VNF1248F datasheet(16/79 Pages) STMICROELECTRONICS

16 / 79 page

Figure 4. NTC bridge

RNTC

RT_REF

VBG

BIAS

VNTC

To ADC

VNTC

ISNS_N

NTC

NTC_M

GND

Note:

•

VNTC (V) = VNTC_ADC [9:0] * 1.2 / 1024

•

RNTC(Ω) = VNTC

∗ RT_REF / (VBG − VNTC).

•

RNTC = B57232V5103F360 (10 kΩ at 25 °C)

•

RT_REF = 10 kΩ ±1%

•

VBG = 1.2 V

Table 21. Bypass switch

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VDS_BYPASS_SAT

Bypass switch VDS saturation

protection threshold

IBYPASS_SAT

Bypass switch saturation current

VS - VOUT = VDS_BYPASS_SAT

297

572

900

RDS(ON)_BYPASS

Bypass switch on state resistance

4.5

tON_BYPOFF

Output turn-on time on bypass-

shutting off

100

µs

tBYPASS_SAT_DEGLITCH

Bypass switch saturation

diagnostic de-glitch filtering time

Standby state

-20%

+20%

µs

Table 22. VOUT A-to-D conversion

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VOUT_ADC_CONV

VOUT ADC full range resolution(1)

1023

VOUT_ADC_RATE

VOUT ADC sample rate

4.9

kSample/s

VOUT_ACC_1V

Output voltage accuracy

1 < VOUT ≤ 2 V

-18

VOUT_ACC_2V

Output voltage accuracy

2 V < VOUT ≤ 3 V

-9

VOUT_ACC_3V

Output voltage accuracy

3 V < VOUT ≤ 12 V

-6

VOUT_ACC_12V

Output voltage accuracy

12 V < VOUT ≤ 60 V

-3

1. VOUT (mV) = VOUT_ADC [9:0] * 1.2

∗ 51 / 1024.

VNF1248F

Electrical specification

DS14109 - Rev 7

page 16/79

VNF1248F Datasheet(PDF) 16 Page - STMicroelectronics

VNF1248F Datasheet(HTML) 16 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79

Datasheet Download

Link URL