SiC448 Datasheet | Vishay

DESCRIPTION The Si C448 is a wide input voltage, high efficiency synchronous buck regulator with integrated high side and low side power MOSFETs. Its power stage is capable of supplying high continuous current at a switching frequency up to 2 MHz. This regulator produces an adjustable output voltage down to 0.8 V from a 4.5 V to 45 V input rail to acmodate a variety of applications, including puting, consumer electronics, tele, and industrial. The Si C448’s architecture allows for ultrafast transient response with minimum output capacitance and tight ripple regulation at very light load. The device enables loop stability regardless of the type of output capacitor used, including low ESR ceramic capacitors. The device also incorporates a power saving scheme that significantly increases light load efficiency. The regulator integrates a full protection feature set, including overcurrent protection (OCP), output overvoltage protection (OVP), short circuit protection (SCP), output undervoltage protection (UVP) and overtemperature protection (OTP). It also has UVLO for input rail and a user programmable soft start. The Si C448 is available in a 6 A pin patible 5 mm by 5 mm lead (Pb)-free power enhanced Power PAK® MLP55-27L package. TYPICAL APPLICATION CIRCUIT FEATURES - Versatile - Single supply operation from 4.5 V to 45 V input voltage - Adjustable output voltage down to 0.8 V - Scalable solution available: Si C46x / Si C47x series - Output voltage tracking and sequencing with pre-bias start up - ± 1 % output voltage accuracy at -40 °C to +125 °C - Highly efficient - 98 % peak efficiency - 4 μA supply current at shutdown - 235 μA operating current, not switching - Highly configurable - Adjustable switching frequency from 100 k Hz to 2 MHz - Adjustable soft start and adjustable current limit - 3 modes of operation: forced continuous conduction, power save, or ultrasonic - Robust and reliable - Output overvoltage and output overcurrent protection - Rugged 60 V Trench MOSFET...