SI9104 Datasheet | Vishay

FEATURES - 10- to 120-V Input Range - Current-Mode Control - On-Chip 200-V, 5-Ω MOSFET Switch - SHUTDOWN and RESET - High Efficiency Operation (>80%) - Internal Start-Up Circuit - Internal Oscillator (1 MHz) DESCRIPTION The Si9104 high-voltage switchmode regulator is a monolithic Bi C/DMOS integrated circuit which contains most of the ponents necessary to implement a high-efficiency dc-todc converter up to 3 watts. It can either be operated from a low-voltage dc supply, or directly from a 10- to 120-V unregulated dc power source. This device may be used with an appropriate transformer to implement most single-ended isolated power converter topologies (i.e., flyback and forward). The Si9104 is available in a 16-pin wide-body SOIC and is specified over the D suffix (-40 to 85°C) temperature range. FUNCTIONAL BLOCK DIAGRAM Fax Back 408-970-5600, request 70002 .siliconix. S-60752- Rev. E, 05-Apr-99 1 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to -VIN (VCC < +VIN + 0.3 V) VCC - - - - - - - - - . . 15 V +VIN - - - - - - - - - . 120 V VDS - - - - - - - - - . . 200 V ID (Peak) (300 µs pulse, 2% duty cycle)- - - - . 2 A ID (rms) - - - - - - - - . .250 m A Logic Inputs (RESET, SHUTDOWN, OSC IN) . . -0.3 V to VCC + 0.3 V Linear Inputs (FEEDBACK, SOURCE) - - . . . . -0.3 V to 7 V HV Pre-Regulator Input Current (continuous) - - . . . . .3 m A Storage Temperature -...