SC419 - Semtech

SC419 DC-DC Converter

The SC419 is a synchronous buck power supply controller. It features a bootstrap switch in a space-saving MLPQ3 x 3mm 20-pin package. The device is highly efficient and uses minimal PCB area. It uses pseudo-fixed frequency adaptive on-time operation to provide fast transient response. The SC419 supports using standard capacitor types such as electrolytic or .

Features

 Power system
• Input voltage — 3V to 28V
• Integrated bootstrap switch
• 1% reference tolerance -40 to +85 °C
• EcoSpeedTM architecture with pseudo-fixed fre- quency adaptive on-time control
• Internal soft-start and soft-shutdown at output
• SmartDriveTM
 Logic input/output control
• Independent control EN for LDO and switcher
• Programmable VIN UVLO threshold
• Power good output
• Selectable power save mode
• Programmable ultrasonic power save mode
 Protections
• Over-voltage/under-voltage
• TC compensated RDS(ON) sensed current limit
• Thermal shutdown
• Smart power save
 Output capaci.