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LinkSwitch®-XT Product Family

Energy-Efficient Low Power Off-Line Switcher IC (Low Component Count, Tight Output Regulation)

LinkSwitch-XT Typical Application
Typical Applications with LinkSwitch-XT

Description:

Optimized for Lowest System Cost
  • Proprietary IC trimming and transformer construction techniques enable Clampless™ designs with LNK362 for lower system cost, component count and higher efficiency
  • Fully integrated auto-restart for short circuit and open loop protection
  • Self-biased supply – saves transformer auxiliary winding and associated bias supply components
  • Frequency jittering greatly reduces EMI
  • Meets HV creepage requirements between DRAIN and all other pins both on the PCB and at the package

Richer Feature Set than Linear/RCC

  • Accurate hysteretic thermal shutdown protection – automatic recovery improves field reliability
  • Universal input range allows worldwide operation
  • Simple ON/OFF control, no loop compensation needed
  • Eliminates bias winding – simpler, lower cost
    transformer
  • Very low component count – higher reliability and single side printed circuit board
  • Auto-restart reduces delivered power by 95% during short circuit and open loop fault conditions
  • High bandwidth provides fast turn on with no overshoot and excellent transient load response

Applications:

  • Chargers for cell/cordless phones, PDAs, digital cameras, MP3/portable audio players, and shavers
  • Supplies for appliances, industrial systems, and metering

 

 
Output power Table4
PRODUCT(3) 230 VAC ±15% 85-265 VAC
Adapter(1) Open Frame(2) Adapter(1) Open Frame(2)
LNK362P/G/D 2.8 W 2.8 W 2.6 W 2.6 W
LNK363P/G/D 5 W 7.5 W 3.7 W 4.7 W
LNK364P/G/D 5.5 W 9 W 4 W 6 W
Table 1. Notes: 1. Minimum continuous power in a typical non-ventilated enclosed adapter measured at 50 °C ambient. 2. Minimum practical continuous power in an open frame design with adequate heat sinking, measured at 50 °C ambient. 3. Packages: P: DIP-8B, G: SMD-8B, D: SO-8C. Please see Part Ordering Information. 4. See Key Application Considerations section for complete description of assumptions.

 

Data Sheet Application Note
LNK362-364
 Application Note

 

Lead (Pb)-Free Finish Options

 

Reference Design Description
RDKs include a working power supply, sample devices, unpopulated pcb, data sheet, comprehensive engineering report, PI Expert design software and other related documentation.
DAK-89
  • 6.2 V, 2 W AC-DC universal input charger (LNK362P)
  • LNK362, LNK363, and LNK364 P and G samples
  • Unpopulated prototype board
  • LNK362-364 data sheet
  • Engineering report
  • Design guide
  • PI Expert power supply design software CD-ROM

Visit the Design Examples page for additional circuits using this product family.

EcoSmart® - Energy Efficiency Technology
  • Easily meets all global energy efficiency regulations with no added components
  • Green RoomNo-load consumption <300 mW without bias winding at 265 VAC input (<50 mW with bias winding)
  • ON/OFF control provides constant efficiency to very light loads - ideal for mandatory CEC regulations

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