6 A point-of-load regulator with wide input range
The Vishay SIC462ED-T1-GE3 is a synchronous step-down regulator from the microBUCK® family, delivering 6 A continuous output from a 4.5 V to 60 V input rail. The adjustable output from 0.8 V up to 55.2 V covers core voltages for FPGAs, ASICs, and MCUs as well as higher-voltage peripheral rails. The single positive output is configured as a buck topology with integrated synchronous rectification, eliminating the external catch diode and improving efficiency at light loads.
Switching frequency and thermal envelope
The switching frequency is programmable from 100 kHz to 2 MHz via an external resistor. At the low end, switching losses drop and efficiency peaks — useful for noise-sensitive analog rails. At 2 MHz, the inductor and output capacitor shrink, saving board area in a dense layout. The trade-off is higher FET switching loss, which must be balanced against the thermal budget. The PowerPAK® MLP55-27 package has an exposed thermal pad on the bottom; the board's copper plane and vias under the pad set the effective RthJA. A 4-layer PCB with thermal vias is typical for dissipating the 6 A output at high duty cycle.
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