PMIC Sets Size And Efficiency Benchmarks

The ISL91211 integrated programmable power management IC (PMIC) delivers 91% efficiency at 1.1V output voltage for application processors, GPUs, FPGAs, and system power. The device’s low RDS(on) MOSFETs and programmable PWM frequency allows designers to use fewer external components, enabling a 50-mm2 power-supply that is 40% smaller than comparable units. Its triple/quad output accommodates smartphones, tablet computers, solid-state drives, networking and wireless Internet of Things (IoT) devices powered by single-cell Lithium-ion (Li-on) batteries, or 2.5V to 5.5V power supplies. Other features include a switching frequency of 4 MHz) during load transients and a quiescent current of 62 μA while the device is regulating the output voltage. Two factory configurable options are available: the ISL91211A four-phase with three output rails configured as 2+1+1 phase, and the ISL91211B four-phase with four output rails configured as 1+1+1+1 phase. Both PMIC options are available priced at $3.90 each/1,000. For more information, visit


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