LP5990TMX-3.3/NOPB Equivalent & Substitute Parts

Part Overview

The LP5990TMX-3.3/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, designed to deliver a fixed 3.3V output at 200mA. This positive fixed output regulator operates across an input voltage range up to 5.5V with a maximum dropout voltage of 0.25V at full load current. The device is housed in a 4-DSBGA package and is actively produced with full RoHS3 compliance.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory constraints, or specific package form factor preferences while maintaining electrical and mechanical compatibility within the defined parameter specifications.

Substiute Parts

LP5990TMX-3.3/NOPB

Texas InstrumentsIn Stock: 3054LP5990TMX-3.3/NOPB Datasheet

Current PartRFQ

TCR2DG33,LF

Toshiba Semiconductor and StorageIn Stock: 12336TCR2DG33,LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP5990TMX-3.3/NOPB is determined by the following critical parameters:

• Fixed output voltage of 3.3V
• Output current capability of 200mA minimum
• Maximum input voltage of 5.5V or greater
• Operating temperature range of -40°C to 85°C
• Surface mount packaging in micro ball grid array or wafer-level chip scale package form factors
• RoHS3 compliance and MSL Level 1 rating
• Single positive fixed output regulator configuration

The TCR2DG33,LF from Toshiba Semiconductor and Storage meets all substitution criteria within these electrical and mechanical boundaries.

Parameter Comparison

Engineering Selection Recommendations

Both the LP5990TMX-3.3/NOPB and TCR2DG33,LF are active production devices with full RoHS3 compliance, REACH unaffected status, and EAR99 export classification. Selection between these parts is based on:

• Package form factor availability: The LP5990TMX-3.3/NOPB uses 4-DSBGA packaging, while the TCR2DG33,LF uses 4-WCSP (0.79x0.79mm) packaging. Both are surface mount micro ball grid array variants with identical footprint compatibility for 4-pin ultra-compact applications.
• Dropout voltage performance: The TCR2DG33,LF exhibits lower dropout voltage (0.11V @ 100mA) compared to the LP5990TMX-3.3/NOPB (0.25V @ 200mA), providing improved efficiency in low-headroom applications.
• Quiescent current: Both devices operate at comparable quiescent current levels (70-75 µA), with negligible difference for power consumption calculations.
• Inventory and lead time: Selection may be influenced by current stock availability and supplier delivery schedules.

Frequently Asked Questions (FAQ)

Q: Can the TCR2DG33,LF directly replace the LP5990TMX-3.3/NOPB in existing designs?

A: Yes, provided the PCB layout accommodates the 4-WCSP (0.79x0.79mm) package footprint. Both devices deliver identical 3.3V fixed output at 200mA with matching input voltage ratings, operating temperature ranges, and compliance certifications. Pin-to-pin compatibility exists for the 4-pin configuration.

Q: What are the key differences between these two regulators?

A: The primary differences are package designation (4-DSBGA versus 4-WCSP) and dropout voltage specification. The TCR2DG33,LF provides superior dropout voltage performance at 0.11V @ 100mA versus 0.25V @ 200mA for the LP5990TMX-3.3/NOPB. Quiescent current values are functionally equivalent.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the LP5990TMX-3.3/NOPB and TCR2DG33,LF operate across -40°C to 85°C, meeting identical environmental specifications.

Q: Do both parts carry the same regulatory compliance?

A: Yes. Both devices are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. MSL Level 1 rating applies to both, indicating unlimited shelf life under controlled storage conditions.

Q: What protection features does each regulator provide?

A: The LP5990TMX-3.3/NOPB includes over current, over temperature, and short circuit protection. The TCR2DG33,LF provides inrush current limiting, over current protection, and thermal shutdown. Both offer comprehensive fault protection suitable for general-purpose 3.3V regulation applications.