SIC46 microBUCK Series

SIC46 microBUCK Series

Vishay Siliconix's SiC46 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 60 V input rail to accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial. SiC46’s architecture delivers ultrafast transient response with minimum output capacitance and tight ripple regulation at very light load. The device is stable with any capacitor and no external ESR network is required for loop stability. 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 SiC46X family is available in 2 A, 4 A, 6 A, and 10 A pin compatible 5 mm by 5 mm lead (Pb)-free power enhanced MLP55-27L package.

Features
  • Versatile
    • Single supply operation from 4.5 V to 60 V input voltage
    • Adjustable output voltage down to 0.8 V
    • Scalable solution 2 A (SiC464), 4 A (SiC463), 6 A (SiC462), and 10 A (SiC461)
    • Output voltage tracking and sequencing with pre-bias start up
    • ±1% output voltage accuracy at -40°C to +125°C
  • Robust and reliable
    • Output overvoltage protection
    • Output undervoltage / short circuit protection with auto retry
    • Power good flag and overtemperature protection
    • Supported by Vishay PowerCAD online design simulation
  • Highly configurable
    • Adjustable switching frequency from 100 kHz to 2 MHz
    • Adjustable soft start and adjustable current limit
    • 3 modes of operation: forced continuous conduction, power save, or ultrasonic
  • Highly efficient
    • 98% peak efficiency
    • 5 μA supply current at shutdown
    • 250 μA operating current not switching
  • Design support tool
    • PowerCAD online design simulation
Applications
  • POLs for telecom
  • Industrial and automation
  • Industrial computing
  • Consumer electronics
Manufacturer