TNY274PG

AC DC Converters, Offline Switchers Overview

The TNY274PG is an integrated offline switcher from the TinySwitch-III family, designed for flyback converters. It incorporates a 700 V power MOSFET, oscillator, high voltage switched current source, and user-selectable current limit. The device operates with a switching frequency of 132 kHz and a maximum duty cycle of 65%. It supports an input voltage range of 85 to 265 VAC, delivering 8.5 W at 85-265 VAC and 11 W at 230 VAC. The output voltage is specified as 12 V. Operating parameters include a quiescent supply current of 275 uA and a drain on-resistance of 48 Ω. The component functions within a temperature range of -40 °C to +150 °C and utilizes a PDIP-8 through-hole package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700 V power MOSFET with internal control circuitry for compact design
• Features user-selectable current limit options for flexible application tuning
• Includes built-in high-voltage startup and proprietary jittering for EMI reduction

AC DC Converters, Offline Switchers Applications

• Universal AC/DC off-line converters
• Battery chargers
• General-purpose isolated power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix against official Power Integrations documentation to confirm pinout compatibility and thermal characteristics. Ensure the procurement channel provides valid traceability for the PDIP-8 package. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components. Confirm RoHS compliance status matches project requirements before finalizing orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring low standby power and high reliability in universal input environments. The integrated nature reduces external component count compared to discrete solutions. Consider the 700 V rating for standard mains voltages. Evaluate thermal management needs given the 150 °C junction temperature capability. Compare power density requirements against other TinySwitch variants if higher wattage is needed.

AC DC Converters, Offline Switchers Part Context

The TNY274PG belongs to the TinySwitch-III series by Power Integrations, which combines power MOSFETs and controllers into a single monolithic IC. This series targets cost-sensitive, high-volume consumer and industrial electronics. The TNY274 variant specifically offers moderate power levels suitable for adapters and small appliances. It represents a mature technology platform known for robust performance in isolated flyback topologies.

AC DC Converters, Offline Switchers Replacement Considerations

The TNY274DG is listed as an alias for this component. Verify pin-for-pin compatibility with any alternative switches from different manufacturers before substitution.