VNF1048F datasheet(45/49 Pages) STMICROELECTRONICS

45 / 49 page

Contents

Block diagram and pin description .................................................2

Electrical specification.............................................................4

2.1

Absolute maximum ratings....................................................... 4

2.2

Thermal data .................................................................. 5

2.3

Main electrical characteristics .................................................... 5

eFuse function ...................................................................14

Self-test ..........................................................................16

4.1

Current sense self-test ......................................................... 16

4.2

External FET VDS detection self-test ............................................. 17

4.3

External FET stuck-on self-test .................................................. 18

Protections .......................................................................20

5.1

Battery undervoltage shutdown .................................................. 20

5.2

Device overtemperature shutdown ............................................... 20

5.3

External MOSFET overtemperature shutdown ..................................... 20

5.4

External MOSFET desaturation shutdown......................................... 20

5.5

Hard short circuit latch-off ...................................................... 21

5.6

Current vs time latch-off ........................................................ 21

5.7

Low current bypass desaturation shutdown........................................ 21

SPI functional description ........................................................22

6.1

SPI Communication ........................................................... 22

6.2

Signal description ............................................................. 23

6.3

SPI protocol .................................................................. 23

6.4

Operating code definition ...................................................... 24

6.5

Write mode................................................................... 24

6.6

Read mode .................................................................. 25

6.7

Read and clear status command................................................. 25

6.8

SPI device information ......................................................... 26

6.9

Special commands ............................................................ 26

6.10

Global status byte ............................................................. 27

6.11

Address map ................................................................. 28

6.12

ROM memory map ............................................................ 29

6.13

Control registers .............................................................. 30

6.14

Status registers ............................................................... 32

6.15

Timeout watchdog ............................................................. 36

VNF1048F

Contents

DS13084 - Rev 8

page 45/49

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