SPV1040T

Overview

The SPV1040 is a low-power, low-voltage monolithic step-up DC-DC converter designed for solar energy harvesting. It features an input voltage range of 0.3 V to 5.5 V and provides a single output voltage up to 5.2 V with an output current capability of 1 A. The device integrates an embedded Maximum Power Point Tracking (MPPT) algorithm to maximize efficiency under varying environmental conditions. Key electrical parameters include a 100 kHz fixed PWM frequency, internal synchronous rectifier resistance of 140 mΩ, and power active switch resistance of 120 mΩ. Protection mechanisms include overcurrent (up to 1.8 A peak) and overtemperature (up to 155 °C) shutdown, along with input reverse polarity protection.

Feature Summary

• Integrated MPPT algorithm for maximizing harvested power from solar cells
• Built-in reverse polarity protection for input source safety
• Overcurrent and overtemperature protection with automatic PWM shutdown
• Low input voltage operation starting from 0.3 V

Applications

• Solar-powered wireless sensor nodes
• Energy harvesting systems for IoT devices
• Battery charging circuits for portable electronics
• Remote monitoring infrastructure power supplies

Procurement Notes

Verify the specific package variant when ordering, as the base part number may correspond to different tape-and-reel or tube configurations depending on the suffix. Confirm RoHS compliance status and moisture sensitivity level requirements against your manufacturing process specifications. Ensure the selected variant matches the required operating temperature range for your application environment.

Selection Notes

Select this component for applications requiring efficient energy extraction from low-voltage photovoltaic sources. The integrated MPPT functionality simplifies design by eliminating external tracking circuitry. Consider the thermal performance and packaging options when designing for high ambient temperatures or space-constrained PCB layouts. Verify that the input voltage source can reliably start above the minimum threshold.

Part Context

The SPV1040 belongs to STMicroelectronics' portfolio of photovoltaic ICs focused on energy harvesting. It complements other solutions like the SPV1050, which supports additional energy sources such as thermoelectric generators. This series targets the Internet of Things ecosystem by enabling autonomous operation for small devices, reducing reliance on primary batteries and cabling in smart lighting, home automation, and industrial control applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative solar charge controllers based on similar input voltage ranges and MPPT capabilities if substitution is required.