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Technical content
©SiFirst Technology - 1 - Confidential SiFirst_DS_6020P_V1.0 SF6020P
FEATURES
◆ Proprietary NC-Cap/PSR-IITM Control:
- ±4% CC and CV Precision
- Proprietary “Audio Noise Cancellation ” Control
- Built-in “Fast Dynamic Response” Control to Meet USB Charge Requirements
- Proprietary “Zero-Output Startup” Control
- Proprietary “Smart Output Short Protection”
- without External Compensation/Filtering Capacitor Needed
- Max. 50V Output for AC/DC LED Lighting ◆ Direct Drive of Low Cost BJT ◆ Proprietary Cable Drop Compensation ◆ Multi Mode Control ◆ Wide VDD Operating Range ◆ 11.7V UVLO Hysteresis Window ◆ Cycle-by-Cycle Current Limiting ◆ Leading Edge Blanking (LEB) ◆ Built-in Soft Start, Pin Floating Protection ◆ VDD UVLO, OVP & Clamp
APPLICATIONS
◆ Battery chargers ◆ Replaces linear transformer and RCC SMPS ◆ Small power adapter ◆ AC/DC LED lighting GENERAL DESCRIPTION SF6020P i s a high performance, highly integrated DCM (Discontinuous Conduction Mode) Primary Side Regulation (PSR) controller for offline small power converter applications. It can achieve less than ±4% CV/CC precision. SF6020P has built -in proprietary NC-Cap/PSR- IITM control for CV control, which eliminates external compensation or filtering capacitor. It has built -in cable drop compensation function, which can provide excellent CV performance. The IC uses Multi Mode Control to improve efficiency and reliability and to decrease audio noise energy @ light loadings. SF6020P integrates proprietary “ Audio Noise Cancellation” control for audio noise free operation. The IC has built -in “Fast Dynamic Response” control to meet USB Charge requirements. SF6020P also integrates proprietary “ Zero-Output Startup ” control to achieve startup when output is near zero voltage. The IC has proprietary “Smart Output Short Protection”, which can protect the system with large leakage inductance when output is short circuit. SF6020P integrates functions and protections of FB Short Protection, Under Voltage Lockout (UV LO), VDD Over Voltage Protection (VDD OVP), Soft Start, Cycle-by-cycle Current Limiting (OC P), Pin Floating Protection, VDD Clamping. SF6020P is available in SOT23-5 package. TYPICAL APPLICATION AC IN VDD CSFB BASE SF6020P DC Out GND NC-Cap/PSR-IITM (Primary Side Regulation) CV/CC Controller Sifirst Confidential
©SiFirst Technology - 2 - Confidential SiFirst_DS_6020P_V1.0 SF6020P Pin Configuration FB CS GND VDD BASE SOT23-5
Ordering Information
Part Number Top Mark Package Tape & Reel SF6020PMGT .20PYW SOT23-5 Green Yes Marking Information 20P YW Dot: Pin1 Mark YW: Year & Week Code Pin Description Pin Num Pin Name I/O Description 1 FB I System feedback pin. This control input regulates both the output voltage in CV mode and output current in CC mode based on the flyback voltage of the auxiliary winding.
2 GND P Ground
3 CS I Current sense pin. 4 BASE O Base drive for BJT. 5 VDD P IC power supply pin. Sifirst Confidential