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FEELING TECHNOLOGY
Single Hall Effect Latch
FS3144
Features
Wide operating voltage range: 3.0V to 28V Maximum output sink current 50mA Open-Collector pre-driver Power reverse polarity protection Available in SIP-3L package
Halogen Free
General Description
The FS3144 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 amplifies the Hall voltage, and a Schmitt trigger 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.
Block Diagram
Vdd
1
Regulator
Hall Sensor
3 Output
2 Gnd
Figure.1
This datasheet contains new product information. Feeling Technology 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 sales of the product.
Rev1.1 Jul. 12, 2011 P.1
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Pin Connection
[Top View]
FS3144
3. Output 2. Gnd 1. Vdd
Figure.2
Pin Descriptions
Name
I/O Pin No.
Description
Vdd P 1
Positive power supply
Gnd G 2
Ground
Output
O
3
Driver output
Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground
Functional Application Circuit
IA IB IC
Motor Driver &
Control Logic
Ia Ib Ic
HA HB HC
DC Motor Driver
M
: Hall Effect Sensor M : 3 Phase DC Motor
Figure.3
Rev1.1 Jul. 12, 2011 P.2
FEELING TECHNOLOGY
Absolute Maximum Ratings
Parameter
Symbol Conditions
Operating Temperature Storage Temperature DC Supply Voltage Supply Current Continuous Current Junction temperature Power Dissipation Thermal Resistance Lead Temperature
TOP TST VDD IDD IO(CONT) TJ PD θJC
-
SIP-3L SIP-3L 10sec
Min. -40 -65 3.0
Values Typ.
0.27
FS3144
Unit Max.
℃125 ℃150 V28 10 mA 50 mA ℃160
500 mW
℃/mW ℃260
ROOM TEMP
Pd( mW)
500 407 314 221 128 35 0
0
Power Dissipation Curve
25 50
160 oC
75 100 125 150 175
Temp. (o C )
Figure.4
150 ± 10 oC 90 ± 30 sec
255 ± 5 oC 10 ± 1 sec
2~5 oC /sec 2~5 oC /sec
SECOND
Soldering Condition
Figure.5
Rev1.1 Jul. 12, 2011 P.3
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FS3144
Recommended Operating Conditions
Parameter
Symbol
Conditions
Min.
Values Typ.
Max.
Supply Voltage
VDD - 3.0
28
Operating Temperature Range
TA
- -40
125
℃Electrical Characteristics VDD=12.0V, TA=25 (unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Values Typ.
Max.
Average Supply Current(no load) Output Saturation Voltage
IDD VSAT
Isink= 20mA
3.5 10 200 400
Output Rise time Output Fall time
tr
RL=500Ω, CL=20pF(Figure 7)
0.2
tf
RL=500Ω, CL=20pF(Figure 7)
20
- 0.75 - 150
Magnetic Characteristics
Parameter
Operate Points Release Points Hysteresis
Symbol
BOP BRP BHYST
Conditions
Min. +150 +70
60
Values Typ.
Max. +230 +160 100
Unit V
℃
Unit mA mV µs ns
Unit G G G
Hysteresis Characteristics
Vout
Output Voltage in Voltage
Vsat -S -S 0 +N +N
B (Magnetic)
Magnetic Flux Density in Gauss
Figure.6
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Test Circuit
VCC
RL
FS3144
1 Vcc
O utput 3
Gnd 2
FS3144
Vout
CL
Figure.7
Marking Information
[Top View]
3144
G
Halogen Free M ass Production Version H alf m onth (ex:A,B ~ X) Year (ex:2008 8)
Figure.8
Rev1.1 Jul. 12, 2011 P.5
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Package Dimension (Unit: mm) SIP-3L(Halogen Free)
FS3144
2.65mm
1.23mm
Sensor Location (TOP VIEW)
Rev1.1 Jul. 12, 2011 P.6
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Order Information
Part Number FS3144G1
Operating Temperature
℃ ℃-40 to +125
Package SIP-3L
MOQ 1000ea
FS3144
Rev1.1 Jul. 12, 2011 P.7
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