MC34929

www.DataSheet4U.com Freescale Semiconductor Advance Information Document Number: MC34929 Rev. 7.0, 11/2006 Brushless DC 1.0 AMP 28 VOLT Motor Driver IC The 34929 Brushless DC (BLDC) Motor Driver IC is a complete BLDC motor driver system in one chip. It is designed to efficiently drive three-phase BLDC motors up to 1A and 28V, and has built in protection features making it ideal for a variety of consumer, portable, and office applications containing small motors. It incorporates digital I/O, making it easy to use with an MCU in a closed-loop motor control system. It has a built-in Hall-effect sensors interface and a Hall sensors voltage supply, so it can operate BLDC motors as a stand-alone controller/ driver. Its sophisticated analog/mixed-signal state machine accommodates several modes of operation, including: Forward (CW), Reverse (CCW), Run/Stop, Braking, Variable Speed (External PWM), and Torque Limit (maximum-current-limit) modes. Features Single-Supply Operation (8V–28V) Built-in Hall Sensors Controlled-Supply (VH) 3-Phase Hall Sensors Interface Two Tachometer Outputs (1X and 3X Hall Frequency) Adjustable Maximum Current Limit (Torque Limiting) Adjustable Stalled Rotor Detection and Protection Short Circuit Detection and Protection Over-Temperature Detection and Thermal Shutdown Undervoltage Detection and Shutdown Pb-Free Packaging Designated by Suffix Code EP. 34929 BRUSHLESS DC MOTOR DRIVER QFN SUFFIX 98ARH99033A 24-PIN QFN (4X4X1) ORDERING I...