AH3782

AH3782
HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH
WITH INTERNAL PULL-UP RESISTOR
PRELIMINARY - CONFIDENTIAL
Description
Pin Assignments
The AH3782 is a high-voltage, high-sensitivity Hall Effect latch IC
with internal pull-up resistor 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 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 AH3782 provides a reliable solution over the whole
operating range. For robustness and protection, the device has a
Zener clamp on the supply. The output has an overcurrent limit and a
Zener clamp.
(Top View)
3 OUTPUT
GND 2
1 VDD
SC59 and SOT23
The internally pulled-up 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 part
marking surface is larger than the operate point (BOP) the output is
(Top View)
switched on (pulled low). The output is held latched until magnetic flux
density reverses and becomes lower than the release point (BRP).
3. OUTPUT
2. GND
The magnetic operating and release polarity is opposite for SOT23
and SC59 packages. SOT23 and SIP-3 packages will require South
pole to the part marking side to operate while SC59 will require North
pole to the part marking side.
1. VDD
SIP-3
Features
Applications
•
•
•
Bipolar Latch Operation (South Pole: On, North Pole: off)
3.0V to 28V Operating Voltage Range
High Sensitivity: BOP and BRP of +40G and -40G Typical
•
•
•
Internally Pull-up Resistor on the Output Pin
Output Overcurrent Limit
Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
Good RF Noise Immunity
Zener Clamp on Supply and Output Pins
-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
Contact-less Commutation, Speed Measurement and Angular
Position Sensing/Indexing in Consumer Home Appliances, Office
Equipments 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.
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
PRELIMINARY - CONFIDENTIAL
Typical Applications Circuit
3.0V to 28V
VDD
OUTPUT
AH3782
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: SC59, 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
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
Absolute Maximum Ratings (Notes 5 & 6) (@TA = +25°C, unless otherwise specified.)
PRELIMINARY - CONFIDENTIAL
Symbol
Characteristic
VDD
Supply Voltage (Note 6)
VDDR
Value
Unit
32
V
V
Reverse Supply Voltage
-0.3
VOUT_MAX
Output Off Voltage (Note 6)
32V
V
IOUT
Continuous Output Current
60
mA
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
SC59 and SOT23
Electrostatic Discharge Withstand Capability - Human Body Model
mW
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
Parameter
Unit
Operating
3.0 to 28
V
Operating Temperature Range
Operating
-40 to +125
°C
(Notes 7 & 8) (@TA = -40°C to +125°C, VDD = 3V to 28V, unless otherwise specified.)
Parameter
Output On Voltage
Conditions
IOUT = 20mA, B > BOP
Min
-
Typ
0.2
Output Leakage Current
VOUT = 28V, B < BRP, Output off
-
<0.1
15
µA
IDD
Supply Current
RPU
tST
fc
Internal Pull-Up Resistance
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
Output open, VDD = 12V , TA = 25°C
Output open, TA = -40°C to +125°C
TA = -40°C to 125°C,
VDD >= 3V, B > BOP (Note 7)
VDD = 3V to 28V
10
-
3.8
3.8
14
10
800
4.9
5.8
18
-
mA
mA
kΩ
µs
kHz
(Note 9)
-
3.75
-
µs
RL =1kΩ, CL = 20pF
-
0.2
1
µs
RL =1kΩ, CL = 20pF
-
0.1
1
µs
B > BOP, (Note 10 )
IDD = 5mA
30
28
-
55
-
mA
V
td
tr
tf
IOCL
VZ
Notes:
Rating
Supply Voltage
Electrical Characteristics
Symbol
VOUT_ON
IOUT_OFF
Conditions
Max
0.4
Unit
V
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 10us 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
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
Magnetic Characteristics (Notes 11 &12) (TA = -40°C to +125°C, VDD = 3.0V to 28V, unless otherwise specified)
Parameter
BOP (South pole to part marking side for
SOT23 and SIP-3 packages;
South pole to the non-part marking side
for SC59 package. See diagram below)
Operation Point
BRP (North pole to part marking side for
SOT23 and SIP-3 packages;
North pole to the non-part marking side
for SC59 package. See diagram below)
Release Point
BHY (|BOPX|-|BRPX|)
Hysteresis (Note 13)
Notes:
(1mT=10 Gauss)
Max
Unit
-
Conditions
VDD = 12V, TA = +25°C
Min
-
Typ
40
TA = -40°C to +125°C
20
40
60
VDD = 12V, TA = +25°C
-
-40
-
TA = -40°C to +125°C
-60
-40
-20
VDD = 12V, TA = +25°C
TA = -40°C to +125°C
-40
80
80
120
Gauss
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 10µs 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 = VSAT
Brp
0
Bop
( Magnetic Flux Density B )
S
S
S
Part mark
Part mark
Part mark
AH3782
Document number: DS38083 Rev. 1 - 2
N
N
N
(SC59)
(SOT23)
(SIP-3)
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AH3782
Typical Operating Characteristics
100
TA = +25oC
80
100
Hyst
60
Bop
20
0
-20
-40
Bop
40
Gauss (G)
Gauss (G)
40
Brp
20
0
-20
-40
Brp
-60
-60
-80
-80
-100
-100
2
4
100
6
8
10
12
14
16
18
20
22
24
26
28
-50
30
-25
0
25
50
75
100
125
Supply Voltage (V)
Temperature (oC)
Switch Points Bop and Brp vs Supply Voltage
Switch Points Bop and Brp vs Temperature
100
Hyst
VDD = 12V
80
150
Hyst
VDD = 28V
80
60
60
Bop
20
0
-20
-40
Bop
40
Gauss (G)
40
Gauss (G)
Hyst
VDD = 3V
80
60
Brp
-60
20
0
-20
-40
Brp
-60
-80
-80
-100
-100
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
o
50
75
100
125
Temperature ( C)
Temperature ( C)
Switch Points Bop and Brp vs Temperature
Switch Points Bop and Brp vs Temperature
150
o
Supply Current
7.0
7.0
TA = +25 C
Supply Current IDD (mA)
Supply Current IDD (mA)
PRELIMINARY - CONFIDENTIAL
Magnetic Operating Switch Points – BOP and BRP
6.0
5.0
4.0
3.0
2.0
1.0
28V
6.0
5.0
4.0
3.0
12V
2.0
3V
1.0
0.0
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: DS38083 Rev. 1 - 2
10 20 30 40 50 60 70 80 90 100 110 120 130
Temperature (oC)
Supply Voltage (V)
AH3782
0
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AH3782
0.4
TA = +25 C
Output On Voltage VOUT_ON (V)
Output On Voltage VOUT_ON (V)
Output Switch On Voltage
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
3V
12V
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 Supply Voltage
Output On Voltage vs Temperature
20.0
TA = +25 C
16.0
12.0
8.0
4.0
0.0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
Internal Pull-up Resistor RPU (kW)
Internal Pull-up Resistor RPU (kW )
Output Pull-Up Resistor (Internal)
20.0
28V
16.0
12.0
3V
12V
8.0
4.0
0.0
-50 -40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120 130
Temperature (oC)
Supply Voltage (V)
Internal Output Pull-up Resistor vs Temperature
Internal Output Pull-up Resistor vs Supply Voltage
70
Output Current Limit IOCL (mA)
Output Current Limit
Output Current Limit IOCL (mA)
PRELIMINARY - CONFIDENTIAL
Typical Operating Characteristics
TA = +25 C
60
50
40
30
20
10
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
60
28V
50
40
3V
30
20
10
0
-50 -40 -30 -20 -10
10 20 30 40 50 60 70 80 90 100 110 120 130
Output Current Limit vs Temperature
Output Current Limit vs Supply Voltage
Document number: DS38083 Rev. 1 - 2
0
Temperature (oC)
Supply Voltage (V)
AH3782
12V
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AH3782
Thermal Performance Characteristics
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
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)
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
Ordering Information
PRELIMINARY - CONFIDENTIAL
AH3782 - XXX - X
Packing
Package
7 : Tape & Reel
A: Ammo Box (Note 14)
B: Bulk (Note 15)
P : SIP-3
SA : SOT23
W : SC59
Part Number
Package
Code
Packaging
AH3782-P-A
P
SIP-3
Quantity
7” Tape and Reel
Part Number
Quantity
Suffix
Bulk
Part Number
Suffix
NA
NA
NA
Ammo Box
Quantity Part Number
Suffix
NA
4,000/Box
-A
NA
AH3782-P-B
P
SIP-3
1,000
-B
NA
NA
NA
AH3782-SA-7
SA
SOT23
NA
NA
3,000/Tape & Reel
-7
NA
NA
AH3782-W-7
W
SC59
NA
NA
3,000/Tape & Reel
-7
NA
NA
Notes:
14. Ammo Box is for SIP-3 Spread Lead.
15. Bulk is for SIP-3 Straight Lead.
Marking Information
(1)
Package Type: SC59 and SOT23
( Top View )
XX Y W X
Part Number
AH3782
AH3782
(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
Package
SC59
SOT23
Identification Code
YY
WY
Package Type: SIP-3
( Top View )
Part Number
3782
Y WW X
AH3782
Document number: DS38083 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
AH3782
SIP-3
3782
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AH3782
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
Package Type: SC59
PRELIMINARY - CONFIDENTIAL
(1)
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
B C
G
H
K
J
M
N
L
D
0.10/0.20
CL
0.7/0.9
PART
MARKING
SURFACE
0.595/0.715
Min/Max
Die
Hall Sensor
Pin1
1.3/1.5
Sensor Location
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
Package Outline Dimensions (All dimensions in mm.)
(2)
Package Type: SOT23
All 7°
H
K1
GAUGE PLANE
0.25
J
K
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
a
M
A
L
C
L1
B
D
F
G
0.17/0.37
Min/Max
PART
MARKING
SURFACE
0.5/0.7
PRELIMINARY - CONFIDENTIAL
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
Die
Hall Sensor
Pin1
1.4/1.5
Sensor Location
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
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
(3)
PART
MARKING
SURFACE
3
Sensor Location
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
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
(4)
PART
MARKING
SURFACE
3
Sensor Location
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
Suggested Pad Layout
PRELIMINARY - CONFIDENTIAL
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
(1)
Package Type: SC59
Y
Z
X
(2)
Dimensions Value (in mm)
Z
3.4
X
0.8
Y
1.0
C
2.4
E
1.35
C
E
Package Type: SOT23
Dimensions Value (in mm)
Z
2.9
X
0.8
Y
0.9
2.0
C
1.35
E
AH3782
Document number: DS38083 Rev. 1 - 2
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AH3782
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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without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
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This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
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.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2015, Diodes Incorporated
www.diodes.com
AH3782
Document number: DS38083 Rev. 1 - 2
14 of 14
www.diodes.com
September 2015
© Diodes Incorporated
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