LM217LD

Overview

The UMW LM217LD is a monolithic integrated circuit serving as an adjustable three-terminal positive voltage regulator. It supplies more than 0.1 A of load current with an output voltage adjustable over a 1.2 to 37 V range. The device employs internal current limiting, thermal shutdown, and safe area compensation. Electrical characteristics specify a reference voltage of 1.25 V typical, line regulation of 0.04 %/V typical, and ripple rejection of 66 dB at 120 Hz without external capacitance. It operates within a junction temperature range of 0 to 125 °C.

Feature Summary

• Internal thermal overload protection
• Internal short circuit current limiting
• Output transistor safe operating area compensation

Applications

• Positive adjustable voltage regulation
• Local card regulation
• On-line regulation

Procurement Notes

Verify the package type matches SOP-8 for the LM217LD variant. Confirm the ordering code corresponds to tape and reel delivery mode with a base quantity of 2500 units. Ensure application requirements align with the specified electrical limits, including the maximum input-output differential of 40 V and the operational junction temperature range of 0 to 125 °C.

Selection Notes

Select this component when an adjustable positive regulator exceeding 0.1 A is required. The SOP-8 package offers surface mount convenience. Consider the thermal resistance of 5 °C/W for heat dissipation planning. Verify that the load current remains within the 100 mA to 200 mA typical range for optimal performance specifications.

Part Context

The LM217 series comprises monolithic integrated circuits designed for positive adjustable voltage regulation. The LM217LD specifically utilizes an SOP-8 package configuration. This family eliminates the need for stocking multiple fixed regulators by allowing output voltage selection via a resistive divider network.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.