VNF1248F datasheet(74/79 Pages) STMICROELECTRONICS

74 / 79 page

Contents

Block diagram and pin description .................................................3

Electrical specification.............................................................5

2.1

Absolute maximum ratings....................................................... 5

2.2

Thermal data .................................................................. 6

2.3

Main electrical characteristics .................................................... 6

eFuse function ...................................................................18

Self-test ..........................................................................20

4.1

Current sense self-test ......................................................... 20

4.2

External FET VDS detection self-test ............................................. 21

4.3

External FET stuck-on self-test .................................................. 23

VSPI pin undervoltage monitor....................................................25

DIN input management ...........................................................26

6.1

Standby state................................................................. 26

6.2

Unlocked state................................................................ 26

6.3

Locked state ................................................................. 27

6.4

Fail-safe state ................................................................ 27

6.5

DIN toggling .................................................................. 27

Bypass control management......................................................28

External LDO .....................................................................29

Capacitive charging mode–CCM ..................................................30

9.1

Control algorithm .............................................................. 34

Non-volatile memory (NVM) customer programming...............................35

10.1

NVM – Programmable default configuration ....................................... 37

10.1.1

NVM default configuration and output control mode in fail-safe..................... 38

10.1.2

NVM default configuration and RAM registers in fail-safe ......................... 38

10.1.3

NVM default configuration and RAM registers in locked .......................... 38

10.1.4

Default configuration upload to RAM......................................... 39

Protections .......................................................................40

11.1

Battery undervoltage shutdown .................................................. 40

11.2

Device overtemperature shutdown ............................................... 40

11.3

External MOSFET overtemperature shutdown ..................................... 40

11.4

External MOSFET desaturation shutdown......................................... 40

11.5

Hard short circuit latch-off ...................................................... 41

11.6

I2t vs time latch-off ............................................................ 41

VNF1248F

Contents

DS14109 - Rev 7

page 74/79

VNF1248F Datasheet(PDF) 74 Page - STMicroelectronics

VNF1248F Datasheet(HTML) 74 Page - STMicroelectronics

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