LP3874ESX-ADJ Linear Voltage Regulator

Part Overview

The LP3874ESX-ADJ is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This device delivers 800mA output current in a compact TO-263 (DDPAK-5) surface mount package. The part is classified as obsolete, making identification of suitable alternatives essential for ongoing production and maintenance applications. The adjustable output configuration allows for flexible voltage regulation across a 1.2V to 6.6V range, with integrated protection features including over-current, over-temperature, and short-circuit protection.

Substiute Parts

LP3874ESX-ADJ

Texas InstrumentsIn Stock: 1474LP3874ESX-ADJ Datasheet

Current PartRFQ

LP3874ESX-ADJ/NOPB

Texas InstrumentsIn Stock: 1604LP3874ESX-ADJ/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP3874ESX-ADJ is determined by strict equivalence across the following critical parameters:

• Output configuration (Positive)
• Output type (Adjustable)
• Number of regulators (1)
• Maximum input voltage (7V)
• Output voltage range (1.2V to 6.6V)
• Output current capability (800mA)
• Voltage dropout specification (0.35V @ 800mA)
• Package type (TO-263-6, D2PAK with 5 leads plus tab)
• Surface mount mounting type
• Operating temperature range (-40°C ~ 125°C)

The LP3874ESX-ADJ/NOPB qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LP3874ESX-ADJ/NOPB is the direct functional equivalent of the LP3874ESX-ADJ. Both devices share identical electrical specifications and mechanical packaging. The LP3874ESX-ADJ/NOPB is preferred for new designs and ongoing production due to its active product status and ROHS3 compliance. The original LP3874ESX-ADJ is obsolete and RoHS non-compliant, limiting its suitability for applications subject to environmental regulations or requiring long-term component availability.

The /NOPB suffix indicates tape and reel packaging, which is standard for production quantities. This packaging format is appropriate for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the LP3874ESX-ADJ/NOPB be used as a direct replacement for the LP3874ESX-ADJ?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The LP3874ESX-ADJ/NOPB is the active production equivalent.

Q: What does the /NOPB suffix indicate?

A: The /NOPB suffix denotes tape and reel packaging format, which is the standard packaging for production quantities. This differs from bulk packaging but does not affect electrical performance.

Q: Are there any compliance differences between these parts?

A: Yes. The LP3874ESX-ADJ/NOPB is ROHS3 compliant, while the original LP3874ESX-ADJ is RoHS non-compliant. For applications subject to environmental regulations, the LP3874ESX-ADJ/NOPB is required.

Q: Is the TO-263 package compatible with existing PCB layouts designed for the LP3874ESX-ADJ?

A: Yes. Both parts use the TO-263-6 (D2PAK with 5 leads plus tab) package. Pin configuration and footprint are identical.

Q: What is the maximum output current for this regulator?

A: The maximum output current is 800mA for both the LP3874ESX-ADJ and LP3874ESX-ADJ/NOPB.

Q: What output voltage range is supported?

A: The adjustable output range is 1.2V to 6.6V for both parts.