Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

Document Number: MPC17531A

Rev. 3.0, 2/2008

Freescale Semiconductor

Technical Data

© Freescale Semiconductor, Inc., 2005. All rights reserved.

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

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

• 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

Figure 1. 17531A Simplified Application Diagram

DUAL H-BRIDGE

VMFP SUFFIX

EV SUFFIX (PB-FREE)

98ASA10616D

20-TERMINAL VMFP

17531A

ORDERING INFORMATION

Device

Temperature

Package

MPC17531AEV/EL

-20°C to 65°C

20 VMFP

MPC17531AEP/R2

24 QFN

QFN SUFFIX

EP SUFFIX (PB-FREE)

98ARL10577D

24-TERMINAL QFN

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

VDD