NXP Semiconductors

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33982

TYPICAL APPLICATIONS

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 °C 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 is 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

I/O

SI

SO

SCLK

I/O

CS

SO

SI

FS

VDD

FSI

CSNS

RST

CS

IN

SCLK

NC

WAKE

NC VPWR

33982

100nF

10µF

VDD

VDD

GND

HS

HS

VPWR

VPWR

2.5µF

10nF

LOAD

RFS

1k

10 k

10 k

VDD

10

3

7

8

4

2

9

5

13

1

16

6

15

14

11

Voltage

Regulator

VDD

VPWR

NC

12

10k

10k

10k

10k

10k