LD1117AV25

Overview

The LD1117AV25 is a low-dropout positive voltage regulator from the STMicroelectronics LD1117A series. It provides a fixed output voltage of 2.5 V with a maximum output current capability of 1 A. The device operates within an input voltage range of up to 15 V and supports a junction temperature range from 0 °C to +125 °C. Key electrical parameters include a typical dropout voltage of 1.15 V at full load, a quiescent current of 5 mA, and a line regulation of 6 mV. The unit features internal thermal overload and short-circuit protection.

Feature Summary

• Fixed 2.5 V output voltage with high accuracy
• Capable of delivering up to 1 A output current
• Integrated thermal and current limiting protection

Applications

• Battery-powered equipment requiring efficient power management
• Post-regulators for switching power supplies
• Embedded systems requiring stable low-voltage rails

Procurement Notes

Verify the specific suffix code against the manufacturer's official documentation to confirm package type and tolerance specifications. Ensure compatibility with required thermal dissipation methods for the intended operating environment. Confirm RoHS compliance status through the latest datasheet revision before finalizing procurement orders.

Selection Notes

Select this component when a fixed 2.5 V rail is required with high current capacity. Consider the thermal resistance of the chosen package variant relative to the expected power dissipation. Verify that the input voltage remains within the specified limits while maintaining the necessary dropout margin for stable regulation under all load conditions.

Part Context

This part belongs to the LD1117A family of low-dropout regulators designed for applications requiring high efficiency and stability. The 'A' designation typically indicates improved performance characteristics compared to standard variants, such as tighter voltage tolerances and optimized thermal handling capabilities across the industrial temperature range.

Replacement Considerations

LD1117DT25TR: Surface-mount DPAK equivalent with identical 2.5 V output and 1 A rating.