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MC33887APR2: Description5.0 A H-Bridge with Load Current Feedback; Categoryunclassified; File Size568KB，38 Pages; ManufacturerFREESCALE (NXP)

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5.0 A H-Bridge with Load Current Feedback

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Freescale Semiconductor

Technical Data

Document Number: MC33887

Rev. 14.0, 3/2011

5.0 A H-Bridge with Load

Current Feedback

The 33887 is a monolithic H-Bridge Power IC with a load current

feedback feature making it ideal for closed-loop DC motor control.

The IC incorporates internal control logic, charge pump, gate drive,

and low R

DS(ON)

MOSFET output circuitry. The 33887 is able to

control inductive loads with continuous DC load currents up to 5.0 A,

and with peak current active limiting between 5.2 A and 7.8 A. Output

loads can be pulse width modulated (PWM-ed) at frequencies up to

10 kHz. The load current feedback feature provides a proportional (1/

375th of the load current) constant-current output suitable for

monitoring by a microcontroller’s A/D input. This feature facilitates

the design of closed-loop torque/speed control as well as open load

detection.

A Fault Status output pin reports undervoltage, short circuit, and

overtemperature conditions. Two independent inputs provide polarity

control of two half-bridge totem-pole outputs. Two disable inputs

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

The 33887 is parametrically specified over a temperature range of

-40°C

≤

125°C and a voltage range of 5.0 V

≤

V+

≤

28 V.

Operation with voltages up to 40 V with derating of the specifications.

Features

•

Fully specified operation 5.0 V to 28 V

Limited operation with reduced performance up to 40 V

120 mΩ R

DS(ON)

Typical H-Bridge MOSFETs

TTL/CMOS Compatible Inputs

PWM Frequencies up to 10 kHz

Active Current Limiting (Regulation)

Fault Status Reporting

Sleep Mode with Current Draw

≤50 μA

(Inputs Floating or Set

to Match Default Logic States)

6.0 V

V+

Device

MC33887APVW/R2

MC33887PFK/R2

MC33887PEK/R2

33887

H-BRIDGE

VW SUFFIX (Pb-FREE)

98ASH70702A

20-PIN HSOP

FK SUFFIX

98ASA10583D

36-PIN PQFN

Bottom View

EK SUFFIX (Pb-FREE)

98ASA10506D

54-PIN SOICW-EP

ORDERING INFORMATION

Temperature

Range (T

)

-40°C to 125°C

Package

20 HSOP

36 PQFN

54 SOICW-EP

33887

CCP

OUT

IN1

IN2

OUT2

PGND

AGND

MOTOR

V+

OUT1

MCU

OUT

A/D

Figure 1. 33887 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.

MC33887APR2 Related Products

	MC33887APR2	33887_11	MC33887PR2	MC33887PEK
Description	5.0 A H-Bridge with Load Current Feedback	5.0 A H-Bridge with Load Current Feedback	5.0 A H-Bridge with Load Current Feedback	5.0 A H-Bridge with Load Current Feedback

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