TNY277G

TNY274-280 TinySwitch-III Family Energy-Efficient, Off-Line Switcher with Enhanced Flexibility and Extended Power Range Product Highlights Lowest System Cost with Enhanced Flexibility Simple ON/OFF control, no loop compensation needed Selectable current limit through BP/M capacitor value Higher current limit extends peak power or, in open frame applications, maximum continuous power Lower current limit improves efficiency in enclosed adapters/chargers Allows optimum TinySwitch-III choice by swapping devices with no other circuit redesign Tight I2f parameter tolerance reduces system cost Maximizes MOSFET and magnetics power delivery Minimizes max overload power, reducing cost of transformer, primary clamp & secondary components ON-time extension – extends low line regulation range/hold-up time to reduce input bulk capacitance Self-biased: no bias winding or bias components Frequency jittering reduces EMI filter costs Pin-out simplifies heatsinking to the PCB SOURCE pins are electrically quiet for low EMI Enhanced Safety and Reliability Features Accurate hysteretic thermal shutdown protection with automatic recovery eliminates need for manual reset Improved auto-restart delivers <3% of maximum power in short-circuit and open loop fault conditions Output overvoltage shutdown with optional Zener Line undervoltage detect threshold set using a single optional resistor Very low component count enhances reliability and enables single-sided prin...