A3938SLDTR-T(2008) データシート - Allegro MicroSystems

Description
   The A3938 is a three-phase, brushless DC motor controller. It has a high-current gate drive capability that allows driving of a wide range of power MOSFETs and can support motor supply voltages to 50 V. The A3938 integrates a bootstrapped high-side driver to minimize the external component count required to drive N-channel MOSFET drivers.

FEATUREs and Benefits
▪ Drives a wide range of N-channel MOSFETs
▪ Low-side synchronous rectification
▪ Power MOSFET protection
▪ Adjustable dead time for cross-conduction protection
▪ Selectable coast or dynamic brake on power-down or
   RESET input
▪ Fast/slow current decay modes
▪ Internal PWM current control
▪ Motor lead short-to-ground protection
▪ Internal 5 V regulator
▪ Fault diagnostic output
▪ Thermal shutdown
▪ Undervoltage protection