VIPER22A-E STMicroelectronics, VIPER22A-E Datasheet - Page 14

• Manufacturer Part Number: VIPER22A-E
• Description: Fixed frequency off line converter
• Manufacturer: STMicroelectronics

Specifications of VIPER22A-E

• Constant Current Output: 350 mA, 700 mA, 1.05 A (selectable)
• Input Voltage Range: 90 to 264 VAC 50/60 Hz

Operation pictures
14/21
Figure 12. Peak drain current vs feedback current
Figure 13. Thermal shutdown
The drain current limitation is
obtained for VFB = 0 V, and a
negative current is drawn from
the FB pin. See the Application
section for further details.
I
Dpeak
I
D
1/F
OSC
I
FBsd
⋅
R
Doc ID 12050 Rev 2
FB
I
V
Dpeak
0
FB
I
Dlim
t
18V
G
ID
=
I
–
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E
FB
Δ
----------------------- -
I
Dpeak
Δ
I FB
47nF
I
FBsd
FB
VIPer22A
VDD
CONTROL
I
I
FB
FB
SOURCE
DRAIN
4mH
100V
100V