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
Symbol
Conditions
Min.
Typ.
Max.
Unit
GENERAL
Supply Voltage
VS_OP
VSUV
Parametric operation
VS rising
7
4.0
150
−
−
28
5.0
550
6.0
V
V
Supply Under−Voltage Lockout
Supply Under−Voltage hysteresis
Supply Current in normal condition
4.5
300
4.0
VSUVhys
I_VS
mV
mA
VS = 14 V,
FLASH = High,
I
, I
subtracted
FRL ETL
VS = 14V,
FLASH = Low,
, I subtracted
−
−
3.8
4.0
6.0
6.0
mA
mA
I
FRL ETL
Supply Current in Fault condition
I_VSerr
VS = 14 V,
FLASH = High,
Open Load condition,
FRL ETL
I
, I
subtracted
Thermal Shutdown (TSD)
Thermal Hysteresis
FB DRIVER
130
150
15
170
°C
°C
−
−
FB Regulation reference
Gate ON voltage
V
Under Voltage Lockout < VS
FB = 220 mV,
DET = 1.0 V
270
4.5
300
−
330
−
mV
V
FBref
V
GATE
Propagation Delay
t
50% criterion
−
−
−
8
15
15
4
μs
μs
μs
ON
FLASH rising – FB ON
Propagation Delay
FLASH falling – FB OFF
t
50% criterion
6.6
1.4
OFF
FLASH propagation Delay Delta
t
|(Falling time) –
(Rising Time)|
pd_delta
50% criterion
Output pull−down resistance
R
5
30
100
kW
GATE
FLASH INPUT PIN
Input High Threshold
Input Low Threshold
Input pull−down resistance
V
V
1.3
−
30
1.2
1.15
120
−
1.1
190
V
V
kW
inH
inL
R
FLASH
PROGRAMMING
R
Bias voltage
V
R
−
1.0
−
V
VETL
1.0
RETL
ETL
ETL
IETL
+
+
+ 200.4 mA
4990
ETL resistor operation range
external resistor value operation
range
0.8
−
15
kW
ETL
for R
for R
= 800 W => t = 320 ms;
ETL
ETL
ETL
= 15 kW => t
= 6 ms
ETL
Maximum T time (typ)
T
Derived from R
and K ;
ETL(typ)
−
−
−
6.0
ms
ON
ONmax
ETL
valid for R
= 15 kW
ETL
ETL multiplication
K
2.5
−
kW/s
RETL
tETL
ETL
KETL
tETL
+
RETL
KETL
4.99
+
+
+ 1.996 ms
2.5
K
ETL
tolerance
tol
ETL
Tolerance of Exposure Time Limit
13.0
%
Overcurrent protection R
I
Short to ground
1.3
−
−
mA
ETL
ETL_lim
Resistor detection for
R
< 750 W
ETL
Open Load protection R
I
Open Load detection
Resistor detection for
ETL
−
−
57.5
mA
ETL
ETL_open
R
> 17.5 kW
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