viper20b STMicroelectronics, viper20b Datasheet - Page 4

• Manufacturer Part Number: viper20b
• Description: Smps Primary I.c.
• Manufacturer: STMicroelectronics

VIPer20B / VIPer20BSP
ELECTRICAL CHARACTERISTICS (T
POWER SECTION
(1) On Inductive Load, Clamped.
SUPPLY SECTION
OSCILLATOR SECTION
4/17
Symb ol
Symb ol
Symb ol
R
V
BV
V
V
V
V
C
I
F
F
I
I
I
I
DDhyst
DS( on)
DDch
OSCih
DDo ff
OSCi l
DSS
DD0
DD1
DD2
DDo n
OSS
SW1
SW2
t
t
DSS
f
r
Drain-Source Voltage
Off-State Drain Current V
Static Drain Source on
Resistance
Fall Time
Rise Time
Output Capacitance
Start-up Charging
Current
Operating Supply
Current
Operating Supply
Current
Operating Supply
Current
Undervoltage
Shutdown
Undervoltage Reset
Hysteresis Start-up
Oscillator Frequency
Initial Accuracy
Oscillator Frequency
Total Variation
Oscillator Peak Voltage
Oscillator Valley
Voltage
Parameter
Parameter
Parameter
I
V
I
I
I
(see fig. 3)
I
(see fig. 3)
V
V
(see fig. 2)
V
(see fig. 2)
V
V
(see fig. 2)
(see fig. 2)
(see fig. 2)
R
(see fig.7)
R
V
D
D
D
D
D
DS
COMP
DS
DD
DD
DD
DD
DD
T
T
= 10 mA
= 0.9 A
= 0.9 A
= 0.1 A
= 0.9 A
= 8.2 K
= 8.2 K
= 300 V
= 25 V
= 0 to V
= 12 V, F
= 12 V, F
= 12 V, F
= 9 to15 V
J
= 25
= 0 V
Test Cond ition s
Test Cond ition s
Test Cond ition s
o
C, V
DDon
SW
SW
SW
V
C
in
T
C
V
= 0 KHz
= 100 KHz
= 200 KHz
DD
T
T
J
V
T
i n
= 300 V (1)
J
= 125
T
=2.4 nF
COMP
=2.4 nF
J
= 0 to 100
= 300 V (1)
= 13 V, unless otherwise specified)
= 100
V
DS
= 0 V
o
C
o
= 70 V
C
o
C
Min.
Min.
Min.
400
2.4
90
80
Typ .
Typ .
Typ .
100
100
7.3
7.1
3.7
80
50
90
12
13
14
11
-2
8
3
Max.
Max.
Max.
15.7
T BD
110
120
0.6
8.7
12
Un it
Un it
Un it
KHz
KHz
mA
mA
mA
mA
mA
pF
ns
ns
V
V
V
V
V
V