34921 Datasheet | Freescale Semiconductor

.. Freescale Semiconductor Technical Data MC34921 Rev 5.0, 07/2005 Configurable Motor Driver IC with Power Supplies The 34921 power IC integrates multiple motor drivers, multiple power regulators, and most other analog functions a small consumer motion-enabled product needs. The 34921’s circuitry is fully protected with current limiting, short-circuit shutdown, over-temperature, overvoltage, and under-voltage detection. Supervisory functions can be read and programmed through a 8-MHz Serial Interface. A 5.0 V dual-mode (linear or switching) voltage regulator, 3.3 V switching buck regulator, and a voltage-selectable (1.5 V, 1.8 V, 2.5 V) linear regulator provide power management. Two H-Bridges and a configurable motor driver are provided for controlling two dc motors and one unipolar stepper motor. The highly integrated 34921 brings together sensing, munication, power management, system protection, and motor control in one device. Features - Two Functionally Identical Pulse-Width Modulated (PWM) DC Motor Drivers - One Switching, One Linear, and One Dual-Mode Regulator - Dual Mode Switching/Linear 5.0 V Regulator - Supervisory Functions (Power-ON Reset and Error Reset Circuitry) - 8-Channel, 8-Bit Analog-to-Digital Converter (ADC) - Charge Pump for High-Side MOSFET Drive - plete Support for - Analog Quadrature Encoder - Pb-Free package is designated by suffix AE 5.0 V / 3.3 V Serial MCU Ports A/D 34921 H-BRIDGE MOTOR DRIVER AND POWER SUPPLY AE SUFFIX (Pb-Free) 98ARH98426A 64-LEAD LQFP-EP ORDERING INFORMATION Device MC34921AE/R2 Temperature Range (TA) 0°C to 70°C Package 64 LQFP-EP 34921 MISO MOSI SCLK CE AN0 B+ B+ High-Side MOSFET GATEOUT 5.0 V 3.3 V VCORE ADCMA Inputs A B+ B Step Motor C A B+ AN3 SA/CDCMA SB/LSOUT1 CPWMA CPWMB APWM...