Anachip AH373-PLA Internal pull-up hall effect latch Datasheet

AH373
Internal Pull-up Hall Effect Latch
„ Features
„ General Description
- Bipolar Hall effect latch sensor
- 2.2V to 20V DC operation voltage
- Built-in pull-up resistor
- 25mA output sink current
- Operating temperature: −40°C ~ +125°C
- Package: SIP3, SOT23
AH373 is a single-digital-output Hall-effect sensor
with pull-up resistor for high temperature operation.
The device includes an on-chip Hall voltage
generator for magnetic sensing, an amplifier to
amplify Hall voltage, and a comparator to provide
switching hysteresis for noise rejection, and an
output driver with a pull-up resistor (Rpu). An
internal bandgap regulator is used to provide
temperature compensated supply voltage for
internal circuits and allows a wide operating supply
range. While the magnetic flux density (B) is larger
than operate point (Bop), the OUT pin turns on
(low). If B moves toward release point (Brp), the
OUT pin is latched “on” state prior to B < Brp. When
B < Brp, the OUT pin go into “ off ” state.
„ Applications
- Rotor position sensing
- Current switch
- Encoder
- RPM detection
„ Pin Descriptions
„ Pin Assignment
373
2
(Top view)
373
1 : VCC
1
3
Name
Description
VCC
Positive Power Supply
GND
Ground
OUT
Output Pin
2 : GND
( SOT23 package)
3 : OUT
1 2 3
(SIP3 package)
„ Ordering Information
AH373 X - X X X
Wafer Body
Package
Lead
Packing
Blank or
A~Z : if necessary
to specify
P: SIP-3L
W: SOT23-3L
L : Lead Free
Blank: Normal
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. 0.0 Jan 31, 2005
1/6
AH373
Internal Pull-up Hall Effect Latch
„ Block Diagram
VCC
1
Rpu
Regulator
23 OUT
Hall
plate
Amp
2
GND
„ Functional Application Circuit
IA
IB
M
Digital Hall Effect Sensor
IC
Driver
M: Three Phase Hall Motor
Ia
Ib
Ic
&
Control Logic
HA
RPM sensing
HB
HC
Hall Motor Driver
3 Phase Hall Motor
„ Absolute Maximum Ratings ( at Ta= 25°C )
Characteristics
Symbol
VCC
Vout (off)
Io (sink)
Top
Tstg
Supply voltage
Output “off ” voltage
Output “on” current
Operating temperature range
Storage temperature range
Power dissipation
SIP
SOT23
PD
Anachip Corp.
www.anachip.com.tw
Values
20
28
25
-40~+125
-65~+150
550
230
Unit
V
V
mA
°C
°C
mW
mW
Rev 0.0 Jan 31, 2005
2/6
AH373
Internal Pull-up Hall Effect Latch
„ Electrical Characteristics ( Ta= 25°C, Vcc=12V )
Characteristics
Supply voltage
Output saturation voltage
Output Leakage Current
Supply current
Internal pull-up resistor
Symbol
Vcc
Vout(sat)
Ioff
Icc
Rpu
Conditions
—
Iout =20mA
B < Brp
OUT ”OFF”
—
Min.
2.2*
7
Typ.
300
<0.1
2
10
Max.
20
400
10
4
13
Unit
V
mV
uA
mA
KΩ
*Note: The output of IC will be switched after the supply voltage is over 2.2V, but the magnetic characteristics won't be normal until the
supply is over 2.5V.
„ Magnetic Characteristics
(Ta=25°C, Vcc=2.5V to 20V)
Parameter
Operate Point
Release Point
Hysteresis
Symbol
Bop
Brp
Bhys
Min.
5
-60
-
(1mT=10Gauss)
Max.
Unit
60
Gauss
-5
Gauss
Gauss
Typ.
30
-30
60
„ Operating Characteristics
S
S
Marking side
Marking side
N
N
( SOT23 )
( SIP3 )
( Output Voltage )
Output
Vcc
( off-state )
Turn off
Bhy
Turn on
( on-state )
Vsat
Vsat
Brp
0
Bop
( Magnetic flux density B )
Anachip Corp.
www.anachip.com.tw
Rev 0.0 Jan 31, 2005
3/6
AH373
Internal Pull-up Hall Effect Latch
„ Performance Characteristics (SIP3)
25
550
105
198
Ta (°C)
Pd (mW)
Ta (°C)
Pd (mW)
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
P o w e r D is s ip a tio n C u rv e
P d (m W )
600
500
400
300
200
100
0
0
25
50
75
100
125
150
T a (。 C )
„ Performance Characteristics (SOT23-3)
Ta (°C)
25
50
60
70
80
90
100
110
120
125
130
140
150
Pd (mW)
230
184
166
147
129
110
92
74
55
46
37
18
0
P d (m W )
P o w e r D is s ip a tio n C u rv e
300
200
100
0
0
25
50
75
100
125
150
T a (。 C )
Anachip Corp.
www.anachip.com.tw
Rev 0.0 Jan 31, 2005
4/6
AH373
Internal Pull-up Hall Effect Latch
„ Marking Information
(1) SIP3
(2) SOT23
(Top View)
(Top View)
ID Code:
A~Z: Non-Lead Free
a~z : Lead Free
373
YWW X
ID code
A~Z: Non-Lead Free
a~z: Lead Free
XX YM X
P2:AH373
Date code
Y : Year
M :Month(A~L)
Date code
Y : Year
WW : Nth week
„ Package Information
(1) Package Type: SIP-3L
0.51mm
NOM
2.00mm
1.15mm
BRANDED
SURFACE
1
2
3
Sensor Location
Active Area Depth
Package Dimension
45º
0.38mm
0.7mm
1.57mm
1.47mm
0.41mm
0.41mm
3
1.27mm
4.17mm
4.04mm
2
1
45º
3.10mm
2.97mm
Anachip Corp.
www.anachip.com.tw
1.82
mm
15.50mm
13.00mm
Rev 0.0 Jan 31, 2005
5/6
AH373
Internal Pull-up Hall Effect Latch
(2) Package Type: SOT23-3L
D
2
HE
E
M
( Sensing point )
0.8mm
1
3
SEE VIEW C
1.45mm
e1
e
θ1(4x)
3X
GAUGE PLANE
A
A2
0.10 C
L
SEATING PLANE
A1
θ 2(4x)
VIEW C
b(3x)
Symbol
A
A1
A2
b
C
D
E
HE
L
L1
M
e
e1
θ
θ1
θ2
Dimensions In Millimeters
Min.
1.05
0.05
1.00
0.25
0.08
2.70
1.50
2.60
0.30
0.50
0.73
1.80
0.85
0o
3o
6o
Nom.
1.10
2.90
1.60
2.80
0.60
0.78
1.90
0.95
5o
5o
8o
Max.
1.35
0.15
1.20
0.50
0.20
3.00
1.70
3.00
0.55
0.70
0.83
2.00
1.05
10o
7o
10o
Anachip Corp.
www.anachip.com.tw
θ
L1
Dimensions In Inches
Min.
0.041
0.002
0.039
0.010
0.003
0.106
0.059
0.102
0.012
0.020
0.029
0.071
0.033
0o
3o
6o
Nom.
0.043
0.114
0.063
0.110
0.024
0.031
0.075
0.037
5o
5o
8o
Max.
0.053
0.006
0.047
0.020
0.008
0.118
0.067
0.118
0.022
0.028
0.033
0.079
0.041
10o
7o
10o
Rev 0.0 Jan 31, 2005
6/6
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