The SD6804D is a highly integrated offline power switch IC manufactured by Silan Microelectronics. It is designed for low-power AC/DC adapter and charger applications. This IC integrates a current-mode PWM controller with a power MOSFET, offering a simple and cost-effective solution for energy-efficient power supplies.

Applications:

• Mobile phone chargers
• Power adapters for portable devices
• Standby power supplies for home appliances
• LED lighting power supplies
• Small power adapters

Features:

• Integrated high-voltage power MOSFET
• Current-mode PWM control
• Low standby power consumption
• Overcurrent protection (OCP) with auto-recovery
• Overvoltage protection (OVP) with latch-off
• Overtemperature protection (OTP) with auto-recovery
• Short circuit protection (SCP) with auto-recovery
• Built-in soft start function
• Frequency jittering for improved EMI performance

Benefits:

• Cost-Effective Solution: The high integration level minimizes external components, reducing the overall cost of the power supply.
• High Efficiency: Current-mode PWM control optimizes efficiency, reducing energy consumption and heat dissipation.
• Enhanced Reliability: Comprehensive protection features ensure reliable operation and prevent damage to the power supply and connected devices.
• Low Standby Power: The SD6804D meets stringent energy efficiency standards with its low standby power consumption.
• Simplified Design: The integrated MOSFET and controller simplify the design process, reducing development time.

The SD6804D employs a quasi-resonant (QR) switching scheme to further enhance efficiency and reduce EMI. The built-in frequency jittering function reduces EMI emissions, facilitating compliance with regulatory standards. The soft-start function minimizes stress on the MOSFET during startup, improving reliability. The device is typically available in DIP-8 and SOP-8 packages.

Typical Technical Specifications:

• Operating Voltage: 85VAC to 265VAC
• Output Power: Up to 7W
• Switching Frequency: 65kHz
• Standby Power: <0.3W
• Protection: OCP, OVP, OTP, SCP
• Package: DIP-8, SOP-8