VIPER26 Datasheet, PDF (1/25 Pages) STMicroelectronics – Fixed frequency VIPerTM plus family

VIPER26
Fixed frequency VIPer^TM 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 V_AC
■ 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 (V_OUT ≤V_DDCSon)
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
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