33982 datasheet(28/36 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33982

TYPICAL APPLICATIONS

LOGIC COMMANDS AND REGISTERS

TYPICAL APPLICATIONS

Figure 12. Typical Applications

The loads must be chosen in order to guarantee the device

normal operating condition for junction temperatures from -40

to 150°C. In case of permanent short-circuit conditions, the

duration and number of activation cycles must be limited with

a dedicated MCU fault management, using the fault reporting

through the SPI. When driving DC motor or Solenoid loads

demanding multiple switching, an external recirculation

device must be used to maintain the device in its Safe

Operating Area.

Two application notes are available:

• AN3274, which proposes safe configurations of the

eXtreme Switch devices in case of application faults, and

to protect all circuitry with minimum external components.

• AN2469, which provides guidelines for Printed Circuit

Board (PCB) design and assembly.

Development effort will be required by the end users to

optimize the board design and PCB layout, in order to reach

electromagnetic compatibility standards (emission and

immunity).

A/D

MCU

I/O

SCLK

I/O

VDD

FSI

CSNS

RST

SCLK

WAKE

NC VPWR

33982

100nF

10µF

VDD

GND

VPWR

2.5µF

10nF

LOAD

RFS

10 k

VDD

Voltage

Regulator

VDD

VPWR

10k

33982 Datasheet(PDF) 28 Page - Freescale Semiconductor, Inc

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