Datasheet

Electrical characteristics VIPer53 - E
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Table 9. Over temperature Protection Section
Table 7. PWM comparator section
Symbol Parameter Test conditions Min. Typ. Max. Unit
H
COMP
∆V
COMP
/ ∆I
DPEAK
V
COMP
= 1 ... 4 V Figure 10.
dI
D
/dt = 0 1.7 2 2.3 V/A
V
COMPos
V
COMP
Offset
dI
D
/dt = 0 Figure 10. on page 11 0.5 V
I
Dlim
Peak drain current
limitation
I
COMP
= 0mA; V
TOVL
= 0V
Figure 10.
dI
D
/dt = 0
1.7 2 2.3 A
I
Dmax
Drain current
capability
V
COMP
= V
COMPovl
; V
TOVL
= 0V
dI
D
/dt = 0 1.6 1.9 2.3 A
t
d
Current sense delay to
Turn-Off
I
D
= 1A 250 ns
V
COMPbl
V
COMP
blanking time
change threshold
Figure 6 on page 10 1V
t
b1
Blanking time V
COMP
< V
COMPBL
Figure 6. 300 400 500 ns
t
b2
Blanking time V
COMP
> V
COMPBL
Figure 6. 100 150 200 ns
t
ONmin1
Minimum On time V
COMP
< V
COMPBL
450 600 750 ns
t
ONmin2
Minimum On time V
COMP
> V
COMPBL
250 350 450 ns
V
COMPoff
V
COMP
Shutdown
Threshold
Figure 9 on page 11 0.5 V
Table 8. Overload protection section
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
COMPovl
V
COMP
overload
threshold
I
TOVL
= 0mA
(1)
Figure 4 on page 9
1. V
COMPovl
is always lower than V
COMPhi
4.35 V
V
DIFFovl
V
COMPhi
to V
COMPovl
voltage difference
V
DD
= V
DDoff
... V
DDreg
;
I
TOVL
= 0mA
Figure 4.
(1)
50 150 250 mV
V
OVLth
V
TOVL
overload
threshold
Figure 4. 4V
t
OVL
Overload delay
C
OVL
= 100nF Figure 4.
8ms
Symbol Parameter Test Conditions Min. Typ. Max. Unit
T
SD
Thermal shutdown
temperature
Figure 7 on page 10 140 160 °C
T
HYST
Thermal shutdown
hysteresis
Figure 7 on page 10 40 °C