AH1751-WG-7-A

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. 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 ) 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 AH1751 Rev. 4 DS31436 2 of 9 www.diodes.com OCTOBER 2009 © Diodes Incorporated AH1751 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 = 25°C) 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