Κωδικός: LNK 500 P

LNK*500PN LNK500P CV/CC SWITCHER IC DIP-8B

Energy Efficient, CV or CV/CC Switcher for Very Low Cost Chargers and Adapters

 

Product Highlights

·          Cost Effective Linear/RCC Replacement

·          Lowest cost and component count, constant voltage (CV) or constant voltage/constant current (CV/CC) solution

·          Extremely simple circuit configuration

·          Up to 75% lighter power supply reduces shipping cost

·          Primary based CV/CC solution eliminates 10 to 20 secondary components for low system cost

·          Combined primary clamp, feedback, IC supply, and loop compensation functions – minimizes external components

·          Fully integrated auto-restart for short circuit and open loop fault protection – saves external component costs

·          42 kHz operation simplifies EMI filter design

 

Much Higher Performance Over Linear/RCC

·          Universal input range allows worldwide operation

·          Up to 70% reduction in power dissipation – reduces enclosure size significantly

·          CV/CC output characteristic without secondary feedback

·          System level thermal and current limit protection

·          Meets all single point failure requirements with only one additional clamp capacitor

·          Controlled current in CC region provides inherent soft-start

·          Optional opto feedback improves output voltage accuracy

 

EcoSmart™ – Extremely Energy Efficient

·          Consumes <300mW at 265VAC input with no load

·          Meets California Energy Commission (CEC), Energy Star, and EU requirements

·          No current sense resistors – maximizes efficiency

 

Applications

·          Linear transformer replacement in all ≤3 W applications

·          Chargers for cell phones, cordless phones, PDAs, digital cameras, MP3/portable audio devices, shavers, etc.

·          Home appliances, white goods and consumer electronics

·          Constant output current LED lighting applications

·          TV standby and other auxiliary supplies

 

Description

LinkSwitch™ is specifically designed to replace low power linear transformer/RCC chargers and adapters at equal or lower system cost with much higher performance and energy efficiency. LNK500 is a lower cost version of the LNK501 with a wider tolerance output CC characteristic. LinkSwitch introduces a revolutionary patented topology for the design of low power switching power supplies that rivals the simplicity and low cost of linear adapters and enables a much smaller, lighter, and attractive package when compared with the traditional “brick.” With efficiency of up to 75% and <300 mW no-load consumption, a LinkSwitch solution can save the end user enough energy over a linear design to completely pay for the full power supply cost in less than one year. LinkSwitch integrates a 700 V power MOSFET, PWM control, high voltage start-up, current limit, and thermal shutdown circuitry, onto a monolithic IC.

 

 

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