AH3373
Document number: DS38918 Rev. 2 - 2
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AH3373
HIGH VOLTAGE HIGH SENSITIVITY
HALL EFFECT UNIPOLAR SWITCH
Description
The AH3373 is a high voltage high sensitivity Hall Effect Unipolar
switch IC designed for proximity, position and level sensing in
industrial and consumer home appliances and personal care
applications. To support wide range of demanding applications, the
design has been optimized to operate over the supply range of 3.0V
to 28V. With chopper stabilized architecture and an internal bandgap
regulator to provide temperature compensated supply for internal
circuits, the AH3372 provides a reliable solution over the whole
operating range. For robustness and protection, the device has a
reverse blocking diode with a Zener clamp on the supply. The output
has an over current limit and a Zener clamp.
.
The single open drain output can be switched on with South pole of
sufficient strength. When the magnetic flux density (B) perpendicular
to the package is larger than the operate point (BOP) the output is
switched on (pulled low) and is held on until magnetic flux density B is
lower than the release point (BRP). The output remains switched off
for North pole fields to or no magnetic fields.
The magnetic operating and release polarity is opposite for SOT23
and SC59 packages. SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk
Pack) packages require south pole to the part marking side to operate
while SC59 requires south pole to the non-part marking side.
Features
• Unipolar Operation
• High Sensitivity: BOP and BRP of +55G and +35G Typical
• Single Open Drain Output with Over Current Limit
• 3.0V to 28V Operating Voltage Range
• Chopper Stabilized Design Provides
o Superior Temperature Stability
o Minimal Switch Point Drift
o Enhanced Immunity to Stress
• Good RF Noise Immunity
• Reverse Blocking Diode
• Zener Clamp on Supply and Output Pins
• -40C to +125C Operating Temperature
• ESD: HBM ＞ 6kV
• Industry Standard SC59, SOT23 and SIP-3 (Ammo Pack), SIP-3
(Bulk Pack) Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(TOP View)
1 VDD
GND 2 3 OUTPUT
SC59 and SOT23
(TOP View)
SIP-3 (Bulk Pack)
Applications
• Position and Proximity Sensing in Consumer Home Appliances,
Building Automation, Office Equipments and Industrial Applications
• Open and Close Detect
• Position Detect
• Level Detect
• Flow Meters
• Contact-less Switches
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AH3373
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AH3373
Typical Applications Circuit
AH3373
3.0V to 28V
OUTPUT
GND
RL
CIN
VDD
Note: 4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF.
RL is the pull-up resistor.
Pin Descriptions
Package: SC59, SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
Pin Number
Pin Name
Function
1
VDD
Power Supply Input
2
GND
Ground
3
OUTPUT
Output Pin
Functional Block Diagram
Control
Current
Limit
Sample and
Hold
Low-Pass Filter
Amp Amp
Power
switch
To All Subcircuits
OUTPUT
VDD
GND
Dynamic Offset
Cancellation
AH3373
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AH3373
Absolute Maximum Ratings (Note 5 & 6) (@TA = +25°C, unless otherwise specified.)
Symbol
Characteristic
Value
Unit
VDD
Supply Voltage (Note 6)
32
V
VDDR
Reverse Supply Voltage (Note 6)
-32
V
VOUT_MAX
Output Off Voltage (Note 6)
32
V
IOUT
Continuous Output Current
60
mA
IOUT_R
Reverse Output Current
-50
mA
B
Magnetic Flux Density
Unlimited
PD
Package Power Dissipation
SIP-3(Ammo Pack),
SIP-3(Bulk Pack)
550
mW
SC59 and SOT23
230
Ts
Storage Temperature Range
-65 to +165
C
TJ
Maximum Junction Temperature
+150
C
ESD HBM
Electros Static Discharge Withstand - Human Body Model (HBM)
6
kV
Notes: 5. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
6. The absolute maximum VDD of 32V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to
operate the device at the absolute maximum rated conditions for any period of time.
Recommended Operating Conditions (@TA = -40°C to +125°C , unless otherwise specified.)
Symbol
Parameter
Condition
Rating
Unit
VDD
Supply Voltage
Operating
3.0 to 28
V
TA
Operating Temperature Range
Operating
-40 to +125
C
Electrical Characteristics (Note 7 & 8) (@TA = -40°C to +125°C , VDD = 3V to 28V, unless otherwise specified.)
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VOUT_ON
Output ON Voltage
IOUT = 20mA, B > BOP
-
0.2
0.4
V
ILKG
Output Leakage Current
(When output is off)
VOUT = 28V, B < BRP, Output off
-
<0.1
10
µA
IDD
Supply Current
Output open, TA = +25C
-
3
3.5
mA
Output open, TA = -40 to +125C
-
-
4
mA
IDD_R
Reverse Supply Current
VDD = -18V, TA = -40 to +125C
-
-0.01
1
mA
VDD = -28V, TA = -40 to +125C
-
-0.01
1.5
mA
tP_ON
Device Power-On Time (Start-up time)
VDD >= 3V, B > BOP (Note 7)
-
10
-
µs
fC
Chopping Frequency
-
800
-
kHz
tD
Response Time Delay
(Time from magnetic threshold
reached to the start of the output rise
or fall)
(Note 9)
-
3.75
-
µs
tR
Output Rising Time
(External pull-up resistor RL and load
capacitance dependent)
RL = 1kΩ, CL = 20pF
-
0.2
1
µs
tF
Output Falling Time
(Internal switch resistance and load
capacitance dependent)
RL = 1kΩ, CL = 20pF
-
0.1
1
µs
IOCL
Output Current Limit
B > BOP, (Note 10 )
30
-
55
mA
VZ
Zener Clamp Voltage
IDD = 5mA
28
-
-
V
Notes: 7. When power is initially turned on, VDD must be within its correct operating range (3.0V to 28V) to guarantee the output sampling. The output state is valid
after the start-up time of 10s typical from the operating voltage reaching 3V.
8. Typical values are defined at TA = +25C, VDD = 12V. Maximum and minimum values over the operating temperature range is not tested in production but
guaranteed by design, process control and characterization.
9. Guaranteed by design, process control and characterization, Not tested in production.
10. The device will limit the output current IOUT to current limit of IOCL.
AH3373
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AH3373
Magnetic Characteristics (Note 11 &12) (TA = -40°C to +125°C , VDD = 3.0V to 28V, unless otherwise specified)
(1mT=10 Gauss)
Symbol
Parameter
Condition
Min
Typ
Max
Unit
BOPS (South pole to the part marking
side for SOT23 and SIP-3 (Ammo Pack),
SIP-3 (Bulk Pack) packages;
South pole to the non-part marking side
for SC59 package. See diagram below)
Operation Point
VDD = 12V, TA = +25C
-
55
-
Gauss
TA = -40C to +125C
38
55
72
BRPS (South pole to the part marking
side for SOT23 and SIP-3 (Ammo Pack),
SIP-3 (Bulk Pack) packages;
South pole to the non-part marking side
for SC59 package. See diagram below)
Release Point
VDD = 12V, TA = +25C
-
35
-
TA = -40C to +125C
20
35
50
BHY (|BOPX|-|BRPX|)
Hysteresis (Note 13)
VDD = 12V, TA = +25C
-
20
-
TA = -40C to +125C
14
20
26
Notes: 11. When power is initially turned on, VDD must be within its correct operating range (3.0V to 28V) to guarantee the output sampling. The output state is valid
after the start-up time of 10us typical from the operating voltage reaching 3V.
12. Typical values are defined at TA = +25C, VDD = 12V. Maximum and minimum values over the operating temperature range is not tested in production
but guaranteed by design, process control and characterization
13. Maximum and minimum hysteresis is guaranteed by design, process control and characterization.
BHY
VDD
BRPS BOPS0
Turn off Turn on
(Off-state)
(On-state)
VOUT_ON = VSAT
( Magnetic Flux Density B )
( Output Voltage )
Output
Part mark
N
S
SOT23
Part mark
S
SIP-3(Ammo Pack)
N
Part mark
N
S
SC59 SIP-3(Bulk Pack)
AH3373
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AH3373
Typical Operating Characteristics
Output Switch Operate and Release Points (Magnetic Thresholds) – BOPs and BRPs
Supply Current
AH3373
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AH3373
Typical Operating Characteristics (Cont.)
Supply Reverse Current
Output Switch On Voltage
Output Switch Leakage Current
AH3373
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AH3373
Typical Operating Characteristics (Cont.)
Output Current Limit
AH3373
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AH3373
Thermal Performance Characteristics
(1) Package type: SC59 and SOT23
TA (°C)
25
50
60
70
80
85
90
100
105
110
120
125
130
140
150
PD (mW)
230
184
166
147
129
120
110
92
83
74
55
46
37
18
0
(2) Package type: SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
TA (°C)
25
50
60
70
80
85
90
100
105
110
120
125
130
140
150
PD (mW)
550
440
396
362
308
286
264
220
198
176
132
110
88
44
0
0
100
200
300
025 50 75 100 125 150
Power Dissipation PD (mW)
Ambient Temperature TA(oC)
Power Dissipation Curve
-40
0
100
200
300
400
500
600
025 50 75 100 125 150
PD(mW)
TA(°C)
Power Dissipation Curve
-40
AH3373
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AH3373
Ordering Information
AH3373 - X - X
Packing
7 : Tape & Reel
A: Ammo Box (Note 14)
B: Bulk (Note 15)
Product Name Package
P : SIP-3(Ammo Pack)
P : SIP-3(Bulk Pack)
SA : SOT23
W : SC59
Part Number
Package
Code
Packaging
Bulk
7” Tape and Reel
Ammo Box
Quantity
Part Number
Suffix
Quantity
Part Number
Suffix
Quantity
Part Number
Suffix
AH3373-P-A
P
SIP-3(Ammo Pack)
NA
NA
NA
NA
4000/Box
-A
AH3373-P-B
P
SIP-3(Bulk Pack)
1000
-B
NA
NA
NA
NA
AH3373-SA-7
SA
SOT23
NA
NA
3000/Tape & Reel
-7
NA
NA
AH3373-W-7
W
SC59
NA
NA
3000/Tape & Reel
-7
NA
NA
Notes: 14. Ammo Box is for SIP-3 (Ammo Pack) Spread Lead.
15. Bulk is for SIP-3 (Bulk Pack) Straight Lead.
Marking Information
(1) Package Type: SC59 and SOT23
XX Y W X
( Top View )
XX : Identification code
W : Week : A to Z : 1 to 26 week;
X : Internal code
Y : Year 0 to 9
a to z : 27 to 52 week; z represents
52 and 53 week
Part Number
Package
Identification Code
AH3373
SC59
DT
AH3373
SOT23
MT
(2) Package Type: SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
3373
Part Number
( Top View )
Y WW X
X : Internal Code
Y : Year : 0~9
WW : Week : 01~52, "52" represents
52 and 53 week
Part Number
Package
Identification Code
AH3373
SIP-3 (Ammo Pack)
3373
AH3373
SIP-3 (Bulk Pack)
3373
AH3373
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AH3373
Package Outline Dimensions (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(1) Package Type: SC59
C
L
0.7/0.9
1.3/1.5
Hall Sensor
Min/Max
0.595/0.715
0.10/0.20
Die
PART
MARKING
SURFACE
Pin1
Sensor Location
SC59
Dim
Min
Max
Typ
A
0.35
0.50
0.38
B
1.50
1.70
1.60
C
2.70
3.00
2.80
D
-
-
0.95
G
-
-
1.90
H
2.90
3.10
3.00
J
0.013
0.10
0.05
K
1.00
1.30
1.10
L
0.35
0.55
0.40
M
0.10
0.20
0.15
N
0.70
0.80
0.75
0°
8°
-
All Dimensions in mm
A
M
JL
D
BC
H
K
G
N
AH3373
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AH3373
Package Outline Dimensions (Cont.) (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(2) Package Type: SOT23
0.17/0.37
0.5/0.7
1.4/1.5
Hall Sensor
PART
MARKING
SURFACE
Min/Max
Pin1
Die
Sensor Location
J
K1 K
L1
GAUGE PLANE
0.25
H
L
M
All 7°
A
CB
D
G
F
a
SOT23
Dim
Min
Max
Typ
A
0.37
0.51
0.40
B
1.20
1.40
1.30
C
2.30
2.50
2.40
D
0.89
1.03
0.915
F
0.45
0.60
0.535
G
1.78
2.05
1.83
H
2.80
3.00
2.90
J
0.013
0.10
0.05
K
0.890
1.00
0.975
K1
0.903
1.10
1.025
L
0.45
0.61
0.55
L1
0.25
0.55
0.40
M
0.085
0.150
0.110
a
0°
8°
--
All Dimensions in mm
AH3373
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AH3373
Package Outline Dimensions (Cont.) (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(3) Package Type: SIP-3 (Bulk Pack)
SIP-3 (Bulk Pack)
Dim
Min
Max
Typ
A
1.40
1.60
1.50
b
0.33
0.43
0.38
b2
0.40
0.508
0.46
c
0.35
0.41
0.38
D
3.90
4.30
4.10
E
2.80
3.20
3.00
e1
1.24
1.30
1.27
F
0.00
0.20
--
J
2.62 REF
L
14.00
15.00
14.50
L1
1.55
1.75
1.65
S
0.63
0.84
0.74
a1
--
--
5
a2
--
--
5
a3
--
--
45
a4
--
--
3
All Dimensions in mm
Die
PART
MARKING
SURFACE
0.63/0.84
0.27/0.48
Hall Sensor
1.90/2.10
1.05/1.25
123
PART
MARKING
SURFACE
Min/Max
Sensor Location
a2(2x)
a1(2x)
A
c
L
F
L1
b
e1
J
D
b2
E
a4(2x
a3(2x
S
AH3373
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AH3373
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(4) Package Type: SIP-3 (Ammo Pack)
SIP-3
(Ammo Pack)
Dim
Min
Max
Typ
A
1.40
1.60
1.50
b
0.33
0.43
0.38
b2a
0.40
0.52
0.46
c
0.35
0.41
0.38
D
3.90
4.30
4.10
E
2.80
3.20
3.00
e1
1.24
1.30
1.27
e2
2.40
2.90
2.65
F
0.00
0.20
--
J
2.62 REF
L
14.00
15.00
14.50
La
12.90
14.90
13.90
L1
1.55
1.75
1.65
L3
2.00
3.00
2.50
S
0.63
0.84
0.74
a1
--
--
5
a2
--
--
5
a3
--
--
45
a4
--
--
3
All Dimensions in mm
Die
PART
MARKING
SURFACE
0.63/0.84
0.27/0.48
Hall Sensor
1.90/2.10
1.05/1.25
123
PART
MARKING
SURFACE
Min/Max
Sensor Location
a4(2x
a3(2x
S
a2(2x)
a1(2x)
AJ
D
E
L1
F
b2a
L3
b
e2
e1
c
La
L
AH3373
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Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
(1) Package Type: SC59
(2) Package Type: SOT23
`
X
Y
Y1 C
X1
Dimensions
Value (in mm)
Z
3.4
X
0.8
Y
1.0
C
2.4
E
1.35
Dimensions
Value (in mm)
C
2.0
X
0.8
X1
1.35
Y
0.9
Y1
2.9
X E
Y
C
Z
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AH3373
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
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indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
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final and determinative format released by Diodes Incorporated.
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Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
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failure of the life support device or to affect its safety or effectiveness.
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