SiC437 Datasheet | Vishay

DESCRIPTION The Si C43x are synchronous buck regulators with integrated high side and low side power MOSFETs. Its power stage is capable of supplying 12 A (Si C437) and 8 A (Si C438) continuous current at up to 1 MHz switching frequency. This regulator produces an adjustable output voltage down to 0.6 V from 3 V to 28 V input rail to acmodate a variety of applications, including puting, consumer electronics, tele, and industrial. Si C437’s and Si C438’s architecture delivers ultrafast transient response with minimum output capacitance and tight ripple regulation at very light load. The device is internally pensated and is stable with any capacitor. No external ESR network is required for loop stability purposes. The device also incorporates a power saving scheme that significantly increases light load efficiency. The regulator family integrates a full protection feature set, including output overvoltage protection (OVP), cycle by cycle overcurrent protection (OCP) short circuit protection (SCP) and thermal shutdown (OTP). It also has UVLO and a user programmable soft start. The Si C437 and Si C438 are available in lead (Pb)-free power enhanced MLP-44L package in 4 mm x 4 mm dimension. APPLICATIONS - 5 V, 12 V, and 24 V input rail POLs - Desktop, notebooks, server, and industrial puting - Industrial and automation - consumer electronics FEATURES - Versatile - Operation from 3 V to 28 V input voltage - Adjustable output voltage down to 0.6 V - Scalable solution 8 A (Si C438), 12 A (Si C437), and 24 A (Si C431) - Output voltage tracking and sequencing with pre-bias start up - ± 1 % output voltage accuracy at -40 °C to +125 °C - Highly efficient - 97 % peak efficiency - 1 μA supply current at shutdown - 50 μA operating current not switching - Highly configurable - Four programmable switching frequencies available: 300 k Hz, 500 k Hz, 750 k Hz, and 1 MHz - Adjustable soft start and adjustable current limit - Three modes of operation: forced continuous conduction, power save (Si...