LP38690SDX-2.5/NOPB

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

The LP38690SDX-2.5/NOPB is a fixed positive single-output Low Dropout (LDO) linear voltage regulator manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed output voltage of 2.5 V with a maximum output current of 1 A. The device operates within an input voltage range of 2.7 V to 10 V and features a typical dropout voltage of 1.3 V at full load. It is designed for stability with ceramic output capacitors and includes internal protection against overtemperature conditions.

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

• Fixed positive single-output regulation capability
• Stable operation when used with ceramic output capacitors
• Integrated thermal shutdown protection

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

• Battery-powered systems requiring efficient linear regulation
• Portable electronics utilizing low-dropout performance
• General-purpose power management in consumer devices

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

Verify the manufacturer designation carefully, as the component was originally produced by National Semiconductor before its acquisition by Texas Instruments. Confirm that the suffix /NOPB indicates lead-free packaging compliant with RoHS standards. Ensure the specific package variant matches the design requirements, as the SDX suffix denotes a WSON-6 package. Cross-reference the part number with official Texas Instruments documentation to confirm current availability status and any potential obsolescence notices.

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

Select this component when a stable 2.5 V rail is required from a supply voltage between 2.7 V and 10 V. It is suitable for applications demanding low quiescent current and high PSRR. Verify that the thermal dissipation capabilities of the WSON-6 package are sufficient for the expected load current and ambient temperature conditions. Ensure compatibility with ceramic capacitors for optimal transient response and stability.

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

This device belongs to the LP38690 series of 1-A LDO regulators. The series is characterized by CMOS technology, offering low noise and high power supply rejection ratio. The LP38690 family is widely used in portable applications due to its small footprint and ability to drive large loads with minimal voltage drop. The specific model provides a fixed 2.5 V output, distinguishing it from adjustable or other fixed-voltage variants in the same series.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

LP38690SDX-2.5