參數(shù)資料
型號(hào)： MCZ33887EKR2DH
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： 5.0 A H-Bridge with Load Current Feedback
中文描述： 5.0的H -橋的負(fù)載電流反饋
文件頁(yè)數(shù)： 1/37頁(yè)
文件大小： 524K
代理商： MCZ33887EKR2DH
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. All rights reserved.
Document Number: MC33887
Rev. 12.0, 2/2007
Freescale Semiconductor
Technical Data
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
≤
T
A
≤
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 m
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
μ
A (Inputs Floating or Set
to Match Default Logic States)
Pb-Free Packaging Designated by Suffix Codes VW and EK
Figure 1. 33887 Simplified Application Diagram
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
Package
MC33887DH/R2
-40
°
C to 125
°
C
20 HSOP
MC33887VW/R2
MC33887PNB/R2
36 PQFN
MC33887DWB/R2
54 SOICW-EP
MCZ33887EK/R2
DH SUFFIX
VW SUFFIX (Pb-FREE)
98ASH70273A
20-PIN HSOP
Bottom View
DWB SUFFIX
EK SUFFIX (Pb-FREE)
98ASA10506D
54-PIN SOICW-EP
PNB SUFFIX
98ASA10583D
36-PIN PQFN
33887
H-BRIDGE
33887
CCP
IN1
IN2
D1
D2
FB
EN
FS
MCU
PGND
AGND
MOTOR
OUT1
OUT2
V+
6.0 V
V+
IN
OUT
OUT
OUT
OUT
OUT
A/D
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