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33887

Description
STEPPER MOTOR CONTROLLER, PDSO20
Categoryaccessories   
File Size464KB,28 Pages
ManufacturerMotorola ( NXP )
Websitehttps://www.nxp.com
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33887 Overview

STEPPER MOTOR CONTROLLER, PDSO20

Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33887
Rev 9.0, 10/2004
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 terminal 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
T
A
125°C and a voltage range of 5.0 V
V+
28 V. The IC can also
be operated up to 40 V with derating of the specifications.
Features
• 5.0 V to 40 V Continuous Operation
• 120 mΩ R
DS(ON)
H-Bridge MOSFETs
• TTL/CMOS Compatible Inputs
• PWM Frequencies up to 10 kHz
• Active Current Limiting (Regulation) via Internal Constant OFF-Time
PWM (with Temperature-Dependent Threshold Reduction)
• Output Short Circuit Protection (Short to V+ or Short to GND)
• Undervoltage Shutdown
• Fault Status Reporting
• Sleep Mode with Current Draw
≤50 µA
(Inputs Floating or Set to Match
Default Logic States)
• Pb-Free Packaging Designated by Suffix Codes VW and PNB
33887
5.0 A H-BRIDGE WITH LOAD
CURRENT FEEDBACK
Freescale Semiconductor, Inc...
DH SUFFIX
VW (Pb-FREE) SUFFIX
CASE 979-04
20-TERMINAL HSOP
PNB (Pb-FREE) SUFFIX
CASE 1503-01
36-TERMINAL PQFN
Bottom View
DWB SUFFIX
CASE 1390-01
54-TERMINAL SOICW-EP
ORDERING INFORMATION
Device
MC33887DH/R2
PC33887VW/R2
MC33887PNB/R2
MC33887DWB/R2
-40°C to 125°C
-40°C to 125°C
-40°C to 125°C
Temperature
Range (T
A
)
Package
20 HSOP
36 PQFN
54 SOICW-EP
33887 Simplified Application Diagram
Simplified Application Diagram
33887 Simplified Application Diagram
5.0 V
CCP
33887
33887
V+
OUT1
V+
IN
OUT
OUT
OUT
OUT
OUT
A/D
FS
EN
IN1
IN2
D1
D2
FB
MOTOR
OUT2
PGND
AGND
MCU
© Motorola, Inc. 2004
For More Information On This Product,
Go to: www.freescale.com

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