LP5900SD-2.2 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP5900SD-2.2 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 150mA output current at a fixed 2.2V output with a maximum dropout voltage of 0.15V at full load. The part is classified as obsolete, making identification of suitable alternatives essential for ongoing design support and production continuity. The substitute part LP5900SD-2.2/NOPB maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

LP5900SD-2.2

Texas InstrumentsIn Stock: 3766LP5900SD-2.2 Datasheet

Current PartRFQ

LP5900SD-2.2/NOPB

Texas InstrumentsIn Stock: 1913LP5900SD-2.2/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP5900SD-2.2 is determined by strict equivalence across the following critical parameters:

• Output voltage specification (2.2V fixed)
• Output current capability (150mA minimum)
• Maximum input voltage rating (5.5V)
• Dropout voltage performance (0.15V @ 150mA)
• Package type and pinout (6-WSON with exposed pad)
• Operating temperature range (-40°C to 85°C)
• Protection and control feature set (Over Temperature, Short Circuit, Enable function)

The LP5900SD-2.2/NOPB qualifies as a direct substitute because it maintains identical electrical performance, mechanical compatibility, and functional characteristics. The primary distinction is product lifecycle status and compliance certification level.

Parameter Comparison

Engineering Selection Recommendations

The LP5900SD-2.2/NOPB is the appropriate selection for new designs and production continuity. This part maintains complete electrical and mechanical equivalence to the obsolete LP5900SD-2.2 while offering the following advantages:

• Active product status ensures long-term availability and supply chain stability
• ROHS3 compliance satisfies current environmental and regulatory requirements
• Tape & Reel packaging format supports automated assembly processes
• Identical performance characteristics guarantee drop-in compatibility in existing circuit designs

For applications currently using the obsolete LP5900SD-2.2, direct replacement with LP5900SD-2.2/NOPB requires no circuit modifications or design changes.

Frequently Asked Questions (FAQ)

Q: Can LP5900SD-2.2/NOPB be used as a direct replacement for LP5900SD-2.2?

A: Yes. Both parts are electrically and mechanically identical. The LP5900SD-2.2/NOPB is the active production equivalent and can be substituted without circuit modifications.

Q: What is the difference between LP5900SD-2.2 and LP5900SD-2.2/NOPB?

A: The primary differences are product lifecycle status and compliance certification. LP5900SD-2.2/NOPB is active production, ROHS3 compliant, and supplied in Tape & Reel format. The obsolete LP5900SD-2.2 was supplied in bulk packaging and is RoHS non-compliant.

Q: Are there any package or pinout differences?

A: No. Both parts use the 6-WSON (2.2x2.5) package with identical pinout and exposed pad configuration. PCB layouts and footprints are fully compatible.

Q: What output voltage options are available in the LP5900 series?

A: The LP5900 base product number supports multiple fixed output voltage variants. The LP5900SD-2.2 and LP5900SD-2.2/NOPB are specifically configured for 2.2V fixed output.

Q: Is the LP5900SD-2.2/NOPB suitable for high-volume production?

A: Yes. The active product status, Tape & Reel packaging, and ROHS3 compliance make this part suitable for automated assembly and high-volume manufacturing environments.