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SI9120

Part Number SI9120
Manufacturer Vishay Siliconix
Description Universal Input Switchmode Controller
Published Apr 8, 2005
Detailed Description Si9120 Vishay Siliconix Universal Input Switchmode Controller FEATURES D 10- to 450-V Input Range D Current-Mode Contro...
Datasheet SI9120





Overview
Si9120 Vishay Siliconix Universal Input Switchmode Controller FEATURES D 10- to 450-V Input Range D Current-Mode Control D 125-mA Output Drive D Internal Start-Up Circuit D Internal Oscillator (1 MHz) D SHUTDOWN and RESET DESCRIPTION The Si9120 is a BiC/DMOS integrated circuit designed for use in low-power, high-efficiency off-line power supplies.
High-voltage DMOS inputs allow the controller to work over a wide range of input voltages (10- to 450-VDC).
Current-mode PWM control circuitry is implemented in CMOS to reduce quiescent current to less than 1.
5 mA.
A CMOS output driver provides high-speed switching for MOSFET devices with gate charge, Qg, up to 25 nC, enough to supply 30 W of out...






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