LP2997MX/NOPB Equivalent & Substitute Parts

Part Overview

The LP2997MX/NOPB is a DDR-II Terminator PMIC manufactured by Texas Instruments in an 8-SOIC surface mount package. This integrated circuit functions as a voltage regulator specifically designed for DDR-II bus termination applications. The device is currently in active production status with extensive inventory availability. Alternative components may be required due to supply constraints, design optimization, or regional availability considerations.

Substiute Parts

LP2997MX/NOPB

Texas InstrumentsIn Stock: 10189LP2997MX/NOPB Datasheet

Current PartRFQ

BD35390FJ-E2

ROHM SemiconductorIn Stock: 20492BD35390FJ-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The BD35390FJ-E2 manufactured by ROHM Semiconductor qualifies as a functional substitute for the LP2997MX/NOPB based on the following alignment of critical parameters:

Substitution Criteria:

• Package compatibility: Both devices use 8-SOIC (0.154", 3.90mm Width) surface mount packaging
• Functional category: Both are Power Management PMICs designed for DDR bus termination regulation
• Supply voltage overlap: Input voltage range 2.7V ~ 5.5V (BD35390FJ-E2) encompasses the LP2997MX/NOPB supply range of 2.2V ~ 5.5V
• Mounting type: Both are surface mount devices
• Compliance alignment: Both are ROHS3 compliant with MSL rating of 1 (Unlimited)
• Regulatory classification: Both share identical ECCN (EAR99) and HTSUS (8542.39.0001) codes

Parameter Comparison

Engineering Selection Recommendations

Both the LP2997MX/NOPB and BD35390FJ-E2 maintain active product status with full ROHS3 compliance and identical MSL ratings. The BD35390FJ-E2 operates across an extended lower temperature range (-30°C to 100°C) compared to the LP2997MX/NOPB (0°C to 125°C), which may affect suitability depending on application temperature requirements. The minimum input voltage specification for the BD35390FJ-E2 is 2.7V, which is 0.5V higher than the LP2997MX/NOPB minimum of 2.2V. Both devices share identical regulatory classifications and are suitable for DDR bus termination applications where package footprint and surface mount compatibility are required.

Frequently Asked Questions (FAQ)

Q: Can the BD35390FJ-E2 directly replace the LP2997MX/NOPB in existing PCB designs?

A: Physical replacement is possible due to identical 8-SOIC package dimensions (0.154", 3.90mm Width). However, the minimum input voltage specification difference (2.7V vs 2.2V) must be evaluated against your circuit's supply voltage floor. If your design operates below 2.7V, the BD35390FJ-E2 is not suitable.

Q: What is the significance of the different operating temperature ranges?

A: The LP2997MX/NOPB operates from 0°C to 125°C, while the BD35390FJ-E2 operates from -30°C to 100°C. Applications requiring operation above 100°C must use the LP2997MX/NOPB. Applications requiring operation below 0°C can use the BD35390FJ-E2.

Q: Are there packaging format differences between these parts?

A: Yes. The LP2997MX/NOPB is available in Cut Tape (CT) and Digi-Reel® formats, while the BD35390FJ-E2 is supplied in Tape & Reel (TR) format. Verify your procurement and assembly processes support the available packaging format.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the LP2997MX/NOPB and BD35390FJ-E2 are ROHS3 compliant, REACH unaffected, share the same ECCN (EAR99) classification, and have identical HTSUS codes (8542.39.0001). Both carry MSL rating 1 (Unlimited).

Q: What is the functional difference between these DDR termination regulators?

A: Both devices are designed for DDR bus termination regulation. The provided specifications do not include detailed functional differences such as output voltage configurations or internal circuit topology. Consult manufacturer datasheets for application-specific functional requirements.