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Descriptions

The LinkSwitch-II dramatically simplifies low power CV/CC charger designs by eliminating an optocoupler and secondary control circuitry. The device introduces a revolutionary control technique to provide very tight output voltage and current
regulation, compensating for transformer and internal parameter tolerances along with input voltage var

Features
  • Dramatically Simplifies CV/CC Converters
    • Eliminates optocoupler and all secondary CV/CC control circuitry
    • Eliminates all control loop compensation circuitry
  • Advanced Performance Features
    • Compensates for transformer inductance tolerances
    • Compensates for input line voltage variations
    • Compensates for cable voltage drop (LNK61X series)
    • Compensates for external component temperature variations
    • Very tight IC parameter tolerances using proprietary trimming technology
    • Frequency jittering greatly reduces EMI filter cost
    • Even tighter output tolerances achievable with external resistor selection/trimming
    • Programmable switching frequency up to 85 kHz to reduce transformer size
  • Advanced Protection/Safety Features
    • Auto-restart protection reduces power delivered by >95% for output short circuit and control loop faults (open and shorted components)
    • Hysteretic thermal shutdown – automatic recovery reduces power supply returns from the field
    • Meets high voltage creepage requirements between DRAIN and all other pins both on the PCB and at the package
  • EcoSmart® – Energy Efficient
    • Easily meets all global energy efficiency regulations
    • No-load consumption below 30 mW at 230 VAC with optional external bias winding
    • ON/OFF control provides constant efficiency down to very light loads – ideal for CEC and ENERGY STAR 2.0 regulations
    • No current sense resistors – maximizes efficiency
  • Green Package
    • Halogen free and RoHS compliant package
Applications
  • Chargers for cell/cordless phones
  • PDAs, MP3/portable audio devices
  • adapters
  • LED drivers

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