TNY285DG

TNY285DG - TinySwitch-4 Offline Switching IC

The TNY285DG from Power Integrations is a highly integrated offline switcher IC from the TinySwitch-4 family, designed for cost-effective, space-saving AC-DC power conversion in flyback topologies up to 8.5 watts.

Key Features & Benefits

• Integrated 725V MOSFET – Reduces component count and board space
• 8.5W output power – Ideal for low-power applications including adapters, chargers, and auxiliary supplies
• Flyback topology support – Proven, reliable design for isolated power conversion
• 124-140 kHz switching frequency – Enables compact transformer design
• Comprehensive fault protection – Current limiting, over-voltage, over-temperature, short circuit, and open-loop protection
• 67% maximum duty cycle – Optimized for efficiency and performance
• -40°C to 150°C junction temperature range – Suitable for industrial and automotive environments
• Surface mount SO-8C package – Compact 8-SOIC footprint for automated assembly

Typical Applications

• AC-DC adapters and chargers
• Auxiliary power supplies
• Standby power for appliances
• Industrial control and automation
• Smart home and IoT devices

Why Choose TNY285DG?

Power Integrations' TinySwitch-4 family delivers exceptional reliability and design simplicity. The TNY285DG integrates the high-voltage switching MOSFET, oscillator, control logic, and protection circuitry into a single IC, dramatically reducing external component count and design complexity. This translates to faster time-to-market, lower BOM costs, and improved system reliability.

All units are sourced through authorized distribution channels with full manufacturer documentation, traceability, and long lifecycle support to protect your design investment.

• TNY285DG.pdf