AH375EWLA [ANACHIP]
Single Phase Hall Effect Latch; 单相霍尔效应锁存
| 型号： | AH375EWLA |
| 厂家： | 
ANACHIP CORP |
| 描述： | Single Phase Hall Effect Latch |
| 文件： | 总6页 (文件大小：196K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
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.
- 25mA maximum sinking output current
- Package: SIP3, SOT23
Applications
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).
- Brush-less DC Motor
- Brush-less DC Fan
- Revolution counting
- Speed measurement
Pin Assignments
Pin Descriptions
Name P/I/O Pin #
Description
375
2
Vdd
GND
OUT
P
P
O
1
2
3
Positive Power Supply
(Top view)
Ground
375
Output Pin
1 : Vdd
1
3
2 : GND
3 : OUT
(SOT23 package)
1
2
3
(SIP package)
Ordering Information
AH375 X - X X X
Packing
L : Lead Free Blank : Bulk
Wafer Body
Package
P: SIP3
Lead
Blank or
A~Z : if necessary
to specify
W: SOT23
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
R2
3K
1
3
Q1
NPN
Q2
NPN
OUTPUT
Vdd
GND
AH375
2
+
+
C2
C1
0.47uF
0.47uF
Brush-less DC Fan
Functional Block Diagrams
Vdd
1
Regulator
3
OUT
GND
Hall
plate
Amp
2
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
Symbol
Values
Unit
Supply Voltage
Vdd
20
V
Magnetic Flux Density
B
Unlimited
Output OFF Voltage
Output “On” Current
Operating Temperature Range
Storage Temperature Range
Maximum Junction Temp.
VDS
Id
Ta
Ts
Tj
30
25
V
Continuous
mA
°C
-40~+125
-65~+150
150
°C
°C
SIP-3L
550
mW
mW
Package Power Dissipation
Pd
SOT23-3L
SIP-3L
230
227
Thermal Resistance
θjc
°C/W
SOT23-3L
543
Electrical Characteristics (Ta=+ 25°C, Vdd =12V)
Characteristic
Supply Voltage
Symbol
Test Conditions
Min Typ Max
Units
V
mV
uA
mA
us
Vdd
—
2.2
-
20
Output Saturation Voltage Vds(sat) Iout=20mA
-
-
-
-
-
300 700
<0.1
2
0.1
0.1
Output Leakage Current
Ioff
Idd
tr
VDD =14V
Output Open
RL=820Ω, CL=20Pf
RL=820Ω, CL=20pF
10
4
1
Supply Current
Output Rise Time
Output Falling Time
tf
1
us
Test Circuit
12V
OUT
RL
CL
RL=820 Ohm
CL=20 pF
Test Circuit
Magnetic Characteristics (Ta=25°C, Vdd =2.5V to 20V)
(1mT=10Gauss)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Operate Point
Bop
5
-60
-
30
-30
60
60
-5
-
Gauss
Gauss
Gauss
Release Point
Hysteresis
Brp
Bhys
Anachip Corp.
www.anachip.com.tw
Rev.1.3 Jan. 09, 2006
3/6
AH375
Single Phase Hall Effect Latch
Output
S
S
Vdd
( off-state )
Marking side
Bhy
Turn off
Turn on
Marking side
( on-state )
N
N
Vsat
Vsat
( SOT23 )
( SIP3 )
Brp
0
Bop
( Magnetic flux density B )
Performance Characteristics (SIP3)
25
50
60
70
80
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
Ta (°C)
Pd (mW)
Ta (°C)
550
105
198
440
110
176
396
115
154
352
120
132
308
125
110
Pd (mW)
P ower D issipation C urve
Pd (m W )
600
500
400
300
200
100
0
0
25
50
75
100
125
150
Ta (。C )
Performance Characteristics (SOT23-3)
25
50
60
70
80
90
100 110 120 125 130 140 150
Ta (°C)
230 184 166 147 129 110
92
74
55
46
37
18
0
Pd (mW)
Pd (m W )
Pow er D issipation C urve
300
200
100
0
0
25
50
75
100
125
150
Ta (。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
ID Code:
375
a~z: Lead Free
XX YM X
A~Z: Non-Lead Free
a~z : Lead Free
YWW X
P3:AH375
Date code
Date code
Y : Year
Y : Year
M : Month(A~L)
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
45
º
0.38mm
0.7mm
1.57mm
1.47mm
0.41mm
0.41mm
3
2
1
1.27mm
4.17mm
4.04mm
1.82
mm
15.50mm
13.00mm
3.10mm
2.97mm
45
º
Anachip Corp.
www.anachip.com.tw
Rev.1.3 Jan. 09, 2006
5/6
AH375
Single Phase Hall Effect Latch
Package Information (Continued)
(2) Package Type: SOT23-3L
D
2
( Sensing point )
GAUGE PLANE
0.8mm
θ
L
L1
1
3
1.45mm
e1
VIEW C
e
1(4x)
θ
SEE VIEW C
2(4x)
θ
b(3x)
Dimensions In Millimeters
Dimensions In Inches
Symbol
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
Nom.
-
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
Min.
Nom.
Max.
A
A1
A2
b
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
-
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
-
-
1.10
-
-
2.90
1.60
2.80
-
0.043
-
C
-
D
0.114
0.063
0.110
-
E
HE
L
L1
M
e
0.60
0.78
1.90
0.95
5o
0.024
0.031
0.075
0.037
5o
e1
θ
θ1
θ2
3o
5o
7o
3o
5o
7o
6o
8o
10o
6o
8o
10o
Anachip Corp.
www.anachip.com.tw
Rev.1.3 Jan. 09, 2006
6/6
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