- All
- Product Management
- News
- Introduction
- Corporate Outlets
- FAQ
- Corporate Video
- Corporate Brochure
SF5533H
The SF5533H is a high-performance, high-efficiency, and highly integrated current mode PWM controller suitable for offline flyback converter applications. The OLP debounce time can be programmed according to the SF5533H. In the SF5533H, the PWM switching frequency with random playback is fixed at 100KHz and is adjusted to a narrower range. When the output power demand decreases, the IC will reduce the switching frequency according to the proprietary η-balance TM series control to improve the power conversion efficiency at light loads. When the output power is below a given value, the IC enters burst mode, and the no-load power can be reduced to below 75mW. This IC can achieve "zero OCP/OPP recovery gap" using SiFirst's proprietary control algorithm. The SF5533H also incorporates a proprietary "audio noise overcurrent protection compensation" to achieve constant power limiting and audio noise operation under heavy loads when the line input is approximately 90VAC. The SF5533H integrates undervoltage lockout (UVLO), VDD overvoltage protection (OVP), cycle-by-cycle current limit (OCP), pin float protection, overload protection (OLP), gate clamping, RT pin to ground short circuit protection, VDD clamping, leading edge blanking (LEB), soft start, and other functions and protections. The SF5533H is packaged in a SOT23-6 package.
Category：
- Product Description
-
- Commodity name: SF5533H
- 封装: SOT23-6
- 品牌: Saiwei Technology
The SF5533H is a high-performance, high-efficiency, and highly integrated current mode PWM controller suitable for offline flyback converter applications. The OLP debounce time can be programmed according to the SF5533H. In the SF5533H, the PWM switching frequency with random playback is fixed at 100KHz and is adjusted to a narrower range. When the output power demand decreases, the IC will reduce the switching frequency according to the proprietary η-balance TM series control to improve the power conversion efficiency at light loads. When the output power is below a given value, the IC enters burst mode, and the no-load power can be reduced to below 75mW. This IC can achieve "zero OCP/OPP recovery gap" using SiFirst's proprietary control algorithm. The SF5533H also incorporates a proprietary "audio noise overcurrent protection compensation" to achieve constant power limiting and audio noise operation under heavy loads when the line input is approximately 90VAC. The SF5533H integrates undervoltage lockout (UVLO), VDD overvoltage protection (OVP), cycle-by-cycle current limit (OCP), pin float protection, overload protection (OLP), gate clamping, RT pin to ground short circuit protection, VDD clamping, leading edge blanking (LEB), soft start, and other functions and protections. The SF5533H is packaged 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
