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PDF VIPER26 Data sheet ( Hoja de datos )
| Número de pieza | VIPER26 | |
| Descripción | Fixed frequency VIPer plus family | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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VIPER26
Fixed frequency VIPerTM plus family
Features
■ 800 V avalanche rugged power section
■ PWM operation with frequency jittering for low
EMI
■ Operating frequency:
– 60 kHz for L type
– 115 kHz for H type
■ Standby power < 50 mW at 265 VAC
■ Limiting current with adjustable set point
■ On-board soft-start
■ Safe auto-restart after a fault condition
■ Hysteretic thermal shutdown
Application
■ Auxiliary power supply for appliances
■ Power metering
■ LED drivers
■ SMPS for set-top boxes, DVD players and
recorders
SO16 narrow
SO-16
Description
DIP-7
The device is an off-line converter with an 800 V
avalanche ruggedness power section, a PWM
controller, user defined overcurrent limit,
protection against feedback network
disconnection, hysteretic thermal protection, soft
start up and safe auto restart after any fault
condition.
Advance frequency jittering reduces EMI filter
cost. Burst mode operation and the devices very
low consumption both help to meet the standard
set by energy saving regulations.
Figure 1. Typical topology (VOUT ≤VDDCSon)
DC Input Voltage
DC Output Voltage
-
DRAIN
COMP
VIPER26
GND VDD LIM FB
Table 1. Device summary
Order codes
VIPER26LN
VIPER26HN
VIPER26HD
VIPER26HDTR
VIPER26LD
VIPER26LDTR
September 2010
Package
DIP-7
SO16 narrow
Doc ID 17736 Rev 2
Packaging
Tube
Tube
Tape and reel
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Tape and reel
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VIPER26
4 Electrical data
Electrical data
4.1
Maximum ratings
Table 4. Absolute maximum ratings
Symbol
Pin
(DIP-7)
Parameter
VDRAIN
EAV
IAR
IDRAIN
VCOMP
VFB
VLIM
VDD
IDD
PTOT
TJ
TSTG
7, 8 Drain-to-source (ground) voltage
7, 8 Repetitive avalanche energy (limited by TJ = 150 °C)
7, 8 Repetitive avalanche current (limited by TJ = 150 °C)
7, 8 Pulse drain current (limited by TJ = 150 °C)
5 Input pin voltage
4 Input pin voltage
3 Input pin voltage
2 Supply voltage
2 Input current
Power dissipation at TA < 40 °C (DIP-7)
Power dissipation at TA < 60 °C (SO16N)
Operating junction temperature range
Storage temperature
Value
Min Max
Unit
800 V
5 mJ
1.5 A
3A
-0.3 3.5
V
-0.3 4.8
V
-0.3 2.4
V
-0.3
Self
limited
V
20 mA
1W
1.5 W
-40 150 °C
-55 150 °C
4.2
Thermal data
Table 5. Thermal data
Symbol
Parameter
Max value
SO16N DIP-7
Unit
RthJP
Thermal resistance junction pin
(Dissipated power = 1 W)
25 35 ° C/W
RthJA
RthJA
Thermal resistance junction ambient
(Dissipated power = 1 W)
Thermal resistance junction ambient (1)
(Dissipated power = 1 W)
60 100 ° C/W
50 80 ° C/W
1. When mounted on a standard single side FR4 board with 100 mm2 (0.155 sq in) of Cu (35 µm thick)
Doc ID 17736 Rev 2
5/25
5 Page 
VIPER26
Typical circuits
Figure 18. Fly-back converter (isolated)
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Figure 19. Flyback converter (primary regulation)
'2/5. $
!-V
Doc ID 17736 Rev 2
!-V
11/25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet VIPER26.PDF ] | |
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