SIC438AED-T1-GE3

The SiC43x are synchronous buck regulators with integrated high side and low side power MOSFETs. Its power stage is capable of supplying 12 A (SiC437) and 8 A (SiC438) 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 accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial. SiC437’s and SiC438’s architecture delivers ultrafast transient response with minimum output capacitance and tight ripple regulation at very light load. The device is internally compensated 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 SiC437 and SiC438 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 computing
• Industrial and automation
• consumer electronics

Key features

• Versatile
• Operation from 3 V to 28 V input voltage RoHS
• Adjustable output voltage down to 0.6 V COMPLIANT
• Scalable solution 8 A (SiC438), 12 A (SiC437), and 24 A (SiC431)
• 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 kHz, 500 kHz, 750 kHz, and 1 MHz
• Adjustable soft start and adjustable current limit
• Three modes of operation: forced continuous conduction, power save (SiC43xB, SiC43xD), or ultrasonic (SiC43xA, SiC43xC)
• Robust and reliable
• Cycle-by-cycle current limit
• Output overvoltage protection
• Output undervoltage / short circuit protection with auto retry
• Power good flag and over temperature protection