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MC33988 Scheda tecnica(PDF) 1 Page - Freescale Semiconductor, Inc

Il numero della parte MC33988
Spiegazioni elettronici  Dual Intelligent High-current Self-protected Silicon High Side Switch (8.0m廓)
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Produttore elettronici  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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Document Number: MC33988
Rev. 4.0, 11/2009
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., 2009. All rights reserved.
Dual Intelligent High-current
Self-protected Silicon High Side
Switch (8.0m
Ω)
The 33988 is a dual self-protected 8.0m
Ω silicon switch used to
replace electromechanical relays, fuses, and discrete devices in
power management applications. The 33988 is designed for harsh
environments, and it includes self-recovery features. The device is
suitable for loads with high inrush current, as well as motors and all
types of resistive and inductive loads.
Programming, control, and diagnostics are implemented via the
Serial Peripheral Interface (SPI). A dedicated parallel input is
available for alternate and pulse-width modulation (PWM) control of
each output. SPI-programmable fault trip thresholds allow the device
to be adjusted for optimal performance in the application.
The 33988 is packaged in a power-enhanced 12 x 12 nonleaded
PQFN package with exposed tabs.
Features
• Dual 8.0m
Ω max high side switch with parallel input or SPI control
• 6.0V to 27V operating voltage with standby currents < 5.0
μA
• Output current monitoring with two SPI-selectable current ratios
• SPI control of over-current limit, over-current fault blanking time,
output-OFF open load detection, output ON/OFF control,
watchdog timeout, slew rates, and fault status reporting
• SPI status reporting of overcurrent, open and shorted loads, over-
temperature, under-voltage and over-voltage shutdown, fail-safe
pin status, and program status
• Enhanced -16V reverse polarity VPWR protection
Figure 1. 33988 Simplified Application Diagram
HIGH SIDE SWITCH
33988
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33988CPNA
-40°C to 125°C
16 PQFN
BOTTOM VIEW
PNA SUFFIX
98ARL10521D
16-PIN PQFN
VDD
I/O
I/O
SO
SCLK
CS
SI
I/O
I/O
I/O
A/D
VPWR
FS
WAKE
SI
SCLK
CS
SO
RST
INO
IN1
CSNS
FSI
GND
HS1
HS0
GND
LOAD
LOAD
33988
MCU
VDD
VDD
VDD
VPWR


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