Power Integrations LNK304DN Link Switch, Off Line Switcher, 170mA 8-Pin, SOC

Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

LNK304 LinkSwitch-TN Buck Converter

The Power Integrations LNK304 LinkSwitch™-TN device family are Buck Converter ICs that provide a low component count step down solution. The LNK304 has been designed to offer a higher performing alternative when compared to linear and passive component solutions.


The LNK304 LinkSwitch buck convertor is ideal for use in appliances and timers, and for LED drivers and industrial controls.


Fully integrated auto-restart for short circuit and open loop fault protection
66 kHz operation with accurate current limit
Tight tolerances and negligible temperature variation
High breakdown voltage of 700 V
Frequency jittering dramatically reduces EMI (∼10 dB)
Built-in current limit and hysteretic thermal protection
High thermal shutdown temperature (+135 °C minimum)
Consumes typically only 50/80 mW in self-powered buck topology at 115/230 V ac input with no-load (opto feedback)
Consumes typically only 7/12 mW in flyback topology with external bias at 115/230 V ac input with no-load

Switching Voltage Regulators, Power Integrations

Attribute Value
Power Switch Type Off Line Switcher
Power Switch Topology Low Side
Switch On Resistance 44.2Ω
Number of Outputs 1
Current 170mA
Mounting Type Surface Mount
Package Type SOC
Pin Count 8
Dimensions 4.9 x 3.9 x 1.5mm
Power Switch Features Energy Efficient, Lowest Component Count
Protection Features Short Circuit
Length 4.9mm
Width 3.9mm
Height 1.5mm
Maximum Operating Temperature +150 °C
Minimum Operating Temperature -40 °C
Series LNK304
Discontinued product