AC-DC

Richtek Flyback PWM controller provides the innovative SmartJitter^TM technology, which effectively reduces EMI emissions when SMPS in green mode, and simultaneously eliminates jittering ripples at output. In additions, our new products are all featured with Continuous Conduction Mode(CCM) and Valley Switching multi-mode control to optimize the performance under various load condition.

With comprehensive Array of Safety features help system simplification, Richtek can help reduce external components and improves the reliability of SMPS. In the revolution of SMSP facing stringent trend toward high cost-effective performance, Richtek controllers are your best choice.

Product Line

NoResult

6P SSR PWM Selection Guide (SSR PWM Flyback Controllers in SOT-23-6 package)
Part Number	Power Saving	Operation Frequency	Control Mode	Jitter	External OTP	Peak Power	Brown-in/out
RT7739	< 75mW	65kHz/130kHz	SSR CCM/Valley	V	V	V	V
RT7738	< 75mW	65kHz/100kHz	SSR CCM/Valley	V	V	X	V
RT7737	< 75mW	65kHz/100kHz	SSR CCM	V	V	X	X
RT7736	< 75mW	65kHz/100kHz	SSR CCM	V	V	X	V
R7735	< 100mW	65kHz/100kHz	SSR CCM	V	V	X	X
R7731	< 300mW	Adjust Frequency	SSR CCM	V	X	X	X

6P PSR Selection Guide (PSR PWM Flyback Controllers in SOT-23-6 package)
Part Number	Power Saving	Operation Frequency	Control Mode	Jitter	External OTP	Peak Power	Brown-in/out
RT7713	< 75mW	65kHz/80kHz	PSR w/i CC CCM/Valley	V	V	X	V
RT7715	< 75mW	65kHz/80kHz	SSR w/i CC CCM/Valley	V	V	X	V

8P SSR Selection Guide (SSR PWM Flyback Controllers in SOP-8 package)
Part Number	Power Saving	Operation Frequency	Control Mode	HV pin	Xcap Discharge	Jitter	External OTP	Peak Power	Brown-in/out	Adaptive OVP/OCP
RT7789D	< 50mW	65kHz	SSR CCM/Valley	V	V	V	V	X	V	X
RT7786	< 50mW	85kHz	SSR CCM/Valley	V	V	V	V	X	V	V
RT7781	< 50mW	65kHz	SSR CCM	V	V	V	V	X	V	X
R7780	< 50mW	65kHz	SSR CCM	V	X	V	X	X	X	X
R7779	< 50mW	65kHz	SSR CCM	V	X	V	X	X	X	X