DESCRIPTION
●The UTC UC3848is designed to provide several special enhancements to satisfy the needs, for example, Power-Saving mode for low standby power (<0.3W), Frequency Hopping , Constant Output Power Limiting , Slope Compensation ,Over Current Protection (OCP), Over Voltage Protection (OVP), OverLoad Protection (OLP), Under Voltage Lock Out (UVLO), Short Circuit Protection (SCP) , Over Temperature Protection (OTP) etc. IC will be shutdown or can auto-restart in situations.
●FEATURES
● Low Startup Current (about 22μA)
● Fixed Switching Frequency(Norm. is 68KHz)
● Frequency Hopping for Improved EMI Performance.
● Lower than 0.3W Standby Power Design
● Linearly Decreasing Frequency to 26KHz During Light Load
● Soft Start
● Internal Slope Compensation
● Constant Power Limiting for Universal AC input Range
● Gate Output Maximum Voltage Clamp(15V)
● Max Duty Cycle 74%
● Over Temperature Protection
● Overload Protection
● Over Voltage Protection
● Leading Edge Blanking
● Cycle-by-Cycle Current Limiting
● Under Voltage Lock Out
● Short Circuit Protection
