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