AH173

AH173 INTERNAL PULL-UP HALL EFFECT LATCH FOR HIGH TEMPERATURE Features Bipolar Hall Effect Latch Sensor 3V to 20V DC Operation Voltage Built-in Pull-Up Resistor 25mA Output Sink Current Operating Temperature: −40°C ~ +125°C Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Lead Free Package: SIP-3L, SC59-3L Green Package: SC59-3L General Description AH173 is a single-digital-output Hall-effect sensor with pull-up resistor 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 output driver with a pull-up resistor (Rpu). 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 operate point (Bop), the OUT pin turns on (low). If B moves toward release point (Brp), the OUT pin is latched “on” state prior to B < Brp. When B < Brp, the OUT pin goes into “off ” state. Applications Rotor Position Sensing Current Switch Encoder RPM Detection Ordering Information AH 173 -XX X-X Package P: SIP-3L W: SC59-3L Lead-Free Packing - 7 : Taping L : Lead Free G : Green (Note3) - B : Bulk (Note 4) - A : Ammo Box (Note 5) Magnetic Characteristics A or B Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Appl...