AH3777

AH3777
HIGH-VOLTGAE LOW-SENSITIVITY HALL EFFECT LATCH
Description
Pin Assignments
The AH3777 is a high voltage, low sensitivity Hall effect latch IC
designed for commutation of brushless DC motors, flow meters,
linear encoders and position sensors in industrial and consumer
home appliance 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 AH3777
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 Operation (South Pole: On, North Pole: off)
3.0V to 28V Operating Voltage Range
Low Sensitivity: BOP and BRP of +140G and -140G 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 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.
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
Typical Applications Circuit
3.0V to 28V
VDD
RL
OUTPUT
AH3777
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
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
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
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 28
V
Operating Temperature Range
Operating
-40 to +125
°C
Electrical Characteristics
Symbol
VOUT_ON
IOUT_OFF
IDD
IDD_R
Reverse Battery Current
tST
Device Start-Up Time
fc
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
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
td
Conditions
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)
Min
-
Typ
0.2
<0.1
3
-0.01
-0.01
10
Max
0.4
10
3.5
4
1
1.5
Unit
V
µA
mA
mA
mA
mA
µs
VDD = 3V to 28V
-
800
-
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
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.
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
Magnetic Characteristics (Notes 11 &12) (TA = -40°C to +125°C, VDD = 3.0V to 28V, unless otherwise specified)
Symbol
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
-
140
-
TA = -40°C to +125°C
110
140
170
VDD = 12V, TA = +25°C
-
-140
-
TA = -40°C to +125°C
-170
-140
-110
VDD = 12V, TA = +25°C
-
280
-
TA = -40°C to +125°C
220
280
340
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
( Output Voltage )
(off-state)
Bhy
Turn off
Turn on
(on-state)
VOUT_ON = VSAT
Brp
0
Bop
( Magnetic Flux Density B )
S
S
Part mark
Part mark
AH3777
Document number: DS37902 Rev. 1 - 2
N
N
(SOT23)
(SIP-3)
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AH3777
Typical Operating Characteristics
Magnetic Operating Switch Points – Bop and Brp
350.0
300.0
250.0
200.0
150.0
100.0
50.0
0.0
-50.0
-100.0
-150.0
-200.0
-250.0
-300.0
-350.0
TA = +25oC
Hyst
VDD = 3V
Hyst
Bop
Gauss (G)
Gauss (G)
Bop
350.0
300.0
250.0
200.0
150.0
100.0
50.0
0.0
-50.0
-100.0
-150.0
-200.0
-250.0
-300.0
-350.0
Brp
2
350.0
300.0
250.0
200.0
150.0
100.0
50.0
0.0
-50.0
-100.0
-150.0
-200.0
-250.0
-300.0
-350.0
4
6
8
10
12
14
16
18
20
22
24
26
28
Brp
-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
VDD = 12V
350.0
300.0
250.0
200.0
150.0
100.0
50.0
0.0
-50.0
-100.0
-150.0
-200.0
-250.0
-300.0
-350.0
Hyst
Hyst
Bop
Gauss (G)
Gauss (G)
Bop
VDD = 28V
150
Brp
-50
-25
0
25
50
75
100
125
Brp
-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
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
Supply Current vs Temperature
Supply Current vs Supply Voltage
Document number: DS37902 Rev. 1 - 2
10 20 30 40 50 60 70 80 90 100 110 120 130
Temperature (oC)
Supply Voltage (V)
AH3777
0
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AH3777
Typical Operating Characteristics
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
0.4
28V
0.3
0.2
3V
12V
0.1
0.0
0.0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
-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
Supply Reverse Current vs Temperature
Supply Reverse Current vs Supply Voltage
Document number: DS37902 Rev. 1 - 2
0
Temperature (oC)
Supply Voltage (V)
AH3777
-25
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AH3777
Thermal Performance Characteristics
(1)
Package type: 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)
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
Ordering Information
AH3777 - XXX - X
Packing
Package
7 : Tape & Reel
A: Ammo Box (Note 14)
B: Bulk (Note 15)
P : SIP-3
SA : SOT23
Part Number
Package
Code
Packaging
AH3777-P-A
P
SIP-3
NA
Quantity
7” Tape and Reel
Part Number
Quantity
Suffix
Bulk
Part Number
Suffix
NA
Ammo Box
Quantity Part Number
Suffix
NA
NA
4,000/Box
-A
AH3777-P-B
P
SIP-3
1,000
-B
NA
NA
NA
NA
AH3777-SA-7
SA
SOT23
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
( Top View )
XX Y W X
Part Number
AH3777
(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
SOT23
Identification Code
ZG
Package Type: SIP-3
( Top View )
Part Number
3777
Y WW X
AH3777
Document number: DS37902 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
AH3777
SIP-3
3777
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AH3777
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: 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
0.5/0.7
PART
MARKING
SURFACE
Die
Hall Sensor
Pin1
1.4/1.5
Sensor Location
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
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: 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
a3
A
E
a4
G H
F
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
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
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 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
AH3777
Document number: DS37902 Rev. 1 - 2
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AH3777
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
(1)
Package Type: SOT23
Y
Z
Dimensions Value (in mm)
Z
2.9
X
0.8
Y
0.9
C
2.0
E
1.35
C
X
AH3777
Document number: DS37902 Rev. 1 - 2
E
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AH3777
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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
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
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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.
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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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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
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AH3777
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