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參數(shù)資料
| 型號： | MC34921R2 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Configurable Motor Driver IC with Power Supplies |
| 中文描述： | 可配置的馬達驅(qū)動IC的電源供應器 |
| 文件頁數(shù)： | 1/36頁 |
| 文件大小： | 603K |
| 代理商： | MC34921R2 |
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MC34921
Rev 4.0, 06/2005
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2005. All rights reserved.
*This document contains information on a product under development.
Specifications and information herein are subject to change without notice.
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, over-
voltage, 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
Figure 1. 34921 Simplified Application Diagram
MOTOR DRIVERS & POWER SUPPLIES
34921
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
Package
MC34921AE/R2
0°C to 70°C
64 LQFP-EP
AE SUFFIX (Pb FREE)
98ARH98426A
64-LEAD LQFP-EP
B+
B+
34921
GATEOUT
5.0 V
3.3 V
VCORE
Serial
Ports
A/D
Inputs
SA/CDCMA
SB/LSOUT1
SA/CDCMB
SB/LSOUT2
B+
MCU
5.0 V / 3.3 V
High-Side
MOSFET
B
A
A
B
Step
Motor
C
B+
MISO
MOSI
SCLK
CE
CPWMA
CPWMB
DC
Motor
A
ADCMA
ADCMB
APWM
DC
Motor
B
BDCMA
BDCMB
BPWM
DGND
GND
AN0
AN3
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