27V Open-Drain Hall Effect Latch
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The DIODES™ AH3712 is a high-voltage, high-sensitivity, Hall-effect latch IC designed for commutation of brushless DC motors, flow meters, linear encoders, and position sensors in industrial and consumer home appliances and personal care applications. To support a wide range of demanding applications, the design is optimized to operate over a 3.0V to 27V supply range. With chopper stabilized architecture and an internal bandgap regulator to provide temperature-compensated supply for internal circuits, the AH3712 provides a reliable solution over the whole operating range. The output also has an overcurrent limit.
The single open-drain output can be switched on with a South pole of sufficient strength and switched off with a 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 and latched until magnetic-flux density reverses and becomes lower than the release point (BRP).
|Compliance(Only Automotive supports PPAP)||Standard|
|Output Type||Open Drain|
|Active Output State (B > Bop)||Low|
|Inactive Output State (B < Brp)||High-Z|
|Operating Voltage (V)||3 to 27|
|Average Supply Current (mA)||2.8|
|Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)||10|
|Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)||25|
|Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)||40|
|Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)||-40|
|Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)||-25|
|Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)||-10|
|Output Current Capability (mA)||50|
|Operating Ambient Temperature (°C)||-40 to 125|