HomedatasheetLNK306P

LNK306P Datasheet

Lowest Component Count, Energy-Efficient Off-Line Switcher IC
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Description

LinkSwitch-TN is specifically designed to replace all linear and capacitor-fed (cap dropper) non-isolated power supplies in the under 360 mA output current range at equal system cost while offering much higher performance and energy efficiency.LinkSwitch-TNdevices integrate a 700 V power MOSFET , oscillator, simple On/Off control scheme, a high voltage switched current source, frequency jittering, cycle-by-cycle current limit and thermal shutdown circuitry onto a monolithic IC. The start- up and operating power are derived directly from the voltage on the DRAIN pin, eliminating the need for a bias supply and associated circuitry in buck or flyback converters. The fully integrated auto-restart circuit in the LNK304-306 safely limits output power during fault conditions such as short-circuit or open loop, reducing component count and system-level load protection cost. A local supply provided by the IC allows use of a non-safety graded optocoupler acting as a level shifter to further enhance line and load regulation performance in buck and buck-boost converters, if required. LNK306P Features • Lowest cost and component count buck converter solution• Fully integrated auto-restart for short-circuit and open loop fault protection – saves external component costs• LNK302 uses a simplified controller without auto-restart for very low system cost• 66 kHz operation with accurate current limit – allows low cost off-the-shelf 1 mH inductor for up to 120 mA output current• Tight tolerances and negligible temperature variation• High breakdown voltage of 700 V provides excellent input surge withstand• Frequency jittering dramatically reduces EMI (~10 dB) – minimizes EMI filter cost• High thermal shutdown temperature (+135 °C minimum) LNK306P Applications • Appliances and timers• LED drivers and industrial controls
Features

Parameters

[{"Name":"Frequency Range","Value":"62kHz ~ 70kHz"},{"Name":"Voltage - Breakdown","Value":"700V"},{"Name":"Power (Watts)","Value":"12mW"},{"Name":"Operating Temperature","Value":"-40°C ~ 150°C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information

FAIRCHILD SEMICONDUCTOR

Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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