VNF1248F datasheet(14/79 Pages) STMICROELECTRONICS

Part #	VNF1248F

Description	High-side switch controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications

PDF	79 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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14 / 79 page

Table 19. Overcurrent protection

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VOC_THRS_RANGE

Overcurrent protection first threshold

range 32 steps programmable via SPI

VOC_THRS_0

Overcurrent protection thresholds

-12%

+12%

VOC_THRS_1

7.2

VOC_THRS_2

8.7

VOC_THRS_3

-7%

10.4

VOC_THRS_4

11.8

VOC_THRS_5

VOC_THRS_6

13.8

VOC_THRS_7

14.8

VOC_THRS_8

15.8

VOC_THRS_9

16.8

VOC_THRS_10

17.9

VOC_THRS_11

19.1

VOC_THRS_12

20.4

VOC_THRS_13

-5%

21.8

VOC_THRS_14

23.3

VOC_THRS_15

24.8

VOC_THRS_16

26.5

VOC_THRS_17

28.2

VOC_THRS_18

30.1

VOC_THRS_19

32.2

VOC_THRS_20

34.3

VOC_THRS_21

36.6

VOC_THRS_22

39.1

VOC_THRS_23

41.7

VOC_THRS_24

44.5

VOC_THRS_25

47.5

VOC_THRS_26

50.6

VOC_THRS_27

VOC_THRS_28

61.3

VOC_THRS_29

69.5

VOC_THRS_30

78.8

VOC_THRS_31

89.3

i-time_tol_t

I-t tolerance on time step (y axis)

(t-10%) - 32

(t+10%) + 32

µs

tI_SAMPLING

I2t algorithm sampling time

-10%

10%

µs

Note:

Overcurrent protection is based on the same 10-bit ADC used for hard short protection.

VNF1248F

Electrical specification

DS14109 - Rev 7

page 14/79

VNF1248F Datasheet(PDF) 14 Page - STMicroelectronics

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