Diodes Incorporated AH375
AH375 is an integrated Hall-Effect latched sensor designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open drain output. When the magnetic flux density (B) is larger than operate point (Bop), output is switched on (OUT pin is pulled low).DESCRIPTION
Pin Assignments An internal band-gap regulator provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply range. The output state is held on until a magnetic flux density reversal falls below Brp. When B is less than Brp, the output is switched off. (Top View) SIP-3L 3. OUT 2. GND 1. Vdd (Top View) GND 2. SC59 3. OUT 1. Vdd The AH375 is available in SIP-3L and SC59 packages.FEATURES
● Bipolar Hall-Effect latch sensor● 2.2V to 20V DC Operating voltage
● Temperature compensation
● Open drain pre-driver
● 25mA maximum output sink current
● Operating temperature: -40°C to +125°C
● SIP-3L and SC59 packages (SC59 is commonly known as SOT23 in Asia)
● Green Molding Compound (No Br, Sb) (Note 1)
APPLICATIONS
● Brush-Less DC Motor● Brush-Less DC Fan
● Revolution Counting
● Speed Measurement Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at Typical Application Circuit Vdd AH375 Document number: DS31172 Rev.