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SF5783P
The SF5783P is a high-performance, 2-neodymium quasi-resonant (QR-II™ series) PWM controller for offline flyback power converter applications. The IC's power is supplied by a forward booster. The built-in proprietary QR-II™ series technology with advanced protection features enhances the reliability and performance of the SMPS. In the SF5783P, the "digital anti-jitter" function automatically selects and locks the valley value under a given load, achieving audio noise-free operation. The SF5783P is a multi-mode controller. At full load, the IC operates in QR mode according to 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 SF5783P integrates under-voltage lockout (UVLO), VCC over-voltage protection (OVP), output over-voltage protection (OVP), cycle-by-cycle current limit (OCP), pin float protection, overload protection (OLP), AC power-down protection, soft start, VCC clamping, gate clamping, and other functions and protections. In the SF5783P, the protection functions are auto-recovery mode protections. The SF5783P is available in a SOT23-6 package.
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- Product Description
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- Commodity name: SF5783P
- 封装: SOT23-6
- 品牌: Saiwei Technology
The SF5783P is a high-performance, 2-neodymium quasi-resonant (QR-II™ series) PWM controller for offline flyback power converter applications. The IC's power is supplied by a forward booster. The built-in proprietary QR-II™ series technology with advanced protection features enhances the reliability and performance of the SMPS. In the SF5783P, the "digital anti-jitter" function automatically selects and locks the valley value under a given load, achieving audio noise-free operation. The SF5783P is a multi-mode controller. At full load, the IC operates in QR mode according to 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 SF5783P integrates under-voltage lockout (UVLO), VCC over-voltage protection (OVP), output over-voltage protection (OVP), cycle-by-cycle current limit (OCP), pin float protection, overload protection (OLP), AC power-down protection, soft start, VCC clamping, gate clamping, and other functions and protections. In the SF5783P, the protection functions are auto-recovery mode protections. The SF5783P is available in a SOT23-6 package.
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