The SD6864 is a current-mode PWM+PFM controller with a built-in high-voltage MOSFET, designed for use in switch-mode power supplies (SMPS). Manufactured by Silan Microelectronics, it integrates several features to enhance efficiency and reduce power consumption.

? Key Features

• Integrated High-Voltage MOSFET: Simplifies design and reduces component count.

• PWM+PFM Control: Combines pulse-width modulation (PWM) and pulse-frequency modulation (PFM) for efficient operation across varying load conditions.

• Low Standby Power: Enters burst mode during standby to minimize power dissipation.

• Operating Frequency: 25–67 kHz with frequency jitter to reduce electromagnetic interference (EMI).

• Peak Current Compensation: Stabilizes peak current across different input voltages.

• Adjustable Output Power: Output power can be set using an external resistor.

• Protection Features: Includes over-temperature protection, over-voltage protection, and under-voltage lockout.

  ? Applications

  • Off-line SMPS for consumer electronics

  • Battery chargers

  • LED drivers

  • Standby power supplies