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33982

Single Intelligent High-current Self-protected High Side Switch (2.0 mOhm)

Freescale Semiconductor 

Freescale Semiconductor

Technical Data

Document Number: MC33982

Rev. 17.0, 5/2012

Single Intelligent High-current

Self-protected High Side

Switch (2.0 mOhm)

33982

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 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 mm

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 VPWR protection

HIGH SIDE SWITCH

Bottom View

S9C8FAKARSLLU1E0F5F2I1X1:D1

16-PIN PQFN

ORDERING INFORMATION

Device

(For Tape and Reel, add

an R2 Suffix)

Temperature

Range (TA)

Package

MC33982CHFK

-40°C to 125°C 16 PQFN

VDD

VDD

I/O

I/O

SO

SCLK

MCU CS

SI

I/O

I/O

A/D

VDD

VPWR

33982

VDD

VPWR

FS

WAKE

SI

SCLK

CS

HS

SO

RST

IN

CSNS

FSI

GND

GND

LOAD

GND

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., 2007-2012. All rights reserved.

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