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SF1152
The SF1152 is a high-precision, highly integrated DCM (Discontinuous Conduction Mode) self-powered primary-side regulation (PSR) power switch suitable for offline low-power converter applications. It integrates a power BJT to further reduce system cost. The SF1152 integrates a proprietary NC-capacitor/PSR-VTM series for CV control, eliminating the need for external compensation or filter capacitors. Built-in cable voltage drop compensation provides excellent CV performance. The IC uses multi-mode control to improve efficiency and reliability and reduce audio noise energy at light loads. The SF1152 integrates proprietary "audio noise reduction" control for audio noise-free operation. The IC features built-in "fast dynamic response" control to meet USB charging requirements. The SF1152 also integrates proprietary "zero-output start" control to enable startup when the output voltage is near zero. The IC features proprietary "intelligent output short-circuit protection" to protect systems with large leakage inductance during output short circuits. The SF1152 integrates FB short-circuit protection, undervoltage lockout (UVLO), soft start, cycle-by-cycle current limiting (OCP), pin float protection, VDD clamping, and other functions and protections. The SF1152 is available in a SOP7 package.
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- Product Description
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- Commodity name: SF1152
- 封装: SOP7
- 品牌: Saiwei Technology
The SF1152 is a high-precision, highly integrated DCM (Discontinuous Conduction Mode) self-powered primary-side regulation (PSR) power switch suitable for offline low-power converter applications. It integrates a power BJT to further reduce system cost. The SF1152 integrates a proprietary NC-capacitor/PSR-VTM series for CV control, eliminating the need for external compensation or filter capacitors. Built-in cable voltage drop compensation provides excellent CV performance. The IC uses multi-mode control to improve efficiency and reliability and reduce audio noise energy at light loads. The SF1152 integrates proprietary "audio noise reduction" control for audio noise-free operation. The IC features built-in "fast dynamic response" control to meet USB charging requirements. The SF1152 also integrates proprietary "zero-output start" control to enable startup when the output voltage is near zero. The IC features proprietary "intelligent output short-circuit protection" to protect systems with large leakage inductance during output short circuits. The SF1152 integrates FB short-circuit protection, undervoltage lockout (UVLO), soft start, cycle-by-cycle current limiting (OCP), pin float protection, VDD clamping, and other functions and protections. The SF1152 is available in a SOP7 package.
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