Document Number: MC33982

Rev. 14, 6/2008

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., 2007-2008. All rights reserved.

Single Intelligent High-current

Self-protected Silicon High Side

Switch (2.0m

Ω)

The 33982B is a self-protected silicon 2.0m

Ω 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.

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 33982B is packaged in a power-enhanced 12 x 12 nonleaded

PQFN package with exposed tabs.

Features

• Single 2.0m

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 over-current, open and shorted loads,

over-temperature shutdown, under-voltage and over-voltage shutdown, fail-safe pin status, and program status

Figure 1. 33982B Simplified Application Diagram

HIGH SIDE SWITCH

33982B

ORDERING INFORMATION

Device

Temperature

Package

MC33982BPNA/R2

-40

°C to 125°C

16 PQFN

SCALE 1:1

Bottom View

PNA SUFFIX

98ARL10521D

16-PIN PQFN

VDD

I/O

I/O

SO

SCLK

CS

SI

I/O

I/O

A/D

VPWR

FS

WAKE

SI

SCLK

CS

SO

RST

IN

CSNS

FSI

GND

HS

GND

LOAD

33982B

MCU

GND

PWR GND