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, cycle by-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.
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, cycle by-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.
Product Details
Design / Development
Technical Documentation
Applications
Product Details
Technical Documentation
Parameter NameParameter Value
VIN range3.5~36V
Abs. VIN (max)40V
VOUT range1-VIN
Iout(max)4A
MOSInt.
Parameter NameParameter Value
fsw200k ~ 2.2Mhz
PFM√
Constant Current ModeNA,valley current limit
FeaturesLow IQ, high EMI performance, high efficiency, Enable spread-spectrum
PackageQFN 4x3.5
Parameter NameParameter Value
VIN range3.5~36V
Abs. VIN (max)40V
VOUT range1-VIN
Iout(max)4A
MOSInt.
fsw200k ~ 2.2Mhz
PFM√
Constant Current ModeNA,valley current limit
FeaturesLow IQ, high EMI performance, high efficiency, Enable spread-spectrum