AL1663RS-13

AL1663RS-13 is an AL1663R series high-performance single-stage flyback and buck-boost controller, targeting dimmable LED lighting application. It is a primary side regulation (PSR) controller which can provide accurate constant current (CC) regulation without an optocoupler and secondary control circuitry. It is operating at BCM mode and switching at the valley which results in good EMI and efficiency. With working in constant on time, the system achieves high PF and low total harmonic distortion (THD) under universal input voltage. Typical applications include general LED lighting driver with dimming function, general purpose constant current source, LED backlighting driver and smart LED lighting.

• Primary side regulation without opto-coupler
• Valley switching for low switching loss
• Low start-up current and high PF
• Low THD and high efficiency
• Tight LED current variation range and tight output open voltage variation range
• Support both PWM dimming and analogue dimming
• Internal protections such as UVLO, OVP, OSP, OCP, TFP, OTP
• Low system cost
• 8 pin SOIC package
• Ambient temperature range from -40°C to 105°C