LP38841S-1.2 Equivalent & Substitute Parts

Part Overview

The LP38841S-1.2 is a linear voltage regulator IC from Texas Instruments, delivering a fixed positive output of 1.2V at 800mA in a TO-263 (DDPAK-5) surface mount package. This device is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Finding equivalent or substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this specific regulator remains in use.

Substiute Parts

LP38841S-1.2

Texas InstrumentsIn Stock: 1434LP38841S-1.2 Datasheet

Current PartRFQ

LP38841S-1.2/NOPB

Texas InstrumentsIn Stock: 1193LP38841S-1.2/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP38841S-1.2 is determined by the following critical parameters:

• Fixed output voltage of 1.2V
• Output current capability of 800mA minimum
• Maximum input voltage of 5.5V or greater
• TO-263 (DDPAK-5) package compatibility
• Surface mount configuration
• Operating temperature range of -40°C to 125°C or wider
• Presence of over-current, over-temperature, and short-circuit protection

The LP38841S-1.2/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LP38841S-1.2/NOPB is the direct substitute for the LP38841S-1.2. Both parts are electrically and mechanically identical across all specified parameters. The LP38841S-1.2/NOPB carries Active product status, ensuring continued manufacturer support and availability. Additionally, the LP38841S-1.2/NOPB meets ROHS3 compliance requirements, whereas the original LP38841S-1.2 is RoHS non-compliant. For applications requiring regulatory compliance or long-term supply chain stability, the LP38841S-1.2/NOPB is the preferred selection.

Frequently Asked Questions (FAQ)

Q: Can the LP38841S-1.2/NOPB be used as a direct replacement for the LP38841S-1.2?

A: Yes. Both parts deliver identical electrical performance and are housed in the same TO-263 (DDPAK-5) package. Pin configuration, output voltage, current rating, and thermal characteristics are equivalent.

Q: What is the difference between LP38841S-1.2 and LP38841S-1.2/NOPB?

A: The primary differences are product status and compliance certification. The LP38841S-1.2/NOPB is Active and ROHS3 compliant, while the LP38841S-1.2 is Not For New Designs and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there any package compatibility concerns when substituting these parts?

A: No. Both parts use the TO-263 (DDPAK-5) surface mount package with identical pinout and thermal characteristics. PCB layout and thermal management requirements remain unchanged.

Q: Why is the original LP38841S-1.2 marked as Not For New Designs?

A: This designation indicates the part has been superseded in Texas Instruments' product portfolio. The LP38841S-1.2/NOPB represents the current active equivalent with improved compliance status.

Q: What are the critical parameters for substitution compatibility?

A: Fixed output voltage (1.2V), output current (800mA), input voltage rating (5.5V max), package type (TO-263 DDPAK-5), and operating temperature range (-40°C to 125°C) must remain constant for functional equivalence.