TNY266PN AC/DC Switching Converter 700V 350mA IC DIP-8B
TNY266PN is part of Power Integrations’ TinySwitch-II family, a monolithic off-line switching controller that combines a high-voltage power MOSFET with control circuitry in one device. It is designed to simplify compact power-supply design by keeping the switching and control functions integrated in a single chip. The result is a small, practical solution for AC/DC conversion where space and component count matter.
The device works with a simple ON/OFF control method rather than a traditional PWM loop, and it is powered directly from the DRAIN pin during operation. That approach reduces the need for extra support circuitry and helps keep the overall design straightforward. In the PDF, TNY266P is shown as a member of the family used in 10 W standby designs.
The TinySwitch-II family is presented as a low-power offline switcher aimed at cost-conscious, efficient supply designs. Its integrated architecture, compact package option, and ability to work in small adapter-style implementations make it a good fit for compact AC/DC converters. The TNY266 sits in the middle of the family, offering a balanced choice between size, power capability, and simplicity.
Features:
- Integrated 700 V power MOSFET and controller in one device.
- Simple ON/OFF control, so no loop compensation is needed.
- Auto-restart for short-circuit and open-loop fault protection.
- Frequency jitter to reduce EMI.
- Line under-voltage sense through the EN/UV pin.
- Built-in thermal shutdown protection.
- No bias winding required for normal operation.
- Low component count solution for compact power supplies.
Specifications:
| Parameter | TNY266PN value | Notes |
|---|---|---|
| Family: | TinySwitch-II | TNY263–TNY268 family. |
| Package: | DIP-8B | P package = DIP-8B. |
| Lead finish: | Pure Matte Tin (Pb-Free) | N option in ordering info. |
| Typical oscillator frequency: | 132 kHz | Average frequency shown in the control specs. |
| Max duty cycle: | 65% | From control-function table. |
| Breakdown voltage: | 700 V | Absolute maximum / breakdown spec. |
| EN/UV turnoff threshold current: | 240 µA | Control function for enable/UV pin. |
| BYPASS pin voltage: | 5.8 V regulated, 6.3 V clamp | Internal supply and clamp behavior. |
| Thermal shutdown: | 135 °C | Hysteresis is 70 °C. |
| TNY266 current limit: | 350 mA | At TJ = 25 °C, di/dt = 70 mA/µs. |
| TNY266 on-state resistance: | 14 Ω | At ID = 35 mA, TJ = 25 °C. |
| TNY266 output power: | 10 W adapter, 15 W open frame | For 230 VAC ±15%; 6 W / 9.5 W at 85–265 VAC. |
Pinout:
Applications:
- Cell-phone chargers.
- PC standby power supplies.
- TV standby power supplies.
- AC adapters.
- Motor control.
- Appliance control.
- ISDN or DSL network termination.
Package Contents:
- 1x TNY266PN AC/DC Switching Converter 700V 350mA IC DIP-8B