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SF5887
The SF5887 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 SF5887 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 SF5887 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 is reduced, the IC enters "digital frequency foldback" mode to improve power conversion efficiency. When the output power is very low, the IC enters burst mode, providing excellent efficiency and no audio noise. The SF5887 integrates under-voltage lockout (UVLO), VCC over-voltage protection (OVP), output over-voltage protection (output OVP), programmable over-temperature protection (OTP), cycle-by-cycle current limit (OCP), pin float protection, overload protection (OLP), soft start, VCC clamping, gate clamping, and other functions and protections. The protection functions of the SF5887 are auto-recovery mode protections. The SF5887 is available in an SOP8 package.
Category：
- Product Description
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- Commodity name: SF5887
- 封装: SOP-8
- 品牌: Saiwei Technology
The SF5887 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 SF5887 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 SF5887 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 is reduced, the IC enters "digital frequency foldback" mode to improve power conversion efficiency. When the output power is very low, the IC enters burst mode, providing excellent efficiency and no audio noise. The SF5887 integrates under-voltage lockout (UVLO), VCC over-voltage protection (OVP), output over-voltage protection (output OVP), programmable over-temperature protection (OTP), cycle-by-cycle current limit (OCP), pin float protection, overload protection (OLP), soft start, VCC clamping, gate clamping, and other functions and protections. The protection functions of the SF5887 are auto-recovery mode protections. The SF5887 is available in an SOP8 package.
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