TNY266PN OFF LINE SWITCHER, DIP8, 266 TYP:TN

The TNY266PN integrates 700V power MOSFETs, oscillator, high voltage switched current source, current limit circuitry, and thermal cutout into one monolithic device. Power for starting and running is derived directly from the voltage at the DRAIN pin, eliminating the need for bias winding and associated circuitry. Additionally, the TNY266PN incorporates automatic reset, line undervoltage detection and frequency jitter. Its innovative design minimizes the audio components in the simple ON / OFF control scheme to almost entirely eliminate perceptible noise with a standard taped / varnished transformer construction. The fully integrated automatic reset circuit limits output power safely during fault conditions such as short circuit or open loop, reducing the number of components and the cost of secondary feedback circuitry.

Fully integrated automatic reset for protection against short circuits and open loop faults
Integrated circuitry almost completely eliminates audible noise with a conventional varnished transformer
Programmable line undervoltage detection function that prevents connection / disconnection failures
Frequency jitter reduces EMI significantly (~ 10dB)
132kHz operation reduces transformer size
Very narrow tolerances and negligible temperature variation in key parameters
Switching solution with reduced number of components
Simple ON / OFF control, no loop compensation wanted
Without bias winding
Simple design eliminates backflow in manufacturing almost entirely

No load consumption <50mW with bias winding and <250mW without bias winding at 265VAC input
High bandwidth providing fast connection without surge
Current limit operation rejecting line frequency ripple
Integrates current limit and thermal protection to improve safety