Diodes AH1751 User Manual
AH1751
HALL EFFECT LATCH
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
• Operating Temperature: -40
• 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)
o
C~125oC
Applications
• Rotor Position Sensing
• Current Switch
• Encoder
• RPM Detection
Ordering Information
AH1751 - X G - X - A
General Description
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 p in
is latched “on” state prior to B < Brp. When B < Brp, the OUT pin
go into “off ” state.
Package
P : SIP3
W : SC59
R : SC59R
Green
G : Green
Packing
A : Ammo (Note 3)
B : Bulk (Note 4)
7 : Tape & Reel
Magnetic
Characteristics
A
Device
AH1751-PG-A-A P SIP3 NA NA NA NA 4000/Box -A A
AH1751-PG-B-A P SIP3 1000 -B NA NA NA NA A
AH1751-WG-7-A
AH1751-RG-7-A
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
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.
Package
http://www.diodes.com/products/lead_free.html
Packaging
Code
(Note 2)
W SC59 NA NA 3000/Tape & Reel -7 NA NA A
R SC59R NA NA 3000/Tape & Reel -7 NA NA A
Tube/Bulk 7” Tape and Reel Ammo Box
Quantity
Part Number
Suffix
Quantity
Part
Number
Suffix
Quantity
Part
Number
Suffix
Magnetic
Characteristics
AH1751 Rev. 4 1 of 9 OCTOBER 2009
DS31436 www.diodes.com © Diodes Incorporated
Pin Assignment
(1) SIP3 (2) SC59
( Top View )
3.
OUT
AH1751
HALL EFFECT LATCH
( Top View )
(3) SC59R
( Top View )
GND 2.
Pin Descriptions
Pin Name Description
VCC
GND Ground
OUT Output Stage
Input Power
3.
1.
2. GND
1.
V
CC
Output
3.
Output
GND 2.
1.V
CC
V
CC
AH1751 Rev. 4 2 of 9 OCTOBER 2009
DS31436 www.diodes.com © Diodes Incorporated
)
Block Diagram
V
CC
1
REG.
AMP
AH1751
HALL EFFECT LATCH
3
OUT
GND
2
Absolute Maximum Ratings (T
Symbol Parameter Rating Unit
VCC Supply Voltage 20 V
V
(off)
out
Io (sink)
TST Storage Temperature Range -65~+150
T
J(MAX
PD Power Dissipation
Output “OFF ” Voltage 20 V
Output “ON” Current 100 mA
Maximum Junction Temperature +150
= 25°C)
A
SIP3 550 mW
SC59 and SC59R 230 mW
Recommended Operating Conditions
Symbol Parameter Conditions Min Max Unit
VCC Supply Voltage Operating (Note 5) 3.5 20 V
TA Operating Temperature Range Operating -40 125
Notes: 5. Operating, the output is switching as magnetic field change (S>300G, N<-300G).
°C
°C
°C
AH1751 Rev. 4 3 of 9 OCTOBER 2009
DS31436 www.diodes.com © Diodes Incorporated
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