VIPER16 Fixed frequency VIPer plus family Datasheet - production data Standby power < 30 mW at 230 V AC Limiting current with adjustable set point On-board soft-start Safe auto-restart after a fault condition Hysteretic thermal shutdown ,3 62 Z R U U Application Figure 1. Typical application Replacement of capacitive power supply Auxiliary power supply for appliances, Power metering LED drivers Description 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 Features start up and safe auto restart after any fault condition. It is able to power itself directly from the 800 V avalanche rugged power section rectified mains, eliminating the need for an PWM operation with frequency jittering for low auxiliary bias winding. Advance frequency jittering EMI reduces EMI filter cost. Burst mode operation and Operating frequency: the devices very low consumption both help to meet the standard set by energy saving 60 kHz for L type regulations. 115 kHz for H type No need of auxiliary winding for low power application Table 1. Device summary Order codes Package Packaging VIPER16LN DIP-7 Tube VIPER16HN VIPER16HD Tube VIPER16HDTR Tape and reel SO16 narrow VIPER16LD Tube VIPER16LDTR Tape and reel June 2014 DocID15232 Rev 7 1/30 This is information on a product in full production. www.st.com QDContents VIPER16 Contents 1 Block diagram 4 2 Typical power . 4 3 Pin settings 5 4 Electrical data 7 4.1 Maximum ratings 7 4.2 Thermal data . 7 4.3 Electrical characteristics . 8 5 Typical electrical characteristics 11 6 Typical circuit . 14 7 Power section . 16 8 High voltage current generator . 16 9 Oscillator . 17 10 Soft start-up . 17 11 Adjustable current limit set point . 17 12 FB pin and COMP pin . 18 13 Burst mode . 19 14 Automatic auto restart after overload or short-circuit . 20 15 Open loop failure protection . 21 2/30 DocID15232 Rev 7