AH1751

AH1751
HALL EFFECT LATCH
General Description
Features
•
•
•
•
•
•
•
•
Bipolar Hall Effect Latch Sensor
3.5V to 20V DC Operation Voltage
Open Collector Pre-Driver
50mA Output Sink Current
Chip Power Reverse-Connection Protection
o
o
Operating Temperature: -40 C~125 C
SIP3, SC59 and SC59R (Commonly known as SOT23
in Asia): Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
AH1751 is a single-digital-output Hall-effect sensor for high
temperature operation. The device includes an on-chip Hall
voltage generator for magnetic sensing, an amplifier to amplify
Hall voltage, and a comparator to provide switching hysteresis for
noise rejection, and an open-collector output pre-driver.
An internal band-gap regulator is used to provide temperature
compensated supply voltage for internal circuits and allows
a wide operating supply range.
While the magnetic flux density (B) is larger than threshold Bop,
the OUT pin turns on (low). If B removed toward Brp, the OUT pin
is latched “on” state prior to B < Brp. When B < Brp, the OUT pin
go into “off ” state.
Applications
•
•
•
•
Rotor Position Sensing
Current Switch
Encoder
RPM Detection
Ordering Information
AH1751 - X G - X - A
Package
P : SIP3
W : SC59
R : SC59R
Device
Green
Packing
G : Green
A : Ammo (Note 3)
B : Bulk (Note 4)
7 : Tape & Reel
Tube/Bulk
Package Packaging
Code
(Note 2) Quantity Part Number
Suffix
Ammo Box
Magnetic
Part
Quantity Number Characteristics
Suffix
4000/Box
-A
A
AH1751-PG-A-A
P
SIP3
NA
AH1751-PG-B-A
P
SIP3
1000
-B
NA
NA
NA
NA
A
AH1751-WG-7-A
W
SC59
NA
NA
3000/Tape & Reel
-7
NA
NA
A
AH1751-RG-7-A
R
SC59R
NA
NA
3000/Tape & Reel
-7
NA
NA
A
Notes:
NA
7” Tape and Reel
Part
Quantity
Number
Suffix
NA
NA
Magnetic
Characteristics
A
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
3. Ammo Box is for SIP3 Spread Lead.
4. Bulk is for SIP3 Straight Lead.
AH1751 Rev. 4
DS31436
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OCTOBER 2009
© Diodes Incorporated
AH1751
HALL EFFECT LATCH
Pin Assignment
(1) SIP3
(2) SC59
( Top View )
( Top View )
3. OUT
2. GND
1. VCC
3. Output
GND 2.
1 . VCC
(3) SC59R
( Top View )
3. VCC
GND 2.
1 . Output
Pin Descriptions
Pin Name
VCC
GND
OUT
AH1751 Rev. 4
DS31436
Description
Input Power
Ground
Output Stage
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© Diodes Incorporated
AH1751
HALL EFFECT LATCH
Block Diagram
VCC
1
REG.
3
OUT
AMP
2 GND
Absolute Maximum Ratings
Symbol
VCC
Vout (off)
Io (sink)
TST
TJ(MAX)
PD
(TA = 25°C)
Parameter
Supply Voltage
Output “OFF ” Voltage
Output “ON” Current
Storage Temperature Range
Maximum Junction Temperature
SIP3
SC59 and SC59R
Power Dissipation
Rating
20
20
100
-65~+150
+150
550
230
Unit
V
V
mA
°C
°C
mW
mW
Recommended Operating Conditions
Symbol
VCC
TA
Notes:
Parameter
Conditions
Supply Voltage
Operating Temperature Range
Operating (Note 5)
Operating
Min
Max
Unit
3.5
-40
20
125
V
°C
5. Operating, the output is switching as magnetic field change (S>300G, N<-300G).
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AH1751
HALL EFFECT LATCH
Electrical Characteristics
Symbol
Vout (SAT)
ICC
(TA = 25°C)
Parameter
Conditions
VCC = 12V, OUT ”ON”
Io = 50mA
VCC = 12V, OUT ”OFF”
Output Saturation Voltage
Supply Current
Magnetic Characteristics
Min
Typ.
Max
Unit
-
200
300
mV
-
3.5
6
mA
(TA = 25°C, VCC = 4~20V, Note 6)
A grade
Symbol
Bops(south pole to brand side)
Brps(south pole to brand side)
Bhy( Bopx − Brpx )
Notes:
Parameter
Operation Point
Release Point
Min
5
-70
Typ.
-
-
75
Hysteresis
(1mT = 10 Gauss)
Max
Unit
70
Gauss
-5
Gauss
-
Gauss
6. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
Operating Characteristics
S
S
Marking side
Marking side
N
N
(Output Voltage)
Vout
Vcc
Hig
h
Vd
Bhy
Lo
w
V SA
T
(SC59 and SC59R)
(SIP3)
Brp
0
Bop
( Magnetic Flux Density )
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DS31436
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© Diodes Incorporated
AH1751
HALL EFFECT LATCH
Performance Characteristics
(1) SIP3
TA (°C)
PD (mW)
TA (°C)
PD (mW)
25
550
105
198
50
440
110
176
P D (m W )
60
396
115
154
70
352
120
132
80
308
125
110
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
P o w e r D is s ip a tio n C u rve
600
500
400
300
200
100
0
00
-4
25
50
75
100
125
150
T A (°C )
(2) SC59 and SC59R (Commonly known as SOT23 in Asia)
TA (°C)
25
50
60
70
80
90
100
110
120
125
130
140
150
PD (mW)
230
184
166
147
129
110
92
74
55
46
37
18
0
P D (m W )
P o w e r D is s ip a tio n C u rve
300
200
100
0
-400
25
50
75
100
125
150
T A (°C )
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AH1751
HALL EFFECT LATCH
Marking Information
(1) SIP3
( Top View )
Y : Year : 0~9
WW : Week : 01~52, "52" represents
52 and 53 week
X : Internal Code : A~Z : Green
1751
Part Number
Y WW X
(2) SC59 and SC59R (Commonly known as SOT23 in Asia)
( Top View )
XX Y W X
Part Number
AH1751
AH1751
AH1751 Rev. 4
DS31436
XX : Identification code
Y : Year 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week; z represents
52 and 53 week
X : A~Z : Green
Package
SC59
SC59R
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Identification Code
RK
SK
OCTOBER 2009
© Diodes Incorporated
AH1751
HALL EFFECT LATCH
Package Information
(All Dimensions in mm)
(1) Package Type: SIP3 for Bulk pack
0.51m m
NO M
2.00m m
1.15m m
BRANDED
SURFACE
1
Active Area D epth
2
3
Sensor Location
Package Dimension
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DS31436
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AH1751
HALL EFFECT LATCH
Package Information
(Continued)
(2) Package Type: SIP3 for Ammo pack
(3) Package Type: SC59 and SC59R (Commonly known as SOT23 in Asia)
TOP VIEW
1.50/
1.70
0.35/0.50
2.70/
3.00
1.90
2.90/3.10
1.00/
1.30
0.10/0.20
0.013/0.10
0.95
0.35/0.55
0 O /8 O
AH1751 Rev. 4
DS31436
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OCTOBER 2009
© Diodes Incorporated
AH1751
HALL EFFECT LATCH
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, 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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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 website, harmless against all damages.
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Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
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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
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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 © 2009, Diodes Incorporated
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DS31436
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© Diodes Incorporated
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