viper50b STMicroelectronics, viper50b Datasheet - Page 6

• Manufacturer Part Number: viper50b
• Description: Smps Primary I.c.
• Manufacturer: STMicroelectronics

VIPER50B/BSP
Figure 5: Breakdown Voltage vs Temperature
6/20
Figure 1: V
Figure 3: Transition Time
V
I
I
I
COMPLO
DS
COMPHI
COMP
I
D
(Nor malize d)
BV
0
DS S
1.15
1.05
0.95
DD
1.1
90% V
1
0
Regulation Point
tf
10% V
20
D
10% Ipeak
Temp erature ( C)
40
D
60
V
DDreg
Gm in mA/V
80
Slope =
tr
100 120
FC00150
FC0 0 180
FC00160
t
t
V
DD
Figure 2: Undervoltage Lockout
Figure 4: Shut Down Action
Figure 6: Typical Frequency Variation
I
I
I
DDch
DD0
DD
(%)
VCOMPth
VCOMP
VOS C
-1
-2
-3
-4
-5
1
0
0
ID
20
V
V
40
Temperature ( C)
ENABLE
DDhyst
DDoff
60
tDISs u
80 100 120 140
DISABLE
V
V
FC00170
DDon
DS
Fsw = 0
ENABLE
= 70 V
FC0 019 0
FC0 00 6 0
t
t
t
V
DD