LP38842S-0.8 Equivalent & Substitute Parts

Part Overview

The LP38842S-0.8 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 1.5A output current at a fixed 0.8V output voltage in a TO-263 (DDPAK-5) surface mount package. The part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The substitute part maintains identical electrical specifications and mechanical compatibility while offering current availability and updated compliance status.

Substiute Parts

LP38842S-0.8

Texas InstrumentsIn Stock: 2133LP38842S-0.8 Datasheet

Current PartRFQ

LP38842S-0.8/NOPB

Texas InstrumentsIn Stock: 1248LP38842S-0.8/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP38842S-0.8 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 0.8V fixed
• Maximum output current: 1.5A
• Maximum input voltage: 5.5V
• Voltage dropout characteristics: 0.315V @ 1.5A
• Package type: TO-263 (DDPAK-5)
• Surface mount configuration
• Operating temperature range: -40°C ~ 125°C
• Protection features: Over Current, Over Temperature, Short Circuit
• Control features: Enable function

The LP38842S-0.8/NOPB is a direct equivalent manufactured by Texas Instruments with identical electrical and mechanical specifications. The primary distinction is product status and compliance certification, making it suitable for applications requiring active component availability.

Parameter Comparison

Engineering Selection Recommendations

The LP38842S-0.8/NOPB is the direct substitute for the obsolete LP38842S-0.8. Both parts are manufactured by Texas Instruments and share identical electrical performance and mechanical compatibility. The substitute part offers the advantage of active product status, ensuring continued availability for production and new designs.

The LP38842S-0.8/NOPB carries ROHS3 compliance certification, whereas the original part is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements. Both parts maintain equivalent REACH status and identical moisture sensitivity specifications.

Selection between these parts should be based on regulatory compliance requirements and component availability. For applications requiring RoHS compliance, the LP38842S-0.8/NOPB is the appropriate choice. For legacy systems or applications without RoHS constraints, either part meets the electrical and mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Are LP38842S-0.8 and LP38842S-0.8/NOPB electrically identical?

A: Yes. Both parts deliver identical electrical performance across all specified parameters including output voltage, current rating, dropout voltage, quiescent current, and protection features.

Q: Can LP38842S-0.8/NOPB be used as a direct replacement in existing designs?

A: Yes. The substitute part is mechanically and electrically compatible. Both use the TO-263 (DDPAK-5) package with identical pinout and thermal characteristics.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB designation indicates lead-free (no lead) packaging, which aligns with RoHS3 compliance requirements. This is the primary distinction between the two part numbers.

Q: Are there differences in moisture sensitivity between these parts?

A: No. Both parts carry identical MSL 3 (168 Hours) moisture sensitivity specifications.

Q: Which part should be selected for new designs?

A: The LP38842S-0.8/NOPB is recommended for new designs due to its active product status and RoHS3 compliance certification.

Q: Is the TO-263 package suitable for high-temperature applications?

A: Both parts are rated for operating temperatures from -40°C to 125°C. The TO-263 package with thermal tab provides adequate heat dissipation for the 1.5A output current within this temperature range.