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SI9120 Datasheet Universal Input Switchmode Controller

Manufacturer: Vishay

Overview: Si9120 Vishay Siliconix Universal Input Switchmode Controller.

General 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.

Key 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.

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