Vishay has extended its microBUCK® family of synchronous buck regulators with a new device that enables the design of circuits supplying a 5A continuous output in a tiny 180mm² footprint.
The Vishay Siliconix SiP12108, which includes high and low-side power MOSFETs, is housed in a miniature 3mm x 3mm QFN-16 package. It features programmable switching frequencies of up to 4MHz, enabling the use of a very small output inductor and other supporting components.
The device has a selectable power-saving mode in which it offers efficiency of 95% across the entire load-current range. Its current-mode constant ontime regulation scheme delivers fast transient response with minimum output capacitance and tight ripple regulation over the entire load range.
The SiP12108 offers an easy migration path to devices supporting higher currents, and is also footprint-compatible with the 3A SiP12107. Since the regulator is stable with any capacitor type and does not require an ESR network for loop stability, system designs using the SiP12108 are simpler than with many comparable regulators.
Vishay’s free PowerCAD online simulation tool provides designers with a fast and convenient way to simulate and design circuits using the SiP12108.
- Point-of-load regulation
- Space-constrained end-products
- Power supplies for low-power processors,
DSPs, FPGAs and ASICs
- Input voltage range: 2.8V to 5.5V
- Output voltage range: 0.6V to 4.6V
- ±1% voltage accuracy
- Output under-voltage and over-voltage
- Thermal shut-down
- Input under-voltage lock-out
- Internal soft-start