KP1053BNon-isolated Quasi-Resonant Buck LED Power Switch
KP1053B is a highly integrated power switch with Quasi-Resonant Buck (QR-Buck) constant current (CC) control for LED lighting applications.
KP1053B combines a 500V power MOSFET switch with a power controller in one chip. The IC also integrates high voltage LDO supply circuit without VDD Cap, Current sampling circuit and a novel transformer demagnetization circuit, which eliminates transformer auxiliary winding. The IC adopts Quasi-Resonant control for high efficiency.
KP1053B integrates functions and protections of Current Limit and Leading Edge Blanking, Under Voltage Lockout (UVLO), Cycle-by-cycle Current Limiting (OCP), Thermal Foldback (OTP), LED Short Protection, etc.
l Integrated with 500V MOSFET
l Fixed Output 100mA Output Current
l Integrated HV LDO and Current Sensing
l No VDD Cap, No Current Sensing Resistor
l Single Winding Inductor Design
l Quasi-Resonant for High Efficiency
l ±4% CC Regulation
l Very Low VDD Operation Current
l Built-in AC Line CC Compensation
l Build in Protections:
n LED Short Protection
n On-Chip Thermal Fold-back (OTP)
n Cycle-by-Cycle Current Limiting
n Leading Edge Blanking (LEB)
n Pin Floating Protection
n VDD UVLO
l Available with SOP-8 and SOT33-4 Package
l LED Lighting
SOP-8, Pb free in T&R, 4000Pcs/Reel
SOT33-4, Pb free in T&R, 15000Pcs/Reel