AH372-P-B Diodes Incorporated

AH372 INTERNAL PULL-UP HALL EFFECT LATCH Description Pin Assignments AH372 is a single-digital-output Hall-Effect latch sensor with internal (Top View) pull-up resistor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier 3. OUT GND 2. to amplify Hall voltage, and a comparator to provide switching 1. V DD hysteresis for noise rejection, and an output driver with a pull-up resistor. An internal band-gap regulator provides a temperature SC59 and SOT23 compensated supply voltage for internal circuits and allows a wide operating supply range. (Front View) When the magnetic flux density (B) perpendicular to the package is 3. OUT larger than operation point (B ), output is switched on (OUT pin is OP 2. GND pulled low). The output state is held on until a magnetic flux density reversal falls below B . When B is less than B , the output is RP RP 1. V DD switched off. SIP-3 (Bulk Pack) The AH372 is available in SIP-3 (Ammo Pack), SIP-3 (Bulk Pack), SC59 and SOT23 packages. Applications Features Rotor Position Sensing for Motor Commutation Encoder Bipolar Hall Effect Latch Operation Speed Measurement RPM Monitor 2.2V to 20V Operating Range Contact-Less Current Switch Single Output with Built-in Pull-up Resistor 25mA output Sink Capability -40C to +125C Operating Temperature Industry Standard SIP-3 (Ammo Pack), SIP-3 (Bulk Pack), SC59 and SOT23 Packages Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See AH372 Typical Application Circuits (cont.) V DD OUT AH372 C IN GND Typical AH372 Circuit Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical. IN Pin Descriptions Packages: SC59, SOT23, SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) Pin Number Pin Name Function 1 Power Supply Input V DD 2 GND Ground 3 OUT Output Functional Block Diagram V DD 1 R PU Regulator 3 OUT 2 Hall Plate Amp 2 GND 2 of 12 AH372 August 2016 Diodes Incorporated www.diodes.com Document number: DS38853 Rev. 1 - 2 NEW PRODUCT