AH3772

AH3772
HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH
PRELIMINARY - CONFIDENTIAL
Description
Pin Assignments
The AH3772 is a high-voltage, high-sensitivity Hall Effect latch IC
designed for commutation of brushless DC motors, flow meters,
linear encoders and position sensors in industrial and consumer
home appliances and personal care applications. To support a wide
range of demanding applications, the design is 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 AH3772
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 overcurrent limit
and a Zener clamp.
(Top View)
3 OUTPUT
GND 2
1 VDD
SOT23
(Top View)
The single open drain output can be switched on with South pole of
sufficient strength and switched off with North 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
3. OUTPUT
2. GND
1. VDD
on (pulled low). The output is held latched until magnetic flux density
reverses and becomes lower than the release point (BRP).
SIP-3
Features
Applications
•
Bipolar Latch (South Pole: On, North Pole: off)
•
3.0V to 28V Operating Voltage Range
•
High Sensitivity: BOP and BRP of +25G and -25G Typical
•
Single, Open-Drain Output with Overcurrent Limit
•
Chopper Stabilized Design Provides
•
•
•
•
•
-
Superior Temperature Stability
-
Minimal Switch Point Drift
-
Enhanced Immunity to Stress
•
Good RF Noise Immunity
•
Reverse Blocking Diode and Zener Clamp on Supply
•
-40C to +125°C Operating Temperature
•
ESD (HBM): 6kV
•
Industry Standard SC59, SOT23 and SIP-3 Packages
•
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
Brushless DC Motor Commutation
Revolution Per Minute (RPM) Measurement
Flow Meters
Angular and Linear Encoder and Position Sensors
Contactless Commutation, Speed Measurement and Angular
Position Sensing/Indexing in Consumer Home Appliances, Office
Equipment and Industrial Applications
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html 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.
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
Typical Applications Circuit
PRELIMINARY - CONFIDENTIAL
3.0V to 28V
VDD
RL
OUTPUT
AH3772
CIN
GND
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: SOT23 and SIP-3
Pin Number
Pin Name
1
VDD
2
3
GND
OUTPUT
Function
Power Supply Input
Ground
Output Pin
Functional Block Diagram
VDD
Power
switch
To All Subcircuits
Amp
Low-Pass Filter
Sample and
Hold
Dynamic Offset
Cancellation
Amp
OUTPUT
Control
Current
Limit
GND
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
Absolute Maximum Ratings (Notes 5 & 6) (@TA = +25°C, unless otherwise specified.)
PRELIMINARY - CONFIDENTIAL
Symbol
Value
Unit
VDD
Supply Voltage (Note 6)
32
V
VDDR
Reverse Supply Voltage
-32
V
VOUT_MAX
Output Off Voltage (Note 6)
32V
V
IOUT
Continuous Output Current
60
mA
Reverse Output Current
-50
mA
IOUT_R
Characteristic
B
Magnetic Flux Density
PD
Package Power Dissipation
Ts
Storage Temperature Range
TJ
Maximum Junction Temperature
ESD
Notes:
Unlimited
550
230
-65 to +165
SIP-3
SOT23
Electrostatic Discharge Withstand Capability - Human Body Model
mW
°C
+150
°C
6
kV
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
VDD
TA
Rating
Unit
Supply Voltage
Parameter
Operating
3.0 to 28
V
Operating Temperature Range
Operating
-40 to +125
°C
Electrical Characteristics
Symbol
mW
IOUT_OFF
IDD_R
tST
fc
td
tr
tf
IOCL
VZ
Notes:
(Notes 7 & 8) (@TA = -40°C to +125°C, VDD = 3V to 28V, unless otherwise specified.)
Parameter
Output On Voltage
Output Leakage Current
Supply Current
IDD
Conditions
Reverse Battery Current
Device Start-Up Time
Chopping Frequency
The time delay from magnetic
threshold reached to the start of the
output rise or fall
Output Rising Time
(external pull-up resistor RL and load
capacitance dependent)
Output Falling Time
(Internal switch resistance and load
capacitance dependent)
Output Current Limit
Zener Clamp Voltage
Conditions
Min
-
Typ
0.2
<0.1
Max
0.4
10
Unit
V
µA
-
3
-0.01
-0.01
10
800
4
1
1.5
-
mA
mA
mA
mA
µs
kHz
(Note 9)
-
3.75
-
µs
RL =1kΩ, CL = 20pF
-
0.2
1
µs
RL =1kΩ, CL = 20pF
-
0.1
1
µs
30
28
-
55
-
mA
V
IOUT = 20mA, B > BOP
VOUT = 28V, B < BRP, Output off
Output open, TA = +25C
Output open, TA = -40°C to +125°C
VDD = -18V, TA = -40°C to +125°C
VDD = -28V, TA = -40°C to +125°C
VDD >= 3V, B > BOP (Note 7)
VDD = 3V to 28V
B>BOP, (Note 10 )
IDD = 5mA
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 10µs typical from the operating voltage reaching 3V.
8. Typical values are defined at TA = +25C, 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.
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
Magnetic Characteristics (Notes 11 &12) (TA = -40°C to +125°C, VDD = 3.0V to 28V, unless otherwise specified)
BOP (South pole to part marking side)
BRP (North pole to part marking side)
BHY (|BOPX|-|BRPX|)
Notes:
Parameter
Conditions
(1mT=10 Gauss)
Max
Unit
Min
Typ
VDD = 12V, TA = +25°C
-
25
-
TA = -40°C to +125°C
10
25
40
VDD = 12V, TA = +25°C
-
-25
-
TA = -40°C to +125°C
-40
-25
-10
VDD = 12V, TA = +25°C
-
50
-
TA = -40°C to +125°C
20
50
80
Operation Point
Gauss
Release Point
Hysteresis (Note 13)
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 = +25C, 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.
Output
VDD
(off-state)
( Output Voltage )
PRELIMINARY - CONFIDENTIAL
Symbol
Bhy
Turn off
Turn on
(on-state)
VOUT_ON = VOUT(SAT)
Brp
0
Bop
( Magnetic Flux Density B )
S
S
Part mark
Part mark
AH3772
Document number: DS38106 Rev. 1 - 2
N
N
(SOT23)
(SIP-3)
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AH3772
Typical Operating Characteristics
60.0
60.0
TA = +25oC
50.0
Hyst
Hyst
40.0
30.0
30.0
Bop
20.0
Gauss (G)
Gauss (G)
VDD = 3V
50.0
40.0
10.0
0.0
-10.0
-20.0
Brp
Bop
20.0
10.0
0.0
-10.0
-20.0
Brp
-30.0
-30.0
-40.0
-50.0
-60.0
-40.0
-50.0
-60.0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
-50
30
-25
0
25
100
125
150
Switch Points Bop and Brp vs Temperature
VDD = 12V
60.0
Hyst
VDD = 28V
50.0
Hyst
40.0
40.0
30.0
Bop
20.0
Gauss (G)
Gauss (G)
75
Temperature ( C)
Switch Points Bop and Brp vs Supply Voltage
60.0
50
o
Supply Voltage (V)
0.0
-20.0
Brp
Bop
20.0
10.0
0.0
-10.0
-20.0
Brp
-30.0
-40.0
-40.0
-50.0
-60.0
-60.0
-50
-25
0
25
50
75
100
125
-50
150
-25
0
25
50
75
100
125
Temperature (oC)
Temperature (oC)
Switch Points Bop and Brp vs Temperature
Switch Points Bop and Brp vs Temperature
150
Supply Current
4.0
5.0
TA = +25 C
Supply Current IDD (mA)
Supply Current IDD (mA)
PRELIMINARY - CONFIDENTIAL
Magnetic Operating Switch Points – BOP and BRP
4.0
3.0
2.0
1.0
3.8
3.5
28V
3.3
3.0
2.8
3V
2.5
12V
2.3
2.0
0.0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
-50 -40 -30 -20 -10
Supply Current vs Temperature
Supply Current vs Supply Voltage
Document number: DS38106 Rev. 1 - 2
10 20 30 40 50 60 70 80 90 100 110 120 130
Temperature (oC)
Supply Voltage (V)
AH3772
0
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AH3772
Typical Operating Characteristics (continued)
TA = +25 C
Output On Voltage VOUT_ON (V)
Output On Voltage VOUT_ON (V)
0.4
0.3
0.2
0.1
0.0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
0.4
28V
0.3
0.2
12V
3V
0.1
0.0
30
-50 -40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130
Temperature (oC)
Supply Voltage (V)
Output On Voltage vs Temperature
Output On Voltage vs Supply Voltage
30.0
Output Leakage Current (nA)
Output Leakage Current (nA)
Output Switch Leakage Current
TA = +25 C
25.0
20.0
15.0
10.0
5.0
300
275
250
225
200
175
28V
150
125
100
12V
75
3V
50
25
0
0.0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
-50
30
-25
0
25
50
75
100
125
150
Temperature (oC)
Supply Voltage (V)
Output Leakage Current vs Temperature
Output Leakage Current vs Supply Voltage
Supply Reverse Current
3.0
2.8
750
TA = +25 C
Supply Reverse Current (mA)
Supply Reverse Current (mA)
PRELIMINARY - CONFIDENTIAL
Output Switch On Voltage
2.5
2.3
2.0
1.8
1.5
1.3
1.0
0.8
0.5
0.3
0.0
-30
-28
-26
-24
-22
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
625
-28V
500
-24V
375
250
-18V
125
0
-50
25
50
75
100
125
150
Supply Reverse Current vs Temperature
Supply Reverse Current vs Supply Voltage
Document number: DS38106 Rev. 1 - 2
0
Temperature (oC)
Supply Voltage (V)
AH3772
-25
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AH3772
Thermal Performance Characteristics
Package types: 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
Power Dissipation Curve
300
Power Dissipation PD (mW)
PRELIMINARY - CONFIDENTIAL
(1)
200
100
0
-40
0
25
50
75
100
125
150
Ambient Temperature TA (oC)
(2)
Package type: SIP-3
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
PD (mW)
Power Dissipation Curve
600
500
400
300
200
100
0
-40
0
25
50
75
100
125
150
TA (°C)
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
PRELIMINARY - CONFIDENTIAL
Ordering Information
AH3772 - XXX - X
Packing
Package
7 : Tape & Reel
A: Ammo Box (Note 14)
B: Bulk (Note 15)
P : SIP-3
SA : SOT23
7” Tape and Reel
Part Number
Quantity
Suffix
Bulk
Part Number
Suffix
Ammo Box
Quantity Part Number
Suffix
Part Number
Package
Code
Packaging
AH3772-P-A
P
SIP-3
NA
NA
NA
NA
4,000/Box
-A
AH3772-P-B
P
SIP-3
1,000
-B
NA
NA
NA
NA
AH3772-SA-7
SA
SOT23
NA
NA
3,000/Tape & Reel
-7
NA
NA
Notes:
Quantity
14. Ammo Box is for SIP-3 Spread Lead.
15. Bulk is for SIP-3 Straight Lead.
Marking Information
(1)
Package Type: SOT23
( Top View )
XX Y W X
(2)
XX : Identification code
Y : Year 0 to 9
W : Week : A to Z : 1 to 26 week;
a to z : 27 to 52 week; z represents
52 and 53 week
X : Internal code
Part Number
Package
Identification Code
AH3772
SOT23
WV
Package Type: SIP-3
( Top View )
Part Number
3772
Y WW X
AH3772
Document number: DS38106 Rev. 1 - 2
Y : Year : 0~9
WW : Week : 01~52, "52" represents
52 and 53 week
X : Internal Code
Part Number
Package
Identification Code
AH3772
SIP-3
3772
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AH3772
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
Package Type: SOT23
All 7°
H
K1
GAUGE PLANE
0.25
J
K
a
M
A
L
C
L1
B
D
G
F
0.17/0.37
Min/Max
PART
MARKING
SURFACE
Die
Hall Sensor
Pin1
Document number: DS38106 Rev. 1 - 2
D
0.89 1.03
F
0.45 0.60
Typ
0.40
1.30
2.40
0.91
5
0.53
5
1.83
2.90
1.78 2.05
2.80 3.00
0.01
0.10 0.05
J
3
0.89
0.97
1.00
K
0
5
0.90
1.02
1.10
K1
3
5
L 0.45 0.61 0.55
L1 0.25 0.55 0.40
0.08 0.15 0.11
M
5
0
0
8°
a
All Dimensions in
mm
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
8°
All Dimensions in mm
1.4/1.5
Sensor Location
AH3772
SOT23
Dim Min Max
A 0.37 0.51
B 1.20 1.40
C 2.30 2.50
G
H
0.5/0.7
PRELIMINARY - CONFIDENTIAL
(1)
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AH3772
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
Package Type: SIP-3 Bulk
SIP-3 (Bulk)
Dim
Min
Max
A
3.9
4.3
a1
5° Typ
a2
5°Typ
a3
45° Typ
a4
3°Typ
B
2.8
3.2
C
1.40
1.60
D
0.33
0.432
E
0.40
0.508
F
0
0.2
G
1.24
1.30
H
2.51
2.57
J
0.35
0.43
L
14.0
15.0
N
0.63
0.84
P
1.55
All Dimensions in mm
L
a1
J
a2
B
P
N
D
C
A
a3
E
a4
G H
F
Min/Max
0.63/0.84
0.27/0.48
1.90/2.10
1.05/1.25
PART
MARKING
SURFACE
Hall Sensor
1
2
Die
PRELIMINARY - CONFIDENTIAL
(2)
PART
MARKING
SURFACE
3
Sensor Location
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
Package Type: SIP-3 Ammo Pack
N
D
EF
SIP-3 (Ammo Pack)
Dim
Min
Max
A
3.9
4.3
a1
45° Typ
a2
3° Typ
B
2.8
3.2
C
1.40
1.60
D
0.35
0.41
E
0.43
0.48
F
0
0.2
G
2.4
2.9
N
0.63
0.84
P
1.55
All Dimensions in mm
C
A
G
a1
a2
B
P
Min/Max
0.63/0.84
0.27/0.48
1.90/2.10
1.05/1.25
PART
MARKING
SURFACE
Hall Sensor
1
2
Die
PRELIMINARY - CONFIDENTIAL
(3)
PART
MARKING
SURFACE
3
Sensor Location
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
Package Type: SOT23
PRELIMINARY - CONFIDENTIAL
(1)
Dimensions Value (in mm)
Z
2.9
X
0.8
Y
0.9
C
2.0
E
1.35
AH3772
Document number: DS38106 Rev. 1 - 2
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AH3772
PRELIMINARY - CONFIDENTIAL
IMPORTANT NOTICE
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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).
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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.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
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AH3772
Document number: DS38106 Rev. 1 - 2
13 of 13
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September 2015
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