LP38841T-1.2 Equivalent & Substitute Parts

Part Overview

The LP38841T-1.2 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. It delivers 800mA output current at a fixed 1.2V output with a maximum dropout voltage of 0.21V at full load. The device integrates over-current, over-temperature, and short-circuit protection features, making it suitable for low-voltage power supply applications requiring regulated output.

The main part number LP38841T-1.2 carries an obsolete product status. Direct manufacturer equivalents with active product status are available, making substitution necessary for new designs and ongoing production requirements.

Substiute Parts

LP38841T-1.2

Texas InstrumentsIn Stock: 2112LP38841T-1.2 Datasheet

Current PartRFQ

LP38841T-1.2/NOPB

Texas InstrumentsIn Stock: 1371LP38841T-1.2/NOPB Datasheet

DirectRFQ

LP38841T-1.2/LF03

Texas InstrumentsIn Stock: 1202LP38841T-1.2/LF03 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LP38841T-1.2 is based on electrical and mechanical parameter equivalence across the following criteria:

• Output voltage and current specifications (1.2V fixed, 800mA)
• Input voltage rating (5.5V maximum)
• Dropout voltage performance (0.21V @ 800mA)
• Thermal and quiescent current characteristics
• Package configuration (TO-220-5)
• Protection feature set (over-current, over-temperature, short-circuit)
• Operating temperature range (-40°C to 125°C)

The substitute parts LP38841T-1.2/NOPB and LP38841T-1.2/LF03 maintain identical electrical specifications and differ only in packaging format (standard tube vs. formed leads) and compliance status. Both are active products from Texas Instruments, providing direct functional equivalence to the obsolete base part number.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production applications, LP38841T-1.2/NOPB or LP38841T-1.2/LF03 are the appropriate selections due to their active product status. The original LP38841T-1.2 is obsolete and should not be specified for new applications.

LP38841T-1.2/NOPB is supplied in standard tube packaging and carries ROHS3 compliance certification. LP38841T-1.2/LF03 features formed leads in the TO-220-5 package configuration and also meets ROHS3 compliance requirements. Both variants maintain identical electrical performance and protection characteristics.

Selection between the two active variants depends on mechanical assembly requirements: standard leads (NOPB) or formed leads (LF03). Both are REACH unaffected and carry the same ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can LP38841T-1.2/NOPB and LP38841T-1.2/LF03 be used interchangeably with the original LP38841T-1.2?

A: Yes. All three part numbers deliver identical electrical specifications: 1.2V fixed output, 800mA current capacity, 0.21V dropout voltage, and equivalent protection features. The differences are product status (obsolete vs. active) and packaging format (standard vs. formed leads).

Q: What is the difference between LP38841T-1.2/NOPB and LP38841T-1.2/LF03?

A: Both are active products with identical electrical performance. LP38841T-1.2/NOPB uses standard TO-220-5 leads, while LP38841T-1.2/LF03 features formed leads in the same package. The choice depends on your PCB assembly process and mechanical requirements.

Q: Why is the original LP38841T-1.2 marked as obsolete?

A: The base part number has been superseded by the active variants LP38841T-1.2/NOPB and LP38841T-1.2/LF03. For new designs and production, these active alternatives should be specified.

Q: Are there RoHS compliance differences between the parts?

A: Yes. The original LP38841T-1.2 is RoHS non-compliant. Both LP38841T-1.2/NOPB and LP38841T-1.2/LF03 are ROHS3 compliant, making them suitable for applications with RoHS requirements.

Q: Can I use these regulators in applications requiring -40°C to 125°C operation?

A: Yes. All three part numbers are rated for the full -40°C to 125°C operating temperature range with identical thermal protection features.

Q: What protection features are included in these regulators?

A: All variants include over-current, over-temperature, and short-circuit protection. An enable control feature is also integrated for power management applications.