Anachip AH375OWLA Single phase hall effect latch Datasheet

AH375
Single Phase Hall Effect Latch
„ Features
„ General Description
- 2.2V to 20V DC operation voltage
- Temperature compensation
- Wide operating voltage range
- Open drain pre-driver
- 25mA maximum sinking output current
- Package: SIP3, SOT23
AH375 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 drain output. An internal
bandgap regulator is used to provide temperature
compensated supply voltage for internal circuits
and allows a wide operating supply range.
If a magnetic flux density larger than threshold Bop,
DO is turned on(low). The output state is held until
a magnetic flux density reversal falls below Brp
causing DO to be turned off (high).
„ Applications
- Brush-less DC Motor
- Brush-less DC Fan
- Revolution counting
- Speed measurement
„ Pin Assignments
375
„ Pin Descriptions
Name
Vdd
GND
OUT
2
(Top view)
375
1 : Vdd
1
3
(SOT23 package)
P/I/O
P
P
O
Pin #
1
2
3
Description
Positive Power Supply
Ground
Output Pin
2 : GND
3 : OUT
1 2 3
(SIP package)
„ Ordering Information
AH375 X - X X X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP3
W: SOT23
Lead
L : Lead Free
Packing
Blank : 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.1.3 Jan. 09, 2006
1/6
AH375
Single Phase Hall Effect Latch
„ Typical Application Circuit
+12V
D1
L1
R1
2K
L2
U1
1
Vdd
OUTPUT
R2
Q1
NPN
3
GND
2 AH375
Q2
NPN
3K
+ C1
0.47uF
+
C2
0.47uF
Brush-less DC Fan
„ Functional Block Diagrams
Vdd
1
Regulator
Hall
plate
23
OUT
2
GND
Amp
Anachip Corp.
www.anachip.com.tw
Rev.1.3 Jan. 09, 2006
2/6
AH375
Single Phase Hall Effect Latch
„ Absolute Maximum Ratings
( at Ta=25oC )
Characteristics
Supply Voltage
Magnetic Flux Density
Output OFF Voltage
Output “On” Current
Continuous
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temp.
SIP-3L
Package Power Dissipation
SOT23-3L
SIP-3L
Thermal Resistance
SOT23-3L
„ Electrical Characteristics
Characteristic
Symbol
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Falling Time
Vdd
Vds(sat)
Ioff
Idd
tr
tf
Symbol
Vdd
B
VDS
Id
Ta
Ts
Tj
Values
20
Unlimited
30
25
-40~+125
-65~+150
150
550
230
227
543
Pd
θjc
Unit
V
V
mA
°C
°C
°C
mW
mW
°C/W
(Ta=+ 25°C, Vdd =12V)
Test Conditions
—
Iout=20mA
VDD =14V
Output Open
RL=820Ω, CL=20Pf
RL=820Ω, CL=20pF
Min
Typ
Max
Units
2.2
-
300
<0.1
2
0.1
0.1
20
700
10
4
1
1
V
mV
uA
mA
us
us
„ Test Circuit
12V
OUT
RL
RL=820 Ohm
CL=20 pF
CL
Test Circuit
„ Magnetic Characteristics
Parameter
Operate Point
Release Point
Hysteresis
(Ta=25°C, Vdd =2.5V to 20V)
Symbol
Bop
Brp
Bhys
Anachip Corp.
www.anachip.com.tw
Min.
5
-60
-
Typ.
30
-30
60
(1mT=10Gauss)
Max.
Unit
60
Gauss
-5
Gauss
Gauss
Rev.1.3 Jan. 09, 2006
3/6
AH375
Single Phase Hall Effect Latch
S
( Output Voltage )
Output
S
Marking side
Marking side
Vdd
( off-state )
B hy
Turn off
Turn on
N
N
( SOT23 )
( on-state )
Vsat
( SIP3 )
Vsat
Brp
0
B op
( Magnetic flux density B )
„ 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.1.3 Jan. 09, 2006
4/6
AH375
Single Phase Hall Effect Latch
„ Marking Information
(1) SIP3
(2) SOT23
(Top View)
(Top View)
ID Code:
A~Z: Non-Lead Free
a~z : Lead Free
375
YWW X
ID code
A~Z: Non-Lead Free
a~z: Lead Free
XX YM X
P3:AH375
Date code
Y : Year
M : Month(A~L)
Date code
Y : Year
WW : Nth week
„ Package Information
(unit: mm)
(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.
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1.82
mm
15.50mm
13.00mm
Rev.1.3 Jan. 09, 2006
5/6
AH375
Single Phase Hall Effect Latch
„ Package Information (Continued)
(2) Package Type: SOT23-3L
D
C
2
HE
E
( Sensing point )
GAUGE PLANE
0.8mm
1
θ
L
3
L1
1.45mm
e1
VIEW C
e
b(3x)
Symbol
A
A1
A2
b
C
D
E
HE
L
L1
M
e
e1
θ
θ1
θ2
θ 2(4x)
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
0.60
0.70
0.83
2.00
1.05
10o
7o
10o
Anachip Corp.
www.anachip.com.tw
A
SEE VIEW C
A1
A2
M
θ 1(4x)
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
0.024
0.028
0.033
0.079
0.041
10o
7o
10o
Rev.1.3 Jan. 09, 2006
6/6
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