Datasheet

Electrical data
VIPER06
8/28
DocID022794 Rev 2
Table 7: Controller section
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Error amplifier
V
REF_FB
FB reference voltage
3.2
3.3
3.4
V
I
FB_PULL UP
Current pull-up
-1
µA
G
M
Transconductance
2
mA/V
Current setting (LIM) pin
V
LIM_LOW
Low-level clamp voltage
I
LIM
= -100 µA
0.5
V
Compensation (COMP) pin
V
COMPH
Upper saturation limit
T
J
= 25 °C
3
V
V
COMPL
Burst mode threshold
T
J
= 25 °C
1
1.1
1.2
V
V
COMPL_HYS
Burst mode hysteresis
T
J
= 25 °C
40
mV
H
COMP
∆V
COMP
/ ∆I
DRAIN
3
6
V/A
R
COMP(DYN)
Dynamic resistance
V
FB
= GND
15
kΩ
I
COMP
Source / sink current
V
FB
> 100 mV
150
µA
Max source current
V
COMP
= GND, V
FB
= GND
220
µA
Current limitation
I
Dlim
Drain current limitation
I
LIM
= -10 µA, V
COMP
= 3.3 V,
T
J
= 25 °C
0.32
0.35
0.38
A
t
SS
Soft-start time
8.5
ms
T
ON_MIN
Minimum turn-on time
450
ns
I
Dlim_bm
Burst mode current limitation
V
COMP
= V
COMPL
85
mA
Overload
t
OVL
Overload time
50
ms
t
RESTART
Restart time after fault
1
s
Oscillator section
F
OSC
Switching frequency
VIPER06Xx
27
30
33
kHz
VIPER06Lx
54
60
66
kHz
VIPER06Hx
103
115
127
kHz
F
D
Modulation depth
F
OSC
= 30 kHz
±2
kHz
F
OSC
= 60 kHz
±4
kHz
F
OSC
= 115 kHz
±8
kHz
F
M
Modulation frequency
230
Hz
D
MAX
Maximum duty cycle
70
80
%
Thermal shutdown
T
SD
Thermal shutdown temperature
150
160
°C
T
HYST
Thermal shutdown hysteresis
30
°C