Freescale Semiconductor
Technical Data
Document Number: MPC17531A
Rev. 3.0, 2/2008
700 mA Dual H-Bridge Motor
Driver with 3.0 V Compatible
Logic I/O
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
R
DS(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.
Features
•
•
•
•
•
•
•
•
•
Low Total RDS(ON) 0.8 W (Typ), 1.2
Ω
(Max) @ 25
°C
Output Current 0.7 A (DC)
Shoot-Through Current Protection Circuit
PWM Control Input Frequency up to 200 kHz
Built-In Charge Pump Circuit
Low Power Consumption
Undervoltage Detection and Shutdown Circuit
Power Save Mode with Current Draw
≤
2.0
µA
Pb-Free Packaging Designated by Suffix Codes EV and EP
17531A
DUAL H-BRIDGE
VMFP SUFFIX
EV SUFFIX (PB-FREE)
98ASA10616D
20-TERMINAL VMFP
QFN SUFFIX
EP SUFFIX (PB-FREE)
98ARL10577D
24-TERMINAL QFN
ORDERING INFORMATION
Device
MPC17531AEV/EL
MPC17531AEP/R2
Temperature
Range (T
A
)
-20°C to 65°C
Package
20 VMFP
24 QFN
3.0 V
5.0 V
17531A
VDD
VM
C1L
C1H
C2L
OUT1A
C2H
CRES OUT1B
IN1A OUT2A
IN1B OUT2B
IN2A
IN2B
PSAVE
GND
Bipolar
Step
Motor
S
N
MCU
Figure 1. 17531A Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2005. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
