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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 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)
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 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
Green G : Green
Packing A : Ammo (Note 3) B : Bulk (Note 4) 7 : Tape & Reel
7" Tape and Reel Part Quantity Number Suffix NA NA NA 3000/Tape & Reel 3000/Tape & Reel NA -7 -7
Magnetic Characteristics A
Device AH1751-PG-A-A AH1751-PG-B-A AH1751-WG-7-A AH1751-RG-7-A
Notes:
Tube/Bulk Package Packaging Code (Note 2) Quantity Part Number Suffix P P W R SIP3 SIP3 SC59 SC59R NA 1000 NA NA NA -B NA NA
Ammo Box Magnetic Part Quantity Number Characteristics Suffix 4000/Box -A A NA NA NA NA NA NA A A 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.
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AH1751
HALL EFFECT LATCH
Pin Assignment
(1) SIP3 (2) SC59
( Top View )
3. OUT 2. GND 1. VCC
( Top View ) 3. Output GND 2. 1 . VCC
(3) SC59R
( Top View ) 3. VCC GND 2. 1 . Output
Pin Descriptions
Pin Name VCC GND OUT Description Input Power Ground Output Stage
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HALL EFFECT LATCH
Block Diagram
VCC 1
REG.
3
AMP
OUT
2 GND
Absolute Maximum Ratings
Symbol VCC Vout (off) Io (sink) TST TJ(MAX) PD
(TA = 25C)
Parameter Supply Voltage Output "OFF " Voltage Output "ON" Current Storage Temperature Range Maximum Junction Temperature Power Dissipation SIP3 SC59 and SC59R
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 Supply Voltage Operating Temperature Range
Conditions Operating (Note 5) Operating
Min 3.5 -40
Max 20 125
Unit V C
5. Operating, the output is switching as magnetic field change (S>300G, N<-300G).
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HALL EFFECT LATCH
Electrical Characteristics
Symbol Vout (SAT) ICC Parameter Output Saturation Voltage Supply Current
(TA = 25C)
Conditions VCC = 12V, OUT "ON" Io = 50mA VCC = 12V, OUT "OFF"
Min -
Typ. 200 3.5
Max 300 6
Unit mV mA
Magnetic Characteristics
A grade Symbol Bops(south pole to brand side) Brps(south pole to brand side) Bhy( Bopx - Brpx )
Notes:
(TA = 25C, VCC = 4~20V, Note 6)
Parameter Operation Point Release Point Hysteresis
Min 5 -70 -
Typ. 75
(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
Vout (Output Voltage) Vcc
Hig h
S
S
Marking side
Vd Bhy
Lo w
Marking side
N (SC59 and SC59R)
N (SIP3)
V SA
T
Brp
0
Bop
( Magnetic Flux Density )
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HALL EFFECT LATCH
Performance Characteristics
(1) SIP3 TA (C) PD (mW) TA (C) PD (mW)
P D (m W ) 600 500 400 300 200 100 0 0 -4 0 25 50 75 100 125 150 TA (C )
25 550 105 198
50 440 110 176
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
(2) SC59 and SC59R (Commonly known as SOT23 in Asia) TA (C) PD (mW) 25 230
P D (m W ) 300
50 184
60 166
70 147
80 129
90 110
100 92
110 74
120 55
125 46
130 37
140 18
150 0
P o w e r D is s ip a tio n C u rve
200
100
0 0 -4 0 25 50 75 100 125 150 T A (C )
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HALL EFFECT LATCH
Marking Information
(1) SIP3
( Top View )
Part Number
1751
Y WW X
Y : Year : 0~9 WW : Week : 01~52, "52" represents 52 and 53 week X : Internal Code : A~Z : Green
(2) SC59 and SC59R (Commonly known as SOT23 in Asia)
( Top View )
XX Y W X
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
Identification Code RK SK
Part Number AH1751 AH1751
Package SC59 SC59R
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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
2
3
Active Area D epth
Package Dimension
Sensor Location
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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)
0.35/0.50
TOP VIEW
1.50/ 1.70
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
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HALL EFFECT LATCH
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