Datasheet > MC34921

MC34921

更新时间： 2024-11-03 21:55:43

品牌	Logo	应用领域
其他 - ETC		电机驱动
页数	文件大小	规格书
36页	602K
描述
Configurable Motor Driver IC with Power Supplies

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MC34921 数据手册

MC34921

Rev 4.0, 06/2005

Freescale Semiconductor

Technical Data

Configurable Motor Driver IC

with Power Supplies

34921

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, over-

voltage, and under-voltage detection. Supervisory functions can be

read and programmed through a 8-MHz Serial Interface.

MOTOR DRIVERS & POWER SUPPLIES

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.

AE SUFFIX (Pb FREE)

98ARH98426A

64-LEAD LQFP-EP

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

ORDERING INFORMATION

Temperature

Device

Package

Range (T )

MC34921AE/R2

0°C to 70°C

64 LQFP-EP

B+

5.0 V / 3.3 V

34921

Serial MISO

MOSI

High-Side

MOSFET

MCU

GATEOUT

5.0 V

3.3 V

SCLK

Ports

A/D

VCORE

AN0

AN3

ADCMA

APWM

Inputs

B+

Motor

SA/CDCMA

SB/LSOUT1

B+

ADCMB

BDCMA

BPWM

CPWMA

CPWMB

Step

Motor

SB/LSOUT2

SA/CDCMB

BDCMB

GND

DGND

Figure 1. 34921 Simplified Application Diagram

*This document contains information on a product under development.

Specifications and information herein are subject to change without notice.

12 3 4 5 6 7...36

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