Liteon Semiconductor Corporation
LSH41
Bipolar Hall Effect Position Sensor
GENERAL DESCRIPTION
The LSH41 is an integrated Hall effect latched sensor designed for electronic commutation of brush-less DC motor
applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that
amplifiers the Hall voltage, and a Schmitt to provide switching hysteresis for noise rejection, and open-collector
output. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal
circuits and allows a wide operating supply range.
A north pole of sufficient strength will turn the output ON. In the absence of a magnetic field, the output is OFF.
FEATURES
Wide operating voltage range: 3.0V~20V
Maximum output sink current 50mA
Package: SIP3
PIN CONFIGURATION
(Top
View)
3
2
1
Output
Gnd
Vcc
Name
Vcc
Gnd
Output
No.
1
2
3
Status
P
P
O
Description
IC Power Supply
IC Ground
It is low state during the N magnetic field
FUNCTIONAL BLOCK DIAGRAM
Figure1
1/6
Rev1.0
Liteon Semiconductor Corporation
LSH41
Bipolar Hall Effect Position Sensor
ABSOLUTE MAXIMUM RATINGS
Vcc Pin Voltage
Output OFF Voltage,Vce
Output ON Current(Io) (Continuous Current)
Power Dissipation (Ta=25℃)
Operating Temperature Range
Storage Temperature Range
Junction Temperature
Lead Temperature(Soldering,10 sec)
20V
30V
50mA
400mW
-40℃~+150℃
-65℃~+150℃
+150℃
+230℃
DC ELECTRICAL CHARACTERISTICS
Test Conditions
No use pin is open(Figure3)
No use pin is open(Figure3)
No use pin is open
Quiescent Supply current
Icc
Vcc:3.0V~20V(Figure3)
Output Saturation Voltage
V
SAT
Vcc=12V,Io=50mA(Figure3)
Note: Figure3 The IC output state is under N magnetic field.
Parameter
Minimum Operating Voltage
Maximum Operating Voltage
Symbol
Vcc
Vcc
Min.
Typ.
3.0
20.0
3.7
400
Max.
Unit
V
V
mA
mV
10
500
OUTPUT SATURATION VOLTAGE VS. OUTPUT CURRENT (IO) VCC=12V, TEMP. =25℃
Output Current (Io) Unit: mA
5
15
25
35
45
50
Saturation Voltage Unit: V
0.05
0.13
0.19
0.27
0.35
0.40
Note
AC ELECTRICAL CHARACTERISTICS
Parameter
Rise time
Fall time
Symbol
(t
r
)
(t
f
)
Test Conditions
RL=820Ω CL=20pF(Figure3)
RL=820Ω CL=20pF(Figure3)
Min.
Typ.
0.2
0.5
Max.
Unit
µS
µS
2/6
Rev1.0
Liteon Semiconductor Corporation
LSH41
Bipolar Hall Effect Position Sensor
MAGNETIC CHARACTERISTICS
LSH41-A
Parameter
Bop
Brp
Bhys
Min.
-70
140
Ta=-40℃~+150℃
Max.
+70
Unit
G
G
G
LSH41-B
Parameter
Bop
Brp
Bhys
Min.
-90
Ta=-40℃~+150℃
Max.
+90
180
Unit
G
G
G
LSH41-C
Parameter
Bop
Brp
Bhys
Min.
-120
Ta=-40℃~+150℃
Max.
+120
240
Vout
Unit
G
G
G
S
Mark
H
Vcc
Vd
Bh
L
Vsat
N
Brp
0
Bop
S
N
Magnetic flux density
Figure2
3/6
Rev1.0
Liteon Semiconductor Corporation
LSH41
Bipolar Hall Effect Position Sensor
Test Circuits
Figure3
TYPICAL APPLICATION CIRCUIT
V+=40V
100µF
0.1µF
500Ω
0.1µF
20µF
1
2
3
4
5
Speed Adjust
6
7
Supply Voltage
VrefOut
Hall"A"Input
Hall"B"Input
Hall"C"Input
FWD/RE Input
Speed Adjust Input
Cap Boost"A" 24
Gate Top"A" 23
Feedback"A" 22
Cap Boost"B" 21
Gate Top"B" 20
Feedback"B" 19
22Ω
10µF
H1
Vref
H2
H3
100µF
15V
BLDC Motor
0.1µF
Vref
22Ω
10µF
Vref
22Ω
22Ω
22Ω
22Ω
10µF
UF4002
(3 Places)
Foward/Reverse
Thermal Switch
0.1µF
Rosc 1KΩ
10KΩ
Cap Boost"C" 18
8 Oscillator Control
Gate Top"C" 17
9 (+)CurrentLimit(Brake) Feedback"C" 16
10 Analog Ground
Gate Bottom"A" 15
11 (-)CurrentLimit(Reset)Gate Bottom"B" 14
12 Power Ground
Gate Bottom"C" 13
Cosc
0.005µF
Counter Reset
1K
Filter
1K
Brake
Isense Resistor
Figure4
4/6
Rev1.0
Liteon Semiconductor Corporation
LSH41
Bipolar Hall Effect Position Sensor
HALL SENSOR LOCATION
The Figure 5 is hall sensor location, where marks the IC number.
X
Unit
Y
X
Y
2.1
1.55
mm
mm
Figure5 LSH41 Hall Sensor Location
ORDERING INFORMATION
MARKING INFORMATION
Part number
Internal code
Date code:
Y: Year (1=2001)
M: Month (1~9,O,N,D)
5/6
Rev1.0
stm32/stm8
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