APX9142
High Sensitivity Hall Effect Sensor IC with Reverse Voltage Protection
Features
•
•
•
•
•
•
•
•
•
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
General Description
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
APX9142
Front View
1 : V
DD
2 : DO
3 : DOB
4 : GND
Applications
•
•
•
•
Brushless DC Fan
Revolution Counting
Brushless DC Motor
Speed Measurement
1
2
3
4
Ordering and Marking Information
APX9142
H a n d l in g C o d e
Tem p. R ange
P ackage C ode
M a g n e t ic R a n k
M a g n e t ic R a n k
A T : | B o p , B rp | < 5 0 G a u s s
A : | B o p , B rp | < 6 5 G a u s s
B : | B o p , B rp | < 9 0 G a u s s
Package C ode
E : TO - 92M 4
Tem p. Range
E : - 2 0 to 8 5
°
C
H a n d l in g C o d e
P B : P la s t ic B a g
TB : Tape & Box
TR : Tape & Reel
A P X 9142 E :
APX
9142
XXXXX
X X X X X - D a te C o d e
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.
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
1
www.anpec.com.tw
APX9142
Block Diagram
Reverse
Voltage
Protection
APX9142
Zener
Diodes
V
DD
Temperature
Compensated
Voltage
Regulator
Hall
Element
Current
Amplifier
Latch
Circuit
Hysteresis
Control
Sensitivity
Control
Output
Buffer 1
Output
Buffer 2
DO
DOB
Zener
Diodes
Gnd
Absolute Maximum Ratings
Symbol
V
DD
I
DD
I
OUT
Parameter
Supply Voltage
Supply Current
Output Current –
T
A
= 25°C unless otherwise noted
Rating
20
15
400
600
800
500
-20 to 85
-65 to 150
260
Unit
V
mA
mA
mW
°C
P
D
T
A
T
STG
T
SOL
Continuous
Hold Current
Peak (Start Up)
Maximum Power Dissipation
Operating Ambient Temperature
Storage Temperature Range
Soldering Temperature (10 Sec.)
Electrical Characteristics
Symbol
V
DD
V
SAT
V
Clamp
I
DD
I
Leak
a
t
r
b
t
f
b
∆t
b
Parameter
Supply Voltage
Output Saturation Voltage
Clamp Output Voltage
Supply Current
Output Leakage Current
Output Rise Time
Output Fall Time
Switch Time Different
T
A
= 25°C, V
DD
=12V unless otherwise noted
Test Condition
APX9142
Min. Typ. Max.
3
20
600
800
250
350
30
10
15
<0.1
10
0.8
5
0.1
1
2.5
7
Unit
V
mV
V
mA
µA
µs
µs
µs
Operating
I
OUT
=400mA, B>Bop
I
OUT
=200mA, B>Bop
V
DD
=20V, Output Open
V
OUT
=20V, V
DD
=20V, B<Brp
R
L
=820Ω,C
L
=20pF
Notes
a
b
: No leakage current spike when IC start-up
: use Figure 1
2
www.anpec.com.tw
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APX9142
Magnetic Characteristics
Rank
AT
A
B
T
A
= 25°C, V
DD
=12V unless otherwise noted
Maximum Release Point
Brp
-40
-55
-80
Unit
Gauss
Gauss
Gauss
Maximum Operate Point
Bop
+40
+55
+80
Test Information
APX9142
1
Signal Generator
2
3
4
Scope
R
L2
V
DD
R
L1
Figure 1 : Switching Circuit for Output Rise Time and Fall Time Measurement
Application Circuit
APX9142
+B
-B
1
2
3
4
L1
L2
V
DD
V
DD
C1
Figure 2 Typical DC brushless fan application circuit
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
3
www.anpec.com.tw
APX9142
Typical Characteristics
Supply Current vs. Supply Voltage
10
Output Low Voltage vs Output Sink Current
0.7
0.6
Output Low Voltage (V)
-30
-20
-10
0
10
20
30
Supply Current (mA)
5
0
0.5
0.4
0.3
0.2
0.1
0
50
100
150
200
250
300
350
400
-5
-10
-15
-20
Supply Voltage (V)
Output Sink Current (mA)
Switching Point vs. Supply Voltage
60
9.5
Supply Current vs. Temperature
9
I
OUT
=200mA
40
Vcc=20V
Supply Current (mA)
Switching Point (G)
8.5
8
7.5
7
6.5
6
5.5
20
0
-20
-40
5
-60
0
5
10
15
20
-20
0
20
40
60
80
100
120
Supply Voltage (V)
Temperature (°C)
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
4
www.anpec.com.tw
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