Power Integrations

TNY266P  

AC DC Converters, Offline Switches

TNY266P Description

The TNY266P from Power Integrations is an obsolete but historically significant offline switcher IC designed for flyback topology applications. Housed in an 8-pin DIP package with through-hole mounting, it integrates a 700V breakdown voltage MOSFET and supports isolated outputs, making it suitable for low-power AC/DC conversion. With a switching frequency of 132kHz and a 65% duty cycle, it delivers up to 15W of power, ideal for compact, cost-sensitive designs. Its EN (enable) control feature and comprehensive fault protection (current limiting, open-loop, over-temperature, and short-circuit) enhance reliability in harsh environments.

TNY266P Features

• Integrated 700V MOSFET: Reduces external component count and simplifies design.
• 132kHz Switching Frequency: Enables smaller transformer sizes for space-constrained applications.
• Comprehensive Protection: Includes current limiting, open-loop detection, over-temperature shutdown, and short-circuit protection for robust operation.
• EN Control: Allows precise power management and standby mode functionality.
• Isolated Output: Ensures safety and compliance in offline power supplies.
• 65% Duty Cycle: Optimizes efficiency across varying load conditions.

TNY266P Applications

The TNY266P excels in low-power offline SMPS designs, including:

• Auxiliary power supplies for industrial controls and appliances.
• Consumer electronics like set-top boxes, routers, and LED drivers.
• Battery chargers requiring compact, efficient power conversion.
• Legacy systems where through-hole mounting and simplicity are prioritized over modern SMD alternatives.

Conclusion of TNY266P

While obsolete, the TNY266P remains a benchmark for low-cost, high-reliability offline power conversion. Its integrated protections, high-voltage capability, and flyback topology make it a pragmatic choice for legacy designs or replacements. Engineers valuing simplicity, isolation, and fault resilience may still find it useful in niche applications, though modern alternatives with higher efficiency (e.g., PowiGaN-based ICs) are recommended for new designs.

(Note: For current projects, verify availability or consider Power Integrations' newer product lines.)

TNY266P Documents

Download datasheets and manufacturer documentation for TNY266P

Datasheets :

TNY263-68      

PCN Design/Specification :

Design Chgs 29/Jul/2016