Vishay Siliconix – SiC46x family of 4.5V to 60V input Buck Regulators
The SiC46X 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 2MHz switching frequency. This regulator produces an adjustable output
voltage down to 0.8V from 4.5V to 60V input rail to accommodate a variety of applications, including computing, consumer electronics, telecom, and industrial.
SiC46X’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 2A, 4A, 6A, 10A pin compatible 5mm by 5mm lead (Pb)-free power enhanced MLP55-27L package.
FEATURES:
Versatile
- Single supply operation from 4.5V to 60V input voltage
- Adjustable output voltage down to 0.8V
- Scalable solution 2A (SiC464), 4A (SiC463), 6A (SiC462), 10A (SiC461)
- 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
- 5μA supply current at shutdown
- 250μA operating current not switching
Highly configurable
- Adjustable switching frequency from 100kHz to 2MHz
- Adjustable soft start and adjustable current limit
- 3 modes of operation, forced continuous conduction, power save or ultrasonic
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
Design support tool
- PowerCAD online design simulation (https://vishay.transim.com)
Intern: ICPWM
