深圳市千家旺科技发展有限公司
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LR645N8-G 稳压芯片进口原装现货!

    LR645N8-G 深圳市千家旺科技供应全新原装进口,假一罚十!

    如有需要,请联系:

    周生生:0755-23943007,13049813856

    QQ:1437948129,511410890

    Features

    Accepts inputs from 15V to 450V

    Output currents up to 3.0mA continuous, 30mA peak

    Supply current typICally 50μA

    Line regulation typically 0.1mV/V

    Output can be trimmed from 8.0V to 12V

    Output current can be increased to 150mA with

    external FET

    Applications

    Off-line SMPS startup circuits (pulse loads)

    Low power off-line regulators

    Regulators for noisy inputs

    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,there by reducing the continuous power dissipation to a few milliwatts.

    The adjustable voltage version allows trimming of the output voltage from 8.0V to 12V. This version can also be connected to an external depletion mode MOSFET for increased output current. When used in conjunction with Supertex depletion

    mode MOSFET DN2540N5, an output current of up to 150mA is achieved.


[发布时间:2019/8/21 16:18:00]

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