The EHM-UNIV-1 combines a state-of-the-art Power Management Integrated Circuit (PMIC) with supporting circuitry that reduces the number of required external components, and thus development cost. The signal conditioning provides direct input for DC input sources or built-in rectification circuitry for AC sources. This input conditioning and PMIC allow for energy harvesting from signals as low as 380mV.
The EHM-UNIV-1 provides two independent output voltages, a tunable regulated output voltage (VREG) and an unregulated system voltage (VSYS), proportional to the energy storage level. VREG stems from a low drop-out regulator with up to 150mA, whose output voltage can be set to nine distinct levels by a single external resistor, across the range from 1.5V to 3.6V. The system output voltage allows for an even higher output current (up to 1A), protected by a resettable fuse. This output becomes ideal for wireless devices that require higher surges in current when transmitting or receiving, such as Wi-fi® or cellular.