Ricoh have introduced new power management ICs to their latest product selection.
RP604 300 mA Buck-Boost DC/DC Converter for IoT applications
This product is in particular suitable in case a supply voltage is required which is somewhere in between the voltage level of a fully charged and fully discharged battery. At a certain moment the DC/DC Converter needs to switch over from Buck to Boost mode automatically. The RP604 is designed for IoT applications which are mainly in a sleep mode and wake-up periodically to perform a measurement, transmit some data and resume to sleep mode again. For such kind of applications, the current consumption in sleep mode should be kept as low as possible. The RP604 consumes only 0.3 µA and has a peak efficiency of 90% at 0.1 mA output current.
RP511 100mA Buck DC/DC converter for IoT applications
The RP511 is a VFM buck DC/DC Converters with synchronous rectification which can be powered from a coin cell to a USB port. The smallest solution requires only 8.0 mm2 PCB area including three external components. Therefore, this product is highly suitable for small wearable applications such as smartwatches, fitness trackers, RF modules, sensor devices etc. Current consumption is only 0.3 µA and peak efficiency is at 95% at 0.1 mA.
More information can be found in the links provided below: