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MC34921AER2 Arkusz danych(PDF) 1 Page - Freescale Semiconductor, Inc

Numer części MC34921AER2
Szczegółowy opis  Configurable Motor Driver IC with Power Supplies
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Producent  FREESCALE [Freescale Semiconductor, Inc]
Strona internetowa  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC34921AER2 Arkusz danych(HTML) 1 Page - Freescale Semiconductor, Inc

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MC34921
Rev 5.0, 07/2005
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
H-BRIDGE MOTOR DRIVER
AND POWER SUPPLY
34921
ORDERING INFORMATION
Device
Temperature
Range (TA)
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
B+
MISO
MOSI
SCLK
CE
CPWMA
CPWMB
DC
Motor
ADCMA
ADCMB
APWM
DC
Motor
BDCMA
BDCMB
BPWM
DGND
GND
AN0
AN3
A
B
C


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