UC3848 Datasheet PDF | Unisonic Technologies

Unisonic Technologies UC3848

UC3848 is designed to provide several special enhancements to satisfy the needs, for example, Power-Saving mode for low standby power ( 5V 19 VOVP1 VSS=4.8V,VFB=3V 28 OLP threshold VFB(OLP) VCS > 0V, SS Open 4.7 4.9 5.1 Delay Time Of OLP TD-OLP CSS=0.47uF 55 62 70 OTP threshold T(THR) 120 135 150 OVP Disable threshold VSS(DEACT) VFB > 5V, VCC=22V 3.9 4.1 4.3 OLP Enable threshold VSS(ACT) VFB > 5V 5.1 5.4 5.7 CURRENT LIMITING SECTION LEB tLEB 220 Peak Current Limitation VCS VFB=4.4V 0.86 1 Threshold Voltage For IVIN=60uA VSENSE-L IVIN=60uA 0.77 DRIVER OUTPUT SECTION Output Voltage Low State...

Part No.	UC3848
Datasheet	UC3848 Download
Manufacturer	Unisonic Technologies
Description	HIGH-PERFORMANCE CONTROLLER
Buy	Stock & Price

DESCRIPTION

The UTC UC3848 is 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), Over Load 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...