Triple 2-A/out regulator operates at 3 MHz

The MIC23450 and MIC23451, are triple-output, synchronous buck regulators designed with the company’s HyperLight Load technology. The MIC23450 delivers 2-A/output and the MIC23451 provides 1-A/output. Both regulators operate at 3 MHz in PWM mode. Users may program each of the three outputs independently to operate from 1.0 to 3.3 V using external resistors.

The synchronous buck regulators support an input voltage range of 2.7 to 5.5 V and suit Li-ion/polymer or alkaline/NiCad/NiMH battery applications, as well as PoL dc/dc conversions. The MIC23450 is offered in a thermally-enhanced 32-pin 5 x 5-mm MLF package and the MIC23451 is offered in a 26-pin 4 x 4-mm MLF option. The regulators offer 23-µA/channel quiescent current and achieve 81% efficiency at load current of 1 mA.