Diodes Inc

The AH3761 is a high sensitivity CMOS Halls effect latch sensor for single-phase brushless DC (BLDC) fans and motor commutation applications. The AH3761 has an integrated band-gap voltage regulator, Hall-voltage transducer, amplifier, chopper stabilization, Schmitt trigger and open-drain output. With wide operating voltage and temperature range, AH3761 is a small versatile Hall-effect latch devices that turns on with south magnetic field of sufficient strength and turns off with north magnetic field of sufficient strength. It retains the output state when magnetic field is removed. The AH3761 is available in SC59 (SOT23) and SIP3 (TO-92) packages.

The AH3762Q is an AECQ100 qualified high voltage high sensitivity Automotive Hall Effect latch IC designed for brushless DC motor commutation, speed measurement, angular or linear encoders and position sensors in automotive applications. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3762Q provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has a current limit and a Zener clamp. The single open drain output can be switched on with South pole of sufficient strength and switched off with North pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (Bop) the output is switched on (pulled low). The output is held latched until magnetic flux density reverses and becomes lower than the release point (Brp). For the same magnetic pole to the part marking surface, the output switch on and off operation in SC59 is opposite to the SOT23 package. SOT23 and SIP-3 packages will require south pole to the part marking side to operate while SC59 will require south pole to the non-part marking side. The AH3762Q is available in industry standard SOT23, SC59 and SIP-3 packages.

TN1.pdf

TN1.pdf

TN1.pdf

TN1.pdf

TN1.pdf

TN1.pdf

The AH3772 is a high voltage high sensitivity Hall Effect latch IC designed for commutation of brushless DC motor, flow meters, linear encoders and position sensors in industrial and consumer home appliance and personal care applications. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3772 provides a reliable solution over the whole operating range. For robustness and protection, the device has a reverse blocking diode with a Zener clamp on the supply. The output has a current limit and a Zener clamp.