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  • TNY268PN IC - Power Integrations Off Line Switcher with Low Power IC

The TYN268PN integrates  a 700 V power MOSFET, oscillator, high voltage switched current source, current limit and thermal shutdown circuitry onto a monolithic device. The start-up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias winding and associated circuitry. In addition, the Tiny Switch-II devices incorporate auto-restart, line under voltage sense, and frequency jittering. An innovative design minimizes audio frequency components in the simple ON/OFF control scheme to practically eliminate audible noise with standard taped/varnished transformer construction. The fully integrated auto-restart circuit safely limits output power during fault conditions such as output short circuit or open loop, reducing component count and secondary feedback circuitry cost. An optional line sense resistor externally programs a line under voltage threshold, which eliminates power down glitches caused by the slow discharge of input storage capacitors present in applications such as standby supplies. The operating frequency of 132 kHz is jittered to significantly reduce both the quasi-peak and average EMI, minimizing filtering cost.


Fully integrated auto-restart for short circuit and open loop fault protection – saves external component costs

 Built-in circuitry practically eliminates audible noise with ordinary dip-varnished transformer

Programmable line under voltage detect feature prevents power on/off glitches – saves external components

 Frequency jittering dramatically reduces EMI (~10 dB)– minimizes EMI filter component costs

132 kHz operation reduces transformer size – allows use of EF12.6 or EE13 cores for low cost and small size

 Very tight tolerances and negligible temperature variation on key parameters eases design and lowers cost

 Lowest component count switcher solution

 Expanded scalable device family for low system cost


Symbol Parameter Min Type Max Units
VBP BYPASS Pin Voltage 5.6 5.85 6.15 V
VBPH BYPASS Pin Voltage Hysteresis 0.80 0.95 1.2 V
tLEB Leading Edge Blanking Time 170 215
TSD Thermal Shutdown Temperature 125 135 150 °C
TSHD Thermal Shutdown Hysteresis

Related Document:-

 TYN268PN IC Data Sheet

Brand/Manufacturer Generic
Country Of Origin China
Packer / Importer Address Constflick Technologies Limited, Building No 13 and 14, 3rd Floor, 2nd Main, Siddaiah Road, Bangalore, Karnataka - 560027 India.
MRP Rs. 83.78 (Inclusive of all Taxes)
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TNY268PN IC - Power Integrations Off Line Switcher with Low Power IC

  • Product Code: EC-1432
  • Availability: 2207
  • Rs.65.00
  • (Excluding 18% GST)


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