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SC81444Q

36V/4A, Automotive High Efficiency Buck Converter

SC81444QSC81444Q

SC81444Q

36V/4A, Automotive High Efficiency Buck Converter

The SC81444Q and SC81444AQ are synchronous buck converter with a wide input voltage range from 3V to 36V, providing 4A current capability options. The converter regulates the output voltage at customized voltage through setting the divider resistors. It also provides highly efficiency output current and fast loop response with current mode control. The SC81444Q and SC81444AQ are specifically designed for automotive applications. The device integrates user-optional spread spectrum and QFN package, whose symmetrical pinout to optimize the EMI performance. In order to minimize solution size, two fixed switching frequency are available to remove RT resistor. The switching frequency can also be synchronized to external clock through multiplexing EN/SYNC pin. For fixed frequency parts, a power good function is available by the PG pin. In addition, the device incorporates highly efficient PFM mode. If low output ripple is desired over full operational load range, FPWM mode option is also available. The SC81444Q and SC81444AQ employ both peak current limit and valley current limit to help protect the device from overload as well as provides short-period heavy current capability. It also provides thermal shutdown, input UVLO, output short-circuit protection to enable systematical robust operation.
SC81444Q
The SC81444Q and SC81444AQ are synchronous buck converter with a wide input voltage range from 3V to 36V, providing 4A current capability options. The converter regulates the output voltage at customized voltage through setting the divider resistors. It also provides highly efficiency output current and fast loop response with current mode control. The SC81444Q and SC81444AQ are specifically designed for automotive applications. The device integrates user-optional spread spectrum and QFN package, whose symmetrical pinout to optimize the EMI performance. In order to minimize solution size, two fixed switching frequency are available to remove RT resistor. The switching frequency can also be synchronized to external clock through multiplexing EN/SYNC pin. For fixed frequency parts, a power good function is available by the PG pin. In addition, the device incorporates highly efficient PFM mode. If low output ripple is desired over full operational load range, FPWM mode option is also available. The SC81444Q and SC81444AQ employ both peak current limit and valley current limit to help protect the device from overload as well as provides short-period heavy current capability. It also provides thermal shutdown, input UVLO, output short-circuit protection to enable systematical robust operation.
Product Details
Design / Development
Technical Documentation
Applications

Product Details

Technical Documentation

Applications

More Solutions
We offer a complete solution for smart cockpits, including buck converters, boost converters, buck-boost converters, diagnostic LDOs, and USB 2.0 charging protection converters.
2024.10.14
Learn more
Parameter NameParameter Value
VIN range3.5-36V
Abs. VIN (max)42V
VOUT range1-VIN*95%
Iout(Max)4A
MOS70mΩ/50mΩ
TopologyBuck
Fsw400kHz
Parameter NameParameter Value
Spread Spectrum√
Power Good√
Sync to Clock√
PFM√
FeaturesLow Iq, 100% duty cycle, Wettable Flank
PackageQFN-12 3x2
Parameter NameParameter Value
VIN range3.5-36V
Abs. VIN (max)42V
VOUT range1-VIN*95%
Iout(Max)4A
MOS70mΩ/50mΩ
TopologyBuck
Fsw400kHz
Spread Spectrum√
Power Good√
Sync to Clock√
PFM√
FeaturesLow Iq, 100% duty cycle, Wettable Flank
PackageQFN-12 3x2