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VNF1248F Datasheet(PDF) 13 Page - 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
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VNF1248F Datasheet(HTML) 13 Page - STMicroelectronics

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Symbol
Parameter
Test conditions Min. Typ. Max.
Unit
VDS_DEGLITCH
VDS monitor shut-off deglitch time
-20%
5
+20%
µs
VDS_DELAY
VDS monitor shut-off delay time
CGATE = 30 nF,
T = 105 °C
-
-
5
µs
VDS_BLK
VDS monitor shut-off blanking time
At high-side
external FET
startup
-10% 960 +10%
µs
VDS_ADC_CONV_RES VDS monitor ADC full-scale range solution (1)
0
-
1023
Bit
VDS_ADC_CONV
VDS monitor ADC full-scale voltage range
-0.05
-
1.87
V
VDS_ADC_RATE
VDS monitor ADC sample rate
-
0.9
-
MSample/s
1. VDS (V) = VDS_ADC [9:0] * 2.4 /1280 - 0.05
Table 18. Hard short circuit protection with integrated 10-bit ADC
Symbol
Parameter
Test conditions
Min. Typ. Max.
Unit
VHSC_THRS_RANGE
Hard short circuit protection threshold range 16
steps programmable via SPI
20
-
160
mV
VHSC_THRS_0
Hard short circuit protection thresholds
-
20
-
mV
VHSC_THRS_1
-
23
-
VHSC_THRS_2
-
26.4
-
VHSC_THRS_3
-
30.3
-
VHSC_THRS_4
-
34.8
-
VHSC_THRS_5
-
40
-
VHSC_THRS_6
-
45.9
-
VHSC_THRS_7
-
52.8
-
VHSC_THRS_8
-
60.6
-
VHSC_THRS_9
-
69.6
-
VHSC_THRS_10
-
80
-
VHSC_THRS_11
-
91.9
-
VHSC_THRS_12
-
105.6
-
VHSC_THRS_13
-
121.3
-
VHSC_THRS_14
-
139.3
-
VHSC_THRS_15
-
160
-
VHSC_THRS_ACC
Hard short circuit protection threshold accuracy
-5
-
5
%
VHSC_DELAY
Hard short circuit protection delay time
CGATE = 30 nF,
T = 105 °C
-
-
5
µs
VHSC_ADC_CONV
Hard short circuit protection ADC full range
resolution(1)
0
-
1023
-
VHSC_ADC_RATE
Hard short circuit ADC sample rate
-
0.9
-
MSample/s
1. VSENSE (mV) = VSENSE_ADC [9:0] * 160 / 1024.
VNF1248F
Electrical specification
DS14109 - Rev 7
page 13/79



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