CL1129 is an excellent performance of the primary side feedback controller, which integrates a variety of protection features. CL1129 minimize the number of system components and use SOP8 package, which makes the CL1129 better used low-cost design. CL1129 has a low current start function and current sampling LEB. Meanwhile, CL1129 with overvoltage protection function to prevent the circuit from being damaged in exceptional circumstances. Characteristics ◆ 5% or less constant precision, constant accuracy within 5%. ◆ primary side feedback eliminates opto TL431 and to reduce costs. ◆ Low start-up current: 1μA (typ) ◆ Low Quiescent Current: 300μA (typ) ◆ adjustable output constant voltage, constant current and peak current mode control power ◆ ◆ ◆ compensate for transformer inductance tolerances cable drop compensation ◆ Built frontier blanking (LEB) ◆ ◆-by-cycle current limiting voltage protection (UVLO) ◆ VDD OVP protection Applications 5W low power AC / DC off-line switching power supply is applied: ◆ phone / cordless phone charger ◆ digital camera battery charger ◆ ◆ Small Power Adapter PC / TV auxiliary power ◆ alternative uses linear power CL1129 SOP8 package