LP38690DTX-1.8/NOPB

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The LP38690DTX-1.8/NOPB is a fixed-output low-dropout (LDO) linear regulator manufactured by Texas Instruments, delivering a stable 1.8 V output with a maximum continuous current of 1 A. It operates within an input voltage range of 2.7 V to 10 V and features a typical dropout voltage of 450 mV at full load. The device incorporates thermal shutdown protection and maintains a low quiescent current of approximately 100 µA. Designed for surface-mount applications, it utilizes the TO-252-3 package and supports operation across an extended temperature range from -40 °C to +125 °C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Provides stable regulation with ceramic output capacitors
• Integrates thermal shutdown circuitry for overload protection
• Maintains low power consumption via minimal quiescent current draw

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Embedded systems needing clean power rails for sensitive logic components
• Industrial control modules operating in high-temperature environments

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'NOPB' confirms lead-free and RoHS compliance status against the latest manufacturer documentation. Ensure the TO-252-3 footprint matches your PCB design constraints. Confirm availability through authorized distributors as supply levels fluctuate. Cross-reference the exact part number to distinguish between tape-and-reel and tube packaging options.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 1.8 V rail is required with up to 1 A load capability. Consider the TO-252-3 package for its thermal dissipation advantages over smaller footprints. Evaluate the 450 mV dropout characteristic against your minimum input voltage requirements. Verify that the application environment remains within the specified -40 °C to +125 °C operational temperature limits.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This device belongs to the LP38690 series of ultra-low-noise LDO regulators designed for noise-sensitive analog and digital circuits. The series offers high power supply rejection ratios and stability with small ceramic capacitors. The DT suffix indicates the TO-252 surface-mount package, while the NOPB designation signifies a non-pb (lead-free) product variant compliant with environmental standards.