RC1585T

Overview

The RC1585T is a low-dropout linear regulator from the LMS1585 series, manufactured by onsemi. It provides a fixed 1.5V output voltage with a maximum load current capability of 1A. The device operates within an input voltage range up to 20V and features a typical dropout voltage of 300mV at full load. It includes internal current limiting and thermal shutdown protection for robust operation. The component is housed in a TO-263-5 (D2PAK) surface-mount package, suitable for industrial temperature ranges from -40°C to +125°C junction temperature.

Feature Summary

• Fixed 1.5V output voltage option within the LMS1585 family
• High current delivery capability up to 1A
• Integrated short-circuit and thermal overload protection mechanisms

Applications

• Point-of-load regulation in embedded systems
• Power supply stages for microcontrollers and digital logic
• Battery-powered devices requiring stable low-voltage rails

Procurement Notes

Verify the specific suffix 'T' indicates the tape-and-reel packaging configuration as per onsemi standards. Confirm the exact part number matches the datasheet revision for the LMS1585 series. Ensure the ordering code aligns with the required package outline and temperature grade. Cross-reference the manufacturer's official catalog for any recent obsolescence notices or alternative recommendations.

Selection Notes

Select this component when a fixed 1.5V rail is required with high current demand. Compare dropout characteristics against system headroom requirements. Evaluate thermal performance based on PCB copper area and ambient conditions. Consider the TO-263-5 package for heat dissipation needs compared to smaller SOT packages.

Part Context

The RC1585T belongs to the LMS1585 series of positive linear regulators. This family offers various fixed output voltages ranging from 1.5V to 5.0V. The series is designed for applications requiring low noise and high power supply rejection ratio. It serves as a reliable solution for stabilizing voltages in noisy environments.

Replacement Considerations

Check for direct pin-compatible substitutes within the LMS1585 series offering different fixed voltages if system requirements change. Verify equivalent current and thermal ratings from other manufacturers before substitution.