LP38843T-0.8 Equivalent & Substitute Parts

Part Overview

The LP38843T-0.8 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 3A output current at a fixed 0.8V output voltage in a TO-220-5 package configuration. The main part number LP38843T-0.8 is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The substitute part LP38843T-0.8/NOPB maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

LP38843T-0.8

Texas InstrumentsIn Stock: 981LP38843T-0.8 Datasheet

Current PartRFQ

LP38843T-0.8/NOPB

Texas InstrumentsIn Stock: 955LP38843T-0.8/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP38843T-0.8 is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 0.8V fixed
• Maximum output current: 3A
• Maximum input voltage: 5.5V
• Voltage dropout characteristics: 0.5V @ 3A
• Package type: TO-220-5 through-hole configuration
• Electrical performance metrics: PSRR, quiescent current, protection features

The substitute part LP38843T-0.8/NOPB satisfies all substitution criteria. The primary distinction between the main part and substitute is product status (obsolete versus active) and RoHS compliance certification level. Both parts share identical electrical specifications, output characteristics, and thermal operating range.

Parameter Comparison

Engineering Selection Recommendations

The LP38843T-0.8/NOPB is the direct equivalent substitute for the obsolete LP38843T-0.8. Both parts deliver identical electrical performance and thermal characteristics. The substitute part offers two distinct advantages: active product status ensuring continued availability and supply chain support, and ROHS3 compliance certification compared to the non-compliant status of the original part. For applications requiring RoHS compliance or long-term component availability, the LP38843T-0.8/NOPB is the appropriate selection. Electrical performance and circuit compatibility remain unchanged between the two part numbers.

Frequently Asked Questions (FAQ)

Q: Can LP38843T-0.8/NOPB be used as a direct replacement for LP38843T-0.8?

A: Yes. Both parts are electrically and mechanically identical. They share the same output voltage (0.8V), output current (3A), input voltage rating (5.5V), dropout voltage (0.5V @ 3A), and TO-220-5 package configuration. The substitute part is active and RoHS3 compliant.

Q: What is the difference between LP38843T-0.8 and LP38843T-0.8/NOPB?

A: The primary differences are product status and compliance certification. LP38843T-0.8 is obsolete and RoHS non-compliant. LP38843T-0.8/NOPB is active and ROHS3 compliant. All electrical specifications and performance parameters are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the TO-220-5 through-hole package with identical pinout and mechanical dimensions. PCB layout and mounting requirements remain unchanged.

Q: Why is the original part obsolete?

A: Product obsolescence is determined by the manufacturer. The LP38843T-0.8/NOPB provides continued access to equivalent functionality with active product status and improved compliance certifications.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The electrical specifications, thermal operating range, protection features, and package configuration are identical. No circuit modifications or PCB redesign is required for substitution.

Q: What compliance certifications apply to each part?

A: LP38843T-0.8 is RoHS non-compliant and REACH unaffected. LP38843T-0.8/NOPB is ROHS3 compliant and REACH unaffected. Both parts have MSL rating of 1 (unlimited moisture sensitivity).