AH3775

AH3775
HIGH-VOLTAGE MEDIUM-SENSITIVITY HALL EFFECT LATCH
Description
Pin Assignments
The AH3775 is a high-voltage medium-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 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 AH3775
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
SC59 and SOT23
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
(Top View)
on (pulled low). The output is held latched until magnetic flux density
reverses and becomes lower than the release point (BRP).
3. OUTPUT
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 south
pole to the non-part marking side.
1. VDD
2. GND
SIP-3
Features
Applications
•
Bipolar Latch Operation (South Pole: On, North Pole: off)
•
Brushless DC Motor Commutation
•
3.0V to 28V Operating Voltage Range
•
Revolution Per Minute (RPM) Measurement
•
Medium Sensitivity: BOP and BRP of +70G and -70G Typical
•
Flow Meters
•
Single, Open-Drain Output with Overcurrent Limit
•
Angular and Linear Encoder and Position Sensors
•
Chopper Stabilized Design Provides:
•
Contactless Commutation, Speed Measurement and Angular
-
Superior Temperature Stability
Position Sensing/Indexing in Consumer Home Appliances, Office
-
Minimal Switch Point Drift
Equipments and Industrial Applications
-
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:
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.
AH3775
Document number: DS37900 Rev. 1 - 2
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AH3775
Typical Applications Circuit
3.0V to 28V
VDD
RL
OUTPUT
AH3775
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
AH3775
Document number: DS37900 Rev. 1 - 2
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AH3775
Absolute Maximum Ratings (Notes 5 & 6) (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
VDDR
VOUT_MAX
IOUT
IOUT_R
B
Reverse Output Current
Magnetic Flux Density
PD
Value
32
-32
32V
60
Unit
V
V
V
mA
-50
mA
Unlimited
550
230
-65 to +165
+150
6
SIP-3
SC59 and SOT23
Package Power Dissipation
Ts
TJ
ESD
Notes:
Characteristic
Supply Voltage (Note 6)
Reverse Supply Voltage
Output off Voltage (Note 6)
Continuous Output Current
Storage Temperature Range
Maximum Junction Temperature
Electrostatic Discharge Withstand Capability - Human Body Model
mW
mW
°C
°C
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 28V
V
Operating Temperature Range
Operating
-40 to +125
°C
Electrical Characteristics
Symbol
VOUT_ON
IOUT_OFF
IDD
IDD_R
tST
fc
td
tr
tf
IOCL
VZ
Notes:
Conditions
(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
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
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
Min
-
Typ
0.2
<0.1
2.7
-0.01
-0.01
10
800
Max
0.4
10
3
4
1
1.5
-
Unit
V
µA
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
B> BOP, (Note 10 )
IDD = 5mA
30
28
-
55
-
mA
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
AH3775
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AH3775
Magnetic Characteristics (Notes 11 &12) (TA = -40°C to +125°C, VDD = 3.0V to 28V, unless otherwise specified)
Symbol
Parameter
Conditions
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
Min
Typ
VDD = 12V, TA = +25°C
-
70
-
TA = -40°C to +125°C
50
70
90
VDD = 12V, TA = +25°C
-
-70
-
TA = -40°C to +125°C
-90
-70
-50
VDD = 12V, TA = +25°C
-
140
-
TA = -40°C to +125°C
100
140
180
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
( Output Voltage )
(off-state)
Bhy
Turn off
Turn on
(on-state)
VOUT_ON = VOUT(SAT)
Brp
0
Bop
( Magnetic Flux Density B )
S
S
S
Part mark
Part mark
Part mark
AH3775
Document number: DS37900 Rev. 1 - 2
N
N
N
(SC59)
(SOT23)
(SIP-3)
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AH3775
Typical Operating Characteristics
Magnetic Operating Switch Points – BOP and BRP
180.0
160.0
140.0
120.0
100.0
80.0
60.0
40.0
20.0
0.0
-20.0
-40.0
-60.0
-80.0
-100.0
-120.0
-140.0
-160.0
-180.0
TA = +25oC
Hyst
VDD = 3V
Hyst
Bop
Gauss (G)
Gauss (G)
Bop
180.0
160.0
140.0
120.0
100.0
80.0
60.0
40.0
20.0
0.0
-20.0
-40.0
-60.0
-80.0
-100.0
-120.0
-140.0
-160.0
-180.0
Brp
2
180.0
160.0
140.0
120.0
100.0
80.0
60.0
40.0
20.0
0.0
-20.0
-40.0
-60.0
-80.0
-100.0
-120.0
-140.0
-160.0
-180.0
4
6
8
10
12
14
16
18
20
22
24
26
28
Brp
-50
30
-25
0
25
50
75
100
125
150
o
Supply Voltage (V)
Temperature ( C)
Switch Points Bop and Brp vs Supply Voltage
Switch Points Bop and Brp vs Temperature
VDD = 12V
180.0
160.0
140.0
120.0
100.0
80.0
60.0
40.0
20.0
0.0
-20.0
-40.0
-60.0
-80.0
-100.0
-120.0
-140.0
-160.0
-180.0
Hyst
Hyst
Bop
Gauss (G)
Gauss (G)
Bop
VDD = 28V
Brp
-50
-25
0
25
50
75
100
125
Brp
-50
150
-25
0
25
50
75
100
125
150
o
o
Temperature ( C)
Temperature ( C)
Switch Points Bop and Brp vs Temperature
Switch Points Bop and Brp vs Temperature
Supply Current
4.0
TA = +25 C
Supply Current IDD (mA)
Supply Current IDD (mA)
5.0
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
0
10 20 30 40 50 60 70 80 90 100 110 120 130
Supply Voltage (V)
Temperature (oC)
Supply Current vs Supply Voltage
Supply Current vs Temperature
AH3775
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AH3775
Typical Operating Characteristics
0.4
Output On Voltage VOUT_ON (V)
Output On Voltage VOUT_ON (V)
Output Switch On Voltage
TA = +25 C
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
-50 -40 -30 -20 -10
30
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
3.0
2.8
750
TA = +25 C
Supply Reverse Current (mA)
Supply Reverse Current (mA)
Supply Reverse Current
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
Temperature ( C)
Supply Reverse Current vs Temperature
Supply Reverse Current vs Supply Voltage
Document number: DS37900 Rev. 1 - 2
0
o
Supply Voltage (V)
AH3775
-25
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AH3775
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
Power Dissipation Curve
Power Dissipation PD (mW)
300
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)
AH3775
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AH3775
Ordering Information
AH3775 - 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
AH3775-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
AH3775-P-B
P
SIP-3
1,000
-B
NA
NA
NA
AH3775-SA-7
SA
SOT23
NA
NA
3,000/Tape & Reel
-7
NA
NA
AH3775-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: SOT23 and SC59
( 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
AH3775
AH3775
SC59
SOT23
YZ
ZE
Package Type: SIP-3
( Top View )
Part Number
3775
Y WW X
AH3775
Document number: DS37900 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
AH3775
SIP-3
3775
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AH3775
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(1)
Package Type: SC59
A
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
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
AH3775
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AH3775
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(2)
Package Type: SOT23
All 7°
H
K1
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
GAUGE PLANE
0.25
a
M
A
L
C
L1
B
D
F
G
0.17/0.37
Min/Max
0.5/0.7
PART
MARKING
SURFACE
Die
Hall Sensor
Pin1
1.4/1.5
Sensor Location
AH3775
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AH3775
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(3)
Package Type: SIP-3 Bulk
Sensor location to be added
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
a3
A
E
a4
G H
F
Min/Max
0.63/0.84
0.27/0.48
1.90/2.10
PART
MARKING
SURFACE
Hall Sensor
1
2
Die
1.05/1.25
PART
MARKING
SURFACE
3
Sensor Location
AH3775
Document number: DS37900 Rev. 1 - 2
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AH3775
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.
(4)
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
Hall Sensor
1
2
Die
1.05/1.25
PART
MARKING
SURFACE
PART
MARKING
SURFACE
3
Sensor Location
AH3775
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AH3775
Suggested Pad Layout
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
C
2.0
E
1.35
AH3775
Document number: DS37900 Rev. 1 - 2
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AH3775
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
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
AH3775
Document number: DS37900 Rev. 1 - 2
14 of 14
www.diodes.com
September 2015
© Diodes Incorporated
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