NCV7694
ELECTRICAL CHARACTERISTICS
(7 V < VS < 28 V, R
= 4.99 kW, R
=1.96 kW, 4 V < V < 28 V, Transistor = NVTFS5C478NL, LED = SFH 4725AS,
STRING
ETL
FRL
R1 = 100 mW, −40°C ≤ T ≤ 125°C, unless otherwise specified)
J
Characteristic
PROGRAMMING
Symbol
Conditions
Min.
Typ.
Max.
Unit
FRL resistor
operation range
R
external resistor value operation
range
0.8
−
15
kW
FRL
for R
= 1 kW => f
=100 Hz
FRL
FRL
(10 ms)
for R
= 10 kW => f
=10Hz
FRL
FRL
(100 ms)
Maximum FLASH Frequency (typ)
FRL multiplication
f
Derived from R
and K
;
−
−
−
125
Hz
max
FRL
FRL(typ)
valid for R
= 800 W
FRL
K
−
RFRL
tFRL
FRL
KFRL
+
0.1
RFRL
KFRL
1.96
tFRL
fFRL
+
+
+ 19.6 ms
0.1
1
tFRL
1
+
+
+ (51 Hz)
0.0196
K
FRL
tolerance
tol
FRL
Tolerance of Frame Rate Limit
13.0
%
Overcurrent protection R
I
Short to ground
1.3
−
−
mA
FRL
FRL_lim
Resistor detection for
R
< 750 W
FRL
Open Load protection R
I
Open Load detection
Resistor detection for
FRL
−
−
57.5
mA
FRL
FRL_open
R
> 17.5 kW
OPEN LOAD / SHORT TO GND
Open Load Detection Threshold (FB pin)
Open Load
Blanking Time
V
FLASH = High
130
10
150
22
170
35
mV
ms
OLth
t
OLBlank
Short to GND Detection Threshold
(DET pin)
V
FLASH = Low
300
5
350
10
400
15
mV
SGth
Short to GND
Blanking Time
t
ms
SGBlank
SHORT CIRCUIT
Short to V
Detection Threshold
V
SCth
FLASH = High
V
ING
1.5
V
ING
1.22
V
ING
0.9
V
STRING
STR
STR
STR
−
−
−
Short Circuit Blanking Time
t
5
10
15
ms
SCBlank
Input pull−up resistor on DET pin
R
Pull−up to V
30
120
190
kW
DETPull−up
STRING
DIAG OUTPUT
V
diagnostic activation threshold
V
V voltage
STRING
2.0
2.2
0.2
2.4
0.4
V
V
STRING
STRth
Output low level
V
Fault is present,
= 0.33 mA
−
OUTL
I
DIAG
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