LP5990TM-3.3/NOPB Equivalent & Substitute Parts

Part Overview

The LP5990TM-3.3/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output at 200mA in a 4-DSBGA package. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device provides regulated power management with integrated protection features including over-current, over-temperature, and short-circuit protection, suitable for compact surface-mount applications requiring low-dropout regulation.

Substiute Parts

LP5990TM-3.3/NOPB

Texas InstrumentsIn Stock: 1179LP5990TM-3.3/NOPB Datasheet

Current PartRFQ

LP5990TMX-3.3/NOPB

Texas InstrumentsIn Stock: 3054LP5990TMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

ADP151ACBZ-3.3-R7

Analog Devices Inc.In Stock: 17585ADP151ACBZ-3.3-R7 Datasheet

MFR RecommendedRFQ

TCR2DG30,LF

Toshiba Semiconductor and StorageIn Stock: 732TCR2DG30,LF Datasheet

MFR RecommendedRFQ

TCR2DG33,LF

Toshiba Semiconductor and StorageIn Stock: 12336TCR2DG33,LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP5990TM-3.3/NOPB is determined by the following critical parameters:

• Output voltage: 3.3V fixed
• Output current capability: 200mA minimum
• Input voltage tolerance: 5.5V maximum
• Voltage dropout performance: ≤0.25V @ 200mA
• Operating temperature range: -40°C to 85°C minimum
• Package compatibility: 4-pin BGA variants (DSBGA, WLCSP, WCSP)
• Surface-mount capability
• Protection features: Over-current and over-temperature protection

Parts meeting these criteria are classified as parametric equivalents. The LP5990TMX-3.3/NOPB from Texas Instruments is an exact parametric match with identical electrical specifications and packaging. The ADP151ACBZ-3.3-R7 from Analog Devices and TCR2DG33,LF from Toshiba meet the core functional requirements with minor performance variations in dropout voltage and quiescent current. The TCR2DG30,LF provides 3V output and serves as a substitute only for applications tolerant of lower output voltage.

Parameter Comparison

Engineering Selection Recommendations

The LP5990TMX-3.3/NOPB is the primary recommended substitute, offering identical electrical specifications and packaging to the obsolete LP5990TM-3.3/NOPB while maintaining active product status. This part ensures direct compatibility with existing PCB layouts and design requirements without modification.

The ADP151ACBZ-3.3-R7 from Analog Devices provides superior performance characteristics including lower quiescent current (20 µA vs. 75 µA) and improved dropout voltage (0.2V @ 200mA), with extended operating temperature range to 125°C. Package dimensions differ slightly (0.76x0.76mm vs. 0.79x0.79mm), requiring PCB footprint verification. This part is suitable for applications prioritizing power efficiency and thermal performance.

The TCR2DG33,LF from Toshiba matches the 3.3V output specification with superior dropout performance (0.11V @ 100mA) and is available in higher inventory quantities. Package compatibility requires verification due to WCSP variant differences from the original DSBGA.

The TCR2DG30,LF provides 3V output and is suitable only for applications where 3V regulation is acceptable, not as a direct 3.3V substitute.

All recommended substitutes maintain ROHS3 compliance and MSL Level 1 moisture sensitivity ratings consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can LP5990TMX-3.3/NOPB be used as a direct replacement for LP5990TM-3.3/NOPB?

A: Yes. The LP5990TMX-3.3/NOPB is a parametric equivalent with identical electrical specifications (3.3V output, 200mA, 0.25V dropout @ 200mA, 75 µA quiescent current) and package type (4-DSBGA). The primary difference is product status: the original is obsolete while the TMX variant is active. PCB layout compatibility is maintained.

Q: What are the package differences between substitute parts?

A: The LP5990TMX-3.3/NOPB uses 4-DSBGA packaging identical to the original. The ADP151ACBZ-3.3-R7 uses 4-WLCSP (0.76x0.76mm), and TCR2DG33,LF uses 4-WCSP (0.79x0.79mm). While all are 4-pin BGA variants, footprint dimensions differ slightly. PCB design verification is required before substitution.

Q: Which substitute offers the best performance improvement?

A: The ADP151ACBZ-3.3-R7 provides the lowest quiescent current (20 µA vs. 75 µA) and superior dropout voltage (0.2V @ 200mA), reducing power dissipation and improving efficiency. It also supports extended operating temperature to 125°C. Trade-off is package dimension difference requiring PCB footprint adjustment.

Q: Can TCR2DG30,LF be used instead of TCR2DG33,LF?

A: No. TCR2DG30,LF provides 3V output while the application requires 3.3V. This substitution is only valid for designs tolerant of lower output voltage. For 3.3V regulation, use TCR2DG33,LF.

Q: Are all substitutes RoHS and REACH compliant?

A: Yes. All recommended substitutes (LP5990TMX-3.3/NOPB, ADP151ACBZ-3.3-R7, TCR2DG33,LF, and TCR2DG30,LF) are ROHS3 compliant with MSL Level 1 moisture sensitivity ratings. Compliance documentation is available from respective manufacturers.

Q: What is the minimum output current requirement for substitution?

A: All recommended substitutes support 200mA output current minimum, matching the original specification. Applications requiring higher current capability require different part selection outside this equivalency group.