LNK562DN-TL

LinkSwitch-LP switcher ICs cost effectively replace all unregulated isolated linear transformer based (50/60 Hz) power supplies up to 3 W output power. For worldwide operation, a single universal input design replaces multiple linear transformer based designs. The self-biased circuit achieves an extremely low no-load consumption of under 150 mW. The internal oscillator frequency is jittered to significantly reduce both quasi-peak and average EMI, minimizing filter cost.

Applications

• Chargers for cell/cordless phones, PDAs, power tools, MP3/portable audio devices, shavers etc.
• Standby and auxiliary supplies

Key features

• Lowest component count switcher
• Very tight parameter tolerances using proprietary IC trimming technology and transformer construction techniques enable Clampless™ designs – decreases component count/system cost and increases efficiency
• Meets industry standard requirements for thermal overload protection – eliminates the thermal fuse used with linear transformers or additional components in RCC designs
• Frequency jittering greatly reduces EMI – enables low cost input filter configuration
• Meets HV creepage requirements between DRAIN and all other pins, both on the PCB and at the package
• Proprietary E -Shield™ transformer eliminates Y - capacitor
• Hysteretic thermal shutdown protection – automatic recovery improves field reliability
• Universal input range allows worldwide operation
• Auto - restart reduces delivered power by >85% during short circuit and open loop fault conditions
• Simple ON/OFF control, no loop compensation needed
• High bandwidth provides fast turn on with no overshoot and excellent transient load response
• Easily meets all global energy efficiency regulations with no added components
• No - load consumption <150 mW at 265 VAC input
• ON/OFF control provides constant efficiency to very light loads – ideal for mandatory CEC regulations