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34921

Freescale Semiconductor
Part Number 34921
Manufacturer Freescale Semiconductor
Description Configurable Motor Driver IC
Published Aug 8, 2007
Detailed Description www.DataSheet4U.com Freescale Semiconductor Technical Data MC34921 Rev 5.0, 07/2005 Configurable Motor Driver IC with...
Datasheet PDF File 34921 PDF File

34921
34921

Overview
www.
DataSheet4U.
com 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, communication, 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 • Complete 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 ADCMB BDCMA BPWM BDCMB GND DC Motor B DC Motor A B SB/LSOUT2 SA/CDCMB DGND Figure 1.
34921 Simplified Application Diagram *This document contains information on a product under development.
Specificat...


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