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 ef?ciency in enclosed    
    adapters/chargers
  -   Allows optimum TinySwitch-III choice by swapping 
    devices with no other circuit redesign
•   Tight I
2
f 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 ?lter costs
•   Pin-out simpli?es 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 under-voltage detect threshold set using a single
optional resistor
•   Very low component count enhances reliability and
enables single-sided printed circuit board layout
•   High bandwidth provides fast turn on with no overshoot
and excellent transient load response
•   Extended creepage between DRAIN and all other pins
improves ?eld reliability.

EcoSmart
®
– Extremely Energy Ef?cient
•   Easily meets all global energy ef?ciency regulations
•   No-load <150 mW at 265 VAC without bias winding,
<50 mW with bias winding
•   ON/OFF control provides constant ef?ciency down to
very light loads – ideal for mandatory CEC regulations
and 1 W PC standby requirements