UC3848 Datasheet PDF - UTC

●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