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  • SC81440AQFSR

  • SC81440AQFSR

    Descriptions
    The SC81440 is a synchronous Buck converter family with
    a wide input voltage from 3V to 36V. The SC81440 regulates
    the output voltage at customized voltage by setting the
    divider resistors. It provides up to 4A of highly efficient output
    current with current mode control with fast loop response.
    The SC81440 is specifically designed for universal
    applications. The device incorporates spread spectrum,
    QFN package, symmetrical pinout to optimize the EMI
    performance. Up to 2.2MHz switching frequency could help
    avoid noise sensitive frequency.
    The SC81440 employs peak current mode control scheme.
    The switching frequency could be synchronized to an
    external clock.
    The SC81440 offers output over-voltage protection, cycleby-cycle
    peak current limit, output short circuit protection,
    and thermal shutdown protection.
    The SC81440 is available in 14-pin 4mm X 3.5mm QFN
    package.  

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商品描述

Descriptions
The SC81440 is a synchronous Buck converter family with
a wide input voltage from 3V to 36V. The SC81440 regulates
the output voltage at customized voltage by setting the
divider resistors. It provides up to 4A of highly efficient output
current with current mode control with fast loop response.
The SC81440 is specifically designed for universal
applications. The device incorporates spread spectrum,
QFN package, symmetrical pinout to optimize the EMI
performance. Up to 2.2MHz switching frequency could help
avoid noise sensitive frequency.
The SC81440 employs peak current mode control scheme.
The switching frequency could be synchronized to an
external clock.
The SC81440 offers output over-voltage protection, cycleby-cycle
peak current limit, output short circuit protection,
and thermal shutdown protection.
The SC81440 is available in 14-pin 4mm X 3.5mm QFN
package.  

Features • 3.5V to 36V start up input voltage, support 3.0V falling VIN • 2.5µA sleep mode quiescent current • 200kHz to 2200kHz adjustable frequency, synchronized to external clock • Adjustable output voltage through FB pin • Frequency spread spectrum for low EMI • Symmetric VIN pinout for low EMI • Selectable option for PFM or FPWM mode • Output OCL / SCP / OVP / TSD protection