SI9120 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.
SI9120 Key Features
- 1.2 V C/L parator Clock (1/2 fOSC) R Q S
- + 4 V (1%) Ref Gen
- + 8.6 V Pre-Regulator/Start-Up +