Features

◆ Constant voltage accuracy within 5%, constant current accuracy within 5%.

◆ Primary feedback eliminates TL431 and optocoupler to reduce costs.

◆ Low startup current: 1μA (typical)

◆ Low quiescent current: 300μA (typical)

◆ Adjustable output constant voltage, constant current and power

◆ Peak current mode control

◆ Compensate for transformer inductance tolerance

◆ Compensate for cable voltage drop

◆ Built-in leading edge blanking circuit (LEB)

◆ Cycle-by-cycle current limit

◆ Undervoltage lockout (UVLO)

◆ VDD OVP protection function

Application range

5W low power AC/DC offline switching power supply

Applied in:

◆ Mobile phone/cordless phone charger

◆ Digital camera charger

◆ Low power power adapter

◆ Computer/TV auxiliary power supply

◆ Replacement of linear power supply

CL1129 adopts SOP8 package