SPV1050
Overview
The SPV1050 is an ultra-low power energy harvesting PMIC designed to manage power from photovoltaic or thermoelectric sources. It features an integrated buck-boost converter that can extract energy from input voltages as low as 0.15V and provides a programmable constant current charging solution for various battery chemistries. The device ensures efficient power management for small-scale harvesters with a maximum charge current of 70mA and an output voltage range starting at 2.2V.
Why Choose This Part
The SPV1050 stands out due to its extremely low cold-start voltage of 0.15V, allowing it to begin harvesting energy in low-light or low-gradient thermal conditions. Its internal buck-boost topology provides flexibility to handle varying input voltages while providing a regulated battery charging path up to 5.3V. The 20-VFQFPN package is highly compact (3x3 mm), making it ideal for space-constrained wearable and IoT designs.
Applications
Key Specifications
Getting Started
Engineers can evaluate the device using the STEVAL-ISV020V1 or STEVAL-ISV021V1 evaluation boards which demonstrate solar and TEG harvesting respectively. When designing a custom PCB, ensure the inductor and storage capacitors are placed close to the VFQFPN-20 pins to minimize parasitic inductance and improve conversion efficiency. The datasheet provides specific resistor divider formulas to set the undervoltage, end-of-charge, and battery-full thresholds.
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