The KA5M0265R is a self-oscillating power switch IC specifically designed for offline flyback converters. Integrating a SenseFET and current mode PWM controller, it minimizes external components, simplifying power supply designs and reducing overall system cost.

Applications

• Power supplies for TVs
• Power supplies for VCRs
• Power supplies for DVD players
• Auxiliary power supplies for white goods

Features

• Precision Fixed Operating Frequency (67kHz)
• Low Start-up Current (Typ. 100uA)
• Built-in Soft Start Function
• Built-in Over Voltage Protection (OVP)
• Built-in Short Circuit Protection (SCP)
• Built-in Open Loop Protection (OLP)
• Built-in Thermal Shutdown Function (TSD)
• Auto-Restart Mode

Benefits

• Simplified design due to integrated SenseFET and PWM controller
• Reduced external component count leads to lower system cost
• Enhanced system reliability through built-in protection features
• Improved energy efficiency with fixed operating frequency and low start-up current
• Protection against over-voltage, short circuit, open loop, and thermal events

Additional Details

The KA5M0265R operates at a fixed frequency of 67kHz, ensuring consistent performance. Its built-in protection mechanisms, including OVP, SCP, OLP, and TSD, safeguard the power supply and connected devices. The auto-restart mode automatically recovers the system after a fault condition, minimizing downtime. It comes in a TO-220F-4L package.