Freescale Semiconductor
Technical Data
Document Number: MC33982
Rev. 16.0, 11/2009
Single Intelligent High-current
Self-protected Silicon High Side
Switch (2.0 mΩ)
The 33982 is a self-protected silicon 2.0 mΩ high side switch used
to replace electromechanical relays, fuses, and discrete devices in
power management applications. The 33982 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 the output.
SPI programmable fault trip thresholds allow the device to be adjusted
for optimal performance in the application.
The 33982 is packaged in a power-enhanced 12 x 12 nonleaded
PQFN package with exposed tabs.
Features
• Single 2.0 mΩ max high side switch with parallel input or SPI
control
• 6.0 V to 27 V 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 over-current, open and shorted loads,
over-temperature shutdown, under-voltage and over-voltage
shutdown, fail-safe pin status, and program status
• Enhanced -16 V reverse polarity V
PWR
protection
V
DD
V
DD
V
DD
33982B/C
HIGH SIDE SWITCH
Bottom View
PNA SUFFIX
SCALE 1:1
98ARL10521D
16-PIN PQFN
ORDERING INFORMATION
Device
MC33982BPNA/R2
MC33982CPNA/R2
Temperature
Range (T
A
)
-40°C to 125°C
Package
16 PQFN
V
PWR
33982
VDD
I/O
I/O
SO
SCLK
FS
WAKE
SI
SCLK
CS
SO
RST
IN
LOAD
A/D
CSNS
FSI
GND
GND
HS
VPWR
GND
MCU
CS
SI
I/O
I/O
PWR GND
Figure 1. 33982 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., 2007-2009. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
