SIC476ED-T1-GE3

The SiC47x is a family of wide input voltage high efficiency synchronous buck regulators with integrated high side and low side power MOSFETs. Its power stage is capable of supplying high continuous current at up to 2 MHz switching frequency. This regulator produces an adjustable output voltage down to 0.8 V from 4.5 V to 55 V input rail to accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial. SiC47x'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 purpose. The device also incorporates a power saving scheme that significantly increases light load efficiency. The regulator integrates a full protection feature set, including over current protection (OCP), output overvoltage protection (OVP), short circuit protection (SCP), output undervoltage protection (UVP) and thermal shutdown (OTP). It also has UVLO for input rail and a user programmable soft start. The SiC47x family is available in 3 A, 5 A, 8 A, 12 A pin compatible 5 mm by 5 mm lead (Pb)-free power enhanced MLP55-27L package.

Applications

• Industrial and automation
• Home automation
• Industrial and server computing
• Networking, telecom, and base station power supplies
• Wall transformer regulation
• Robotics
• High end hobby electronics: remote control cars, planes, and drones
• Battery management systems
• Power tools
• Vending, ATM, and slot machines

Key features

• Versatile
• Single supply operation from 4.5 V to 55 V input voltage
• RoHS COMPLIANT
• Adjustable output voltage down to 0.8 V
• Scalable solution 3 A, 5 A, 8 A, 12 A
• Output voltage tracking and sequencing with pre-bias start up
• ± 1 % output voltage accuracy at -40 °C to +125 °C
• Internal compensation
• Highly efficient
• 98 % peak efficiency
• 4 μA supply current at shutdown
• 156 μA operating current not switching
• Highly configurable
• Adjustable switching frequency from 100 kHz to 2 MHz
• Adjustable soft start and selectable preset 100 %, 75 %, and 50 % current limit
• 2 modes of operation, forced continuous conduction or power save mode
• Robust and reliable
• Output over voltage protection
• Output under voltage / short circuit protection with auto retry
• Power good flag and over temperature protection
• Supported by Vishay PowerCAD online design simulation