Document Number: MC33887
Rev. 13.0, 10/2008
Freescale Semiconductor
Technical Data
5.0 A H-Bridge with Load
Current Feedback
33887
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 RDS(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.
H-BRIDGE
DH SUFFIX
VW SUFFIX (Pb-FREE)
98ASH70273A
20-PIN HSOP
PNB SUFFIX
98ASA10583D
36-PIN PQFN
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).
Bottom View
DWB SUFFIX
EK SUFFIX (Pb-FREE)
98ASA10506D
The 33887 is parametrically specified over a temperature range of
-40°C ≤ TA ≤ 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.
54-PIN SOICW-EP
ORDERING INFORMATION
Features
Temperature
Package
Device
Range (T )
• Fully specified operation 5.0 V to 28 V
A
• Limited operation with reduced performance up to 40 V
• 120 mΩ RDS(ON) Typical H-Bridge MOSFETs
• TTL/CMOS Compatible Inputs
• PWM Frequencies up to 10 kHz
• Active Current Limiting (Regulation)
• Fault Status Reporting
MC33887DH/R2
MC33887VW/R2
MC33887AVW/R2
MC33887PNB/R2
MC33887DWB/R2
MCZ33887EK/R2
20 HSOP
-40°C to 125°C
36 PQFN
54 SOICW-EP
• 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 EK
6.0 V
V+
33887
CCP
V+
IN
FS
OUT1
OUT
EN
OUT
IN1
IN2
D1
D2
FB
MCU
OUT
OUT
OUT
A/D
MOTOR
OUT2
PGND
AGND
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.
© Freescale Semiconductor, Inc., 2007 - 2008. All rights reserved.