT
=24V
Min.
3.8
-
-
0.4
2.4
-
-
-
-
42
Typ.
-
2
< 0.1
0.46
2.76
450
680
2.25
0.3
55
Max.
28*
4
10
0.6
3.6
700
800
3.5
0.5
65
Unit
V
mA
µA
Sec
Sec
mV
ohm
V
V
Rds(on)
Vol
Vz
I
O
=200mA
I
O
=300mA
I
O
=200mA
I
O
=10mA
*Note:
Please watch out the current limit issue when the operation voltage is over 26.4V, because of the different efficiency in the coil.
Magnetic Characteristics
(
Ta = 25
°C,
V
CC
= 24V, unless otherwise specified)
(1mT=10 Gauss)
Characteristics
Operate Point
Release Point
Hysteresis
Symbol
Bop
Brp
Bhy
Min.
10
-60
-
Typ.
30
-30
60
Max.
60
-10
-
Unit
Gauss
Gauss
Gauss
Anachip Corp.
www.anachip.com.tw
3/7
Rev.0.1 Jan 17, 2005
This Anachip version
SC-59,
Recommended
Actual Package is
datasheet replaced
SIP-5L and SOT23-5L Not New
SOT-23
Not Recommended for
not
is
Design
with Diodes
New Design
AH288
for
Inc. datasheet
AH288
High Voltage Hall-Effect Smart Fan Motor Controller
Operating Characteristics
DOB
Output Voltage in Volts
24
20
16
12
8
ON
DO
24
20
16
12
8
RP
4
ON
RP
OFF
Output Voltage in Volts
OFF
OP
4
OP
Vsat
Vsat
Brp
0
Bop
Brp
0
Bop
Magnetic Flux Density in Gauss
Magnetic Flux Density in Gauss
S
Marking side
S
Marking side
N
( SIP5 )
N
( SOT89-5 )
Performance Characteristics (SIP5)
Ta (°C)
Pd (mW)
Ta (°C)
Pd (mW)
Pd (mW )
600
500
400
300
200
100
0
0
15
30
45
60
75
90
105
100
120
135
150
Ta (。C)
25
550
105
198
50
440
110
176
60
396
115
154
70
352
120
132
80
308
125
110
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
Power Dissipation Curve
Anachip Corp.
www.anachip.com.tw
4/7
Rev.0.1 Jan 17, 2005
This Anachip version
SC-59,
Recommended
Actual Package is
datasheet replaced
SIP-5L and SOT23-5L Not New
SOT-23
Not Recommended for
not
is
Design
with Diodes
New Design
AH288
for
Inc. datasheet
AH288
High Voltage Hall-Effect Smart Fan Motor Controller