TNY286DG is an energy-saving off-line switching power supply chip with line compensation overload power supply in the SOP-7 package.
Product highlights:
1. Lowest system cost and enhanced flexibility
• 725V-rated MOSFETs
• Line compensation for overload power - no additional components required
• ±5% turn-on UV threshold: sense line voltage with a single external resistor
• Simple on/off control without loop compensation
• Selectable current limit by BP/M capacitor value
• Tight I2f parameter tolerance reduces system cost
• Extended on-time – extend low line regulation range/hold time to reduce input bulk capacitance
• Self-biasing: no bias winding or biasing components
• Frequency jitter reduces EMI filter cost
• Pinout simplifies PCB cooling
• SOURCE pin is electrically quiet with low EMII
2. Enhanced security and reliability features
• Accurate hysteretic thermal shutdown protection with auto-recovery without a manual reset
• Auto-restart provides <3% of maximum power under short-circuit and open-loop fault conditions
• Output overvoltage shutdown with the optional Zener diode
• Fast AC reset with optional UV external resistor
• Low component count improves reliability and supports single-sided PCB layout
• High bandwidth provides fast turn-on without overshoot and excellent transient load response
• Extended creepage distance between the drain and all other pins for improved field reliability
3. EcoSmart™ - Extremely energy efficient
• Easily meet all global energy efficiency regulations
• No load <30 mW with bias winding, <150 mW at 265 VAC without bias winding
• On/Off control provides constant efficiency at very light loads - ideal for mandatory CEC regulations and EuP standby requirements