Copyright ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APX9142
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
High Sensitivity Hall Effect Sensor IC with Reverse Voltage Protection
The APX9142 is an integrated Hall Effect Sensor IC
designed for electric commutation of DC brushless
motor applications. The APX9142 still can operate at
as low as 3 volts. The APX9142 is available in low
cost TO -92M4 package with 3 different magnetic
ranks.
Pin Description
Ordering and Marking Information
Features
General Description
Applications
Brushless DC Fan
Revolution Counting
Brushless DC Motor
Speed Measurement
On-chip Reverse Voltage Protection
On-chip Hall Sensor
Low Operating Supply Voltage : 3 V
High Output Sinking Capability up to 400mA
Versatile sensitivity and hysteresis setting
Reliable and Rugged
4 pin TO-92M Package
Build-in Output Zener Diodes to Clamp the
Peak Output Voltage
High Sensitivilty Hall Effect Senser IC:50G,
65G, and 90G
A P X 9 1 4 2
M a g n e t ic R a n k
H a n d lin g C o d e
T e m p . R a n g e
P a c k a g e C o d e
M a g n e t ic R a n k
A T : | B o p , B r p | < 5 0 G a u s s
A : | B o p , B r p | < 6 5 G a u s s
B : | B o p , B r p | < 9 0 G a u s s
P a c k a g e C o d e
E : T O - 9 2 M 4
T e m p . R a n g e
E : - 2 0 to 8 5 C
H a n d lin g C o d e
P B : P la s t ic B a g T B : T a p e & B o x
T R : T a p e & R e e l
A P X 9 1 4 2 E :
A P X
9 1 4 2
X X X X X
X X X X X - D a te C o d e
APX9142
1 : V
DD
2
3
2 : DO
1
3 : DOB
4
4 : GND
Front View
Copyright ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APX9142
www.anpec.com.tw
2
Block Diagram
Gnd
DO
APX9142
Temperature
Compensated
Voltage
Regulator
Hall
Element
Current
Amplifier
Latch
Circuit
Output
Buffer 1
Hysteresis
Control
Sensitivity
Control
V
DD
Output
Buffer 2
DOB
Reverse
Voltage
Protection
Zener
Diodes
Zener
Diodes
Symbol
Parameter
Rating
Unit
V
DD
Supply Voltage
20
V
I
DD
Supply Current
15
mA
I
OUT
Output Current Continuous
Hold Current
Peak (Start Up)
400
600
800
mA
P
D
Maximum Power Dissipation
500
mW
T
A
Operating Ambient Temperature
-20 to 85
T
STG
Storage Temperature Range
-65 to 150
T
SOL
Soldering Temperature (10 Sec.)
260
C
APX9142
Symbol
Parameter
Test Condition
Min.
Typ. Max.
Unit
V
DD
Supply Voltage
Operating
3
20
V
I
OUT
=400mA, B>Bop
600
800
V
SAT
Output Saturation Voltage
I
OUT
=200mA, B>Bop
250
350
mV
V
Clamp
Clamp Output Voltage
30
V
I
DD
Supply Current
V
DD
=20V, Output Open
10
15
mA
I
Leak
a
Output Leakage Current
V
OUT
=20V, V
DD
=20V, B<Brp
<0.1
10
A
t
r
b
Output Rise Time
0.8
5
s
t
f
b
Output Fall Time
0.1
1
s
t
b
Switch Time Different
R
L
=820
,C
L
=20pF
2.5
7
s
Absolute Maximum Ratings
T
A
= 25
C unless otherwise noted
Electrical Characteristics
T
A
= 25
C, V
DD
=12V unless otherwise noted
Notes
a
: No leakage current spike when IC start-up
b
: use Figure 1
Copyright ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APX9142
www.anpec.com.tw
3
Magnetic Characteristics
T
A
= 25
C, V
DD
=12V unless otherwise noted
Rank
Maximum Operate Point
Bop
Maximum Release Point
Brp
Unit
AT
+40
-40
Gauss
A
+55
-55
Gauss
B
+80
-80
Gauss
Figure 1 : Switching Circuit for Output Rise Time and Fall Time Measurement
Test Information
Application Circuit
Signal Generator
V
DD
Scope
2
3
1
4
R
L1
R
L2
APX9142
Figure 2 Typical DC brushless fan application circuit
2
3
1
V
DD
+B
-B
APX9142
L1
L2
4
V
DD
C1
Copyright ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APX9142
www.anpec.com.tw
4
-60
-40
-20
0
20
40
60
0
5
10
15
20
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
-20
0
20
40
60
80
100
120
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
50
100
150
200
250
300
350
400
-20
-15
-10
-5
0
5
10
-30
-20
-10
0
10
20
30
Typical Characteristics
Supply Current vs. Supply Voltage
Supply Voltage (V)
Supply Current (mA)
Output Low Voltage vs Output Sink Current
Output Sink Current (mA)
Output Low Voltage (V)
Supply Current vs. Temperature
Switching Point vs. Supply Voltage
Switching Point (G)
Supply Voltage (V)
Temperature (C)
Supply Current (mA)
I
OUT
=200mA
Vcc=20V
Copyright ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APX9142
www.anpec.com.tw
5
-60
-40
-20
0
20
40
60
-20
0
20
40
60
80
100
120
Typical Characteristics (Cont.)
Switching Point vs. Temperature
Temperature (C)
Switching Point (G)
Vcc=12V
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