super-QR/PSR^TM CV/CC Controller

FEATURES

◆   Easily Meet EPS Level 6

◆   Less than 75mW Standby Power

◆   Proprietary super-QR/PSR^TM (Quasi-Resonant & Primary Side Regulation) Control for High Efficiency and Low EMI

◆   ±5% CC and CV Precision

◆   Proprietary Cable Drop Compensation

◆   Smart Output Short Protection

◆   Cycle-by-Cycle Current Limiting

◆   Built-in Leading Edge Blanking (LEB)

◆   Pin Floating Protection

◆   Built-in Soft Start

◆   Output Over Voltage Protection

◆   VDD OVP & Clamp

◆   VDD Under Voltage Lockout (UVLO)

APPLICATIONS

◆   Battery chargers for cellular phones, cordless phones, PDA, digital cameras, etc

◆   Replaces linear transformer and RCC SMPS

◆   AC/DC LED lighting

GENERAL DESCRIPTION

SF6771S is a high performance, highly integrated QR (Quasi Resonant Mode) and Primary Side Regulation (PSR) controller for offline small power converter applications.

SF6771S has proprietary super-QR/PSR^TM control for high efficiency and low EMI. The standby power is less than 75mW @230VAC. Thus, the IC can meet EPS Level 6 energy standard easily. The IC also has built-in cable drop compensation function, which can provide excellent CV performance.

SF6771S integrates functions and protections of Under Voltage Lockout (UVLO), VDD Over Voltage Protection (VDD OVP), Soft Start, Cycle-by-cycle Current Limiting (OCP), Pin Floating Protection, Gate Clamping, VDD Clamping.

SF6771S is available in SOT23-6 package