MPC17531A
Dual H-Bridge Motor Driver
Analog Products Fact Sheet
DUAL H-Bridge
Power
Actuation
VDD
CRES
C1L
C1H
C2L
C2H
IN2B
PSAVE
IN2A
IN1A
OUT2B
OUT2A
OUT1B
OUT1A
VM
GND
MCU
IN1B
3.0 V 5.0 V
17531A
Bipolar
Step
Motor
N
S
17531A SIMPLIFIED APPLICATION DIAGRAM
DESCRIPTION
The 17531A is a monolithic dual H-Bridge power IC
ideal for portable electronic applications containing
bipolar step motors and/or brush DC-motors (e.g.,
cameras and disk drive head positioners).
The 17531A operates from 2.0 V to 8.6 V using the
internal charge pump, with independent control of
each H-Bridge via parallel MCU interface. The
device features built-in shoot-through current
protection and an undervoltage shutdown function.
The 17531A has four operating modes: Forward,
Reverse, Brake, and Tri-Stated (High Impedance).
The 17531A has a low total RDS(ON) of 1.2 Ω
(max @ 25°C).
The 17531A efficiently drives many types of
micromotors with low power dissipation owing to its
low output resistance and high output slew rates.
The H-Bridge outputs can be independently pulse
width modulated (PWM’ed) at up to 200 kHz for
speed/torque and current control.
APPLICATIONS
• Portable Electronics
• SLR Lens Shutter Control
• Optical Disc Drive (MO, DVD, and CD)
•DSC, DVC
PERFORMANCE TYPICAL VALUES
Outputs 2 ch
Output Voltage, VDD 0.7 V
Peak Current 1.4 A
Motor Operating Voltage 2.0 V – 8.6 V
Logic Operating Voltage 2.7 V – 3.3 V
Input PWM max 200 kHz
Operating Temperature -20°C ≤ TA ≤ 65°C
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc.
All other product or service names are the property of their respective owners.
© Freescale Semiconductor, Inc. 2005. All rights reserved.
MPC17531AFS
REV 2.0
QUESTIONS
• Are you working on portable electronic
powered applications?
• Do you need to control a bipolar stepper or
brush DC-motor in a 3.3 V logic system?
• Are you designing a motion control system
using motors up to 1.4 A (peak) and 8.6 V
DC?
FEATURES
• Low total RDS(ON) 8.0 W (typ), 1.2 W (max) @ 25×C
• Shoot-through current protection circuit
• Built-in charge pump circuit
• Low power consumption
• Undervoltage detection and shutdown circuit
• Power save mode with current draw £ 2.0 mA
• Pb-free packaging designated by suffix codes EV and EP
• Additional devices available for comparison in Analog Product Selector
Guide, SG1002 and Automotive Product Selector Guide, SG187.
PROTECTION DETECT
SHUT
DOWN
Undervoltage ! !
CUSTOMER BENEFITS
• Easy MCU interfacing and control
• Undervoltage protection to prevent erratic operation
• High PWM rate for enhanced motor control
• Low profile package for portable designs
• Integral charge pump for simpler system
• Low quiescent current
• Two H-Bridges integrated in one package
• Reduced design time
ORDERING INFORMATION
Device Temperature
Range (TA)
Package
**17531AEV/EL -20°C to 65°C 20 VMFP
**17531AEP/R2 24 QFN
Data Sheet Order Number MPC17531AF
**Prefix Index:
PC = Engineering Samples; MC = Production
Contact Sales for Evaluation Kit Availability
20 VMFP
0.65 mm Pitch
7.25 mm x 5.35 mm Body
24 QFN
0.5 mm Pitch
3.25 mm x 3.25 mm Body
2.75 mm x 2.75 mm Exposed Pad
