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VNF1048F Datasheet(PDF) 12 Page - STMicroelectronics

No. de pieza VNF1048F
Descripción Electrónicos  High-side switch controller with intelligent fuse protection for 12 V, 24 V and 48 V automotive applications
PDF  49 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VNF1048F Datasheet(HTML) 12 Page - STMicroelectronics

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Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VNTC_THRS_14 External FET thermal shutdown
NTC input voltage thresholds
mV
37.50
VNTC_THRS_15
37.50
VNTC_DEGLITCH
External FET thermal shutdown
deglitch time
10
500
µs
VNTC_ADC_CONV
External FET thermal shutdown
ADC full range resolution
VNTC_ADC[9:0] =
min(((VSENSE_N -
VNTC)/1.2 *
1024), 1023)
0
1023
VNTC_ADC_RATE
External FET thermal shutdown
ADC sample rate
4.9
kSample/s
Note:
•
VNTC = VBG * RNTC/(RT_REF + RNTC)
•
RNTC = B57232V5103F360 (10 kΩ at 25 °C)
•
RT-REF = 10 kΩ ±1%
Figure 3. NTC bridge
RNTC
RT_REF
VBG
R
R
BIAS
+
-
VNTC
To ADC
VNTC
ISNS_N
NTC
NTC_M
GND
Table 18. Bypass switch
Symbol
Parameter
Test conditions
Min. Typ. Max. Unit
VDS_BYPASS_SAT
Bypass switch VDS saturation protection
threshold
1
2
V
IBYPASS_SAT
Bypass switch saturation current
VS - VOUT =
VDS_BYPASS_SAT
100
mA
RDS(ON)_BYPASS
Bypass switch on state resistance
4
7
10
Ω
tON_BYPOFF
Output turn-on time on bypass-sutthing off
100
µs
tBYPASS_STA_DEGLITCH
Bypass switch saturation diagnostic deglitch
filtering time
4
5
µs
VNF1048F
Electrical specification
DS13084 - Rev 8
page 12/49



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