Document Number: MC33982
Rev. 14, 6/2008
Freescale Semiconductor
Advance Information
Single Intelligent High-current
Self-protected Silicon High Side
Switch (2.0mΩ)
33982B
The 33982B is a self-protected silicon 2.0mΩ high side switch used
to replace electromechanical relays, fuses, and discrete devices in
power management applications. The 33982B 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.
HIGH SIDE SWITCH
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 the output.
SPI programmable fault trip thresholds allow the device to be adjusted
for optimal performance in the application.
Bottom View
The 33982B is packaged in a power-enhanced 12 x 12 nonleaded
PQFN package with exposed tabs.
PNA SUFFIX
SCALE 1:1
98ARL10521D
16-PIN PQFN
Features
• Single 2.0mΩ max high side switch with parallel input or SPI
control
ORDERING INFORMATION
Temperature
• 6.0V to 27V operating voltage with standby currents < 5.0μA
• 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 over-current, open and shorted loads,
Device
Package
Range (T )
A
MC33982BPNA/R2
-40°C to 125°C
16 PQFN
over-temperature shutdown, under-voltage and over-voltage shutdown, fail-safe pin status, and program status
• Enhanced -16V reverse polarity VPWR protection
VDD
VDD
VDD
VPWR
33982B
VDD
FS
VPWR
GND
I/O
I/O
WAKE
SI
SO
SCLK
CS
SCLK
CS
MCU
HS
SO
RST
IN
SI
I/O
I/O
LOAD
CSNS
FSI
A/D
GND
GND
PWR GND
Figure 1. 33982B Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2007-2008. All rights reserved.