全新原装进口公司现货,假一罚万！随时可以看货
如有需要，请联系:
周生生：0755-23943007,13049813856
QQ:1437948129,511410890
The Supertex LR645 is a high input voltage, low output
current linear regulator. It has a 3-terminal fi xed output voltage
version available in TO-92, TO-220 and SOT-89 packages,
as well as an adjustable voltage version available in an 8-
lead SOIC package. The 3-terminal version functions like any
other low voltage 3-terminal regulator except it allows the use
of much higher input voltages. When used in a SMPS startup
circuit, it eliminates the need for large power resistors. In
this application, current is drawn from the high voltage line
only during start-up. Only leakage current fl ows after start-up,
thereby reducing the continuous power dissipation to a few
milliwatts.
