Overview
The TNY268PN is an integrated offline switching IC manufactured by Power Integrations, part of the TinySwitch-II series. This IC combines a PWM controller and a power MOSFET in a single monolithic component, designed for high-efficiency power supply applications. It operates under a wide input voltage range, making it versatile for various low-power applications. The TNY268PN is optimized for compact designs, reducing the need for external components and simplifying circuit layout, which is particularly beneficial in space-constrained applications.
Key Specifications
| Specification | Value |
|---|---|
| Output Power (Max) - Open Frame, 230V | 23.00 W |
| Breakdown Voltage | 700 V |
| IC Package | DIP-8B |
| Mounting Type | Through Hole |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Switching Frequency | 132 kHz |
| Internal Current Limit | 500 mA |
Key Features
- Fully integrated auto-restart for short circuit and open loop fault protection, which saves external component costs.
- Programmable line under-voltage detect feature prevents power on/off glitches and reduces the need for external components.
- Frequency jittering dramatically reduces EMI (~10 dB), minimizing EMI filter component costs.
- 132 kHz operation reduces transformer size, allowing the use of EF12.6 or EE13 cores for low cost and small size.
- Built-in circuitry practically eliminates audible noise with ordinary dip-varnished transformers.
- Built-in current limit and thermal protection improves safety.
- Internal 6.4V Zener diode restricts the drain-source voltage to safe levels.
Applications
- Low power adapters/chargers for cell phones, PDAs, digital cameras, portable audio/video players, and power tools.
- Standby for PCs and TVs.
- Embedded power supplies for DVD players/recorders, set-top boxes, and home appliances.
Q & A
- What is the TNY268PN?
The TNY268PN is an integrated offline switching IC that combines a PWM controller and a power MOSFET in a single package, designed for high-efficiency power supply applications.
- What are the key applications of the TNY268PN?
The TNY268PN is used in low power adapters/chargers, standby for PCs and TVs, and embedded power supplies for various home appliances.
- What is the maximum output power of the TNY268PN?
The maximum output power of the TNY268PN is 23 W for open frame configurations at 230V input.
- What is the switching frequency of the TNY268PN?
The switching frequency of the TNY268PN is 132 kHz.
- What protection features does the TNY268PN have?
The TNY268PN includes protection features such as auto-restart for short circuit and open loop faults, over-temperature, over-current, and output short-circuit protection.
- How does the TNY268PN reduce EMI?
The TNY268PN reduces EMI through frequency jittering, which minimizes the need for EMI filter components.
- What is the operating temperature range of the TNY268PN?
The operating temperature range of the TNY268PN is from -40 °C to 150 °C.
- What type of package does the TNY268PN come in?
The TNY268PN comes in a DIP-8B package.
- Does the TNY268PN have built-in current and thermal protection?
Yes, the TNY268PN has built-in current limit and thermal protection to improve safety.
- Is the TNY268PN recommended for new designs?
No, the TNY268PN is not recommended for new designs.
