Document Number: MC33926

Rev. 9.0, 12/2009

Freescale Semiconductor

Advance Information

* This document contains certain information on a new product.

Specifications and information herein are subject to change without notice.

© Freescale Semiconductor, Inc., 2007-2009. All rights reserved.

5.0 A Throttle Control H-Bridge

The 33926 is a monolithic H-Bridge Power IC designed primarily

for automotive electronic throttle control, but is applicable to any low-

voltage DC servo motor control application within the current and

voltage limits stated in this specification.

The 33926 is able to control inductive loads with currents up to

5.0 A peak. RMS current capability is subject to the degree of

heatsinking provided to the device package. Internal peak-current

limiting (regulation) is activated at load currents above 6.5 A ± 1.5 A.

Output loads can be pulse width modulated (PWM’ed) at frequencies

up to 20 kHz. A load current feedback feature provides a proportional

(0.24% of the load current) current output suitable for monitoring by a

microcontroller’s A/D input. A Status Flag output reports under-

voltage, over-current, and over-temperature fault conditions.

Two independent inputs provide polarity control of two half-bridge

totem-pole outputs. Two independent disable inputs are provided to

force the H-Bridge outputs to tri-state (high-impedance off-state). An

inverted input changes the IN1 and IN2 inputs to LOW = true logic.

Features

• 5.0 to 28 V continuous operation (transient operation from 5.0 to

40 V)

• 225 m

•3.0 V and 5.0 V TTL / CMOS logic compatible inputs

• Over-current limiting (Regulation) via an internal constant-off-time

PWM

• Output short-circuit protection (short to VPWR or ground)

• Temperature-dependent current-limit threshold reduction

• All Inputs have an internal source/sink to define the default (floating input) states

• Sleep mode with current draw < 50 µA (with inputs floating or set to match default logic states)

• Pb-free packaging designated by suffix code PNB

Figure 1. 33926 Simplified Application Diagram

ORDERING INFORMATION

Device

Temperature

Package

MC33926PNB/R2

-40°C to 125°C

32 PQFN

SCALE 2:1

PNB SUFFIX (Pb-FREE)

32-PIN PQFN

Bottom View

33926

AUTOMOTIVE THROTTLE H-BRIDGE

ACTUATOR/ MOTOR EXCITER

98ARL10579D

SF

FB

IN1

IN2

INV

SLEW

D1

D2

EN

VPWR

CCP

OUT1

OUT2

PGND

AGND

MCU

33926

MOTOR