SiFirst SFL320
SFL320 is a high power factor flyback PWM controller special for LED lighting applications. The IC adopts transition mode (TM) operation for high efficiency and low EMI.FEATURES
● Built-in Soft Start● Very Low Startup Current
● Under Voltage Lockout with 7.7V Hysteresis
● VCC Over Voltage Protection (OVP)
● Clear External EA Feedback Network before Power On
● Transition Mode (TM) Operation
● Highly Linear Analog Multiplier
● Proprietary “Frequency Adjusting” for Higher PF and Low THD
● 3.3us Min. OFF Time
● 270KHz Max Frequency Clamp
● Trimmed 1.5% Internal Voltage Reference
● Restart Timer for Stand-alone
APPLICATIONS
● Cycle-by-Cycle Current Limiting● Built-in Leading Edge Blanking (LEB)
● Audio Noise Free Operation
● 10V to 32V Wide Range of VCC Voltage
● 800mA Drive Capability
APPLICATIONS
● LED Lighting Application● Single Stage High PF Flyback AC/DC SMPS
GENERAL DESCRIPTION
SFL320 wil