The RT7740GAD/GHD is an enhanced high-efficiency multi-mode PWM flyback controller, incorporating Richtek's proprietary SmartJitterTM technology. The innovative SmartJitterTM technology is used to reduce EMI emissions of a switch-mode power supply in green mode, and at the same time eliminate the output ripple due to frequency jittering. In operation, the RT7740GAD/GHD features a multi-mode control scheme, operating from the continuous-conduction mode (CCM) to the discontinuous-conduction mode (DCM) with valley switching, to achieve high efficiency and the optimal performance with high efficiency.
The RT7740GAD/GHD operates as a current-mode PWM controller for flyback converters. It contains comprehensive and programmable protection features, consisting of propagation delay compensation, output over-voltage protection (OVP), external over-temperature protection (OTP), and bulk-capacitor brown-in/brown-out protection. With above features, the RT7740GAD/GHD enables one to achieve a cost-effective and compact design for a wide-range AC-DC conversion applications. It is available in an SOT-23-6 package.
- Switching AC-DC Adapter
- NB Adapter
- TV/Monitor Standby Power
- PC Peripherals