- All
- Product Management
- News
- Introduction
- Corporate Outlets
- FAQ
- Corporate Video
- Corporate Brochure
SF5783 (Vcc_Fly-back)
The SF5783 is a high-performance, 2-neodymium quasi-resonant (QR-II™ series) PWM controller for offline flyback power converter applications. Built-in proprietary QR-II™ series technology with advanced protection features enhances the reliability and performance of the SMPS. The "digital anti-jitter" function in the SF5783 automatically selects and locks the valley value under a given load, achieving audio-noise-free operation. On the other hand, the "digital frequency jitter" function provides the system with superior EMI performance compared to traditional QR systems. The SF5783 is a multi-mode controller. At full load, the IC operates in CCM mode or QR mode depending on the AC line input. When the load becomes lighter, the IC enters "digital frequency foldback" mode to improve power conversion efficiency. When the output power is very small, the IC enters burst mode, achieving no-load power less than 75mW. The SF5783 integrates functions and protections such as undervoltage lockout (UVLO), VCC overvoltage protection (OVP), output overvoltage protection (OVP), cycle-by-cycle current limit (OCP), pin floating protection, overload protection (OLP), AC power-off protection, soft start, VCC clamping, and gate clamping. The protection functions of the SF5783 are auto-recovery mode protections. The SF5783 is available in a SOT23-6 package.
Category：
- Product Description
-
- Commodity name: SF5783 (Vcc_Fly-back)
- 封装: SOT23-6
- 品牌: Saiwei Technology
The SF5783 is a high-performance, 2-neodymium quasi-resonant (QR-II™ series) PWM controller for offline flyback power converter applications. Built-in proprietary QR-II™ series technology with advanced protection features enhances the reliability and performance of the SMPS. The "digital anti-jitter" function in the SF5783 automatically selects and locks the valley value under a given load, achieving audio-noise-free operation. On the other hand, the "digital frequency jitter" function provides the system with superior EMI performance compared to traditional QR systems. The SF5783 is a multi-mode controller. At full load, the IC operates in CCM mode or QR mode depending on the AC line input. When the load becomes lighter, the IC enters "digital frequency foldback" mode to improve power conversion efficiency. When the output power is very small, the IC enters burst mode, achieving no-load power less than 75mW. The SF5783 integrates functions and protections such as undervoltage lockout (UVLO), VCC overvoltage protection (OVP), output overvoltage protection (OVP), cycle-by-cycle current limit (OCP), pin floating protection, overload protection (OLP), AC power-off protection, soft start, VCC clamping, and gate clamping. The protection functions of the SF5783 are auto-recovery mode protections. The SF5783 is available in a SOT23-6 package.
Product Message
Please fill in the information accurately, and we will reply to you within 24 hours.
Official Account
E-mail：
Company Address：
Room 819, Dongmei Building, Xiangnan Three District, Minqiang Community, Minzhi Street, Longhua District, Shenzhen
