Simplified Application Diagram

33892

HS0

HS1

GND

GND

FSI

CSNS

HS2

HS3

MCU

SCLK

LOAD 0

LOAD 1

LOAD 2

LOAD 3

SCLK

IN0

I/O

IN1

I/O

IN2

IN3

I/O

SI

SI

SO

SO

I/O

A/D

VPWR

VDD

VDD

VPWR

WAKE

I/O

I/O

VDD

VDD

VPWR

CS

CS

RST

FS

I/O

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

This document contains information on a product under development.

Motorola reserves the right to change or discontinue this product without notice.

© Motorola, Inc. 2004

Document order number: MC33892

Rev 1.0, 03/2004

33892

Preliminary Information

Quad Intelligent High-Side Switch

(Dual 10 m

Ω and Dual 35 mΩ)

The 33892 is one in a family of devices designed for low-voltage automotive

MOSFETs (two 10 m

Ω, two 35 mΩ) can control the high sides of four separate

resistive or inductive loads or serve as high-side switches for a pair of DC

motors.

Programming, control, and diagnostics are accomplished using a 16-bit SPI

interface. Additionally, each output has its own parallel input for PWM control

if desired. The 33892 allows the user to program via the SPI the fault current

trip levels and duration of acceptable lamp inrush or motor stall intervals. Such

programmability allows tight control of fault currents and can protect wiring

harnesses and circuit boards as well as loads.

The 33892 is packaged in a power-enhanced 10 x 10 nonleaded Power

QFN package with exposed tabs.

Features

•Dual 10 m

Ω and Dual 35 mΩ High-Side Switches

• Operating Voltage Range of 6.0 V to 27 V with Standby Current < 5.0

µA

• SPI Control of Overcurrent Limit, Overcurrent 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,

Overtemperature, Undervoltage and Overvoltage Shutdown, Fail-Safe

Terminal Status, and Program Status

• Analog Current Feedback with Selectable Ratio

PNC SUFFIX

CASE 1558-02

24-TERMINAL PQFN

QUAD INTELLIGENT

HIGH-SIDE SWITCH

ORDERING INFORMATION

Device

Temperature

Package

PC33892PNC/R2

-40

24 PQFN

33892 Simplified Application Diagram

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com