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 1 of 9 www.diodes.com 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 2 of 9 www.diodes.com OCTOBER 2009 © 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). AH1751 Rev. 4 DS31436 3 of 9 www.diodes.com OCTOBER 2009 © Diodes Incorporated 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 ) AH1751 Rev. 4 DS31436 4 of 9 www.diodes.com OCTOBER 2009 © 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 ) AH1751 Rev. 4 DS31436 5 of 9 www.diodes.com OCTOBER 2009 © Diodes Incorporated 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 6 of 9 www.diodes.com 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 AH1751 Rev. 4 DS31436 7 of 9 www.diodes.com OCTOBER 2009 © Diodes Incorporated 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 8 of 9 www.diodes.com 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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