LP2988IMX-3.3 Equivalent & Substitute Parts

Part Overview

The LP2988IMX-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output at 200mA. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The LP2988IMX-3.3 operates across -40°C to 125°C with integrated protection features including over-current, over-temperature, and short-circuit protection. Surface mount 8-SOIC packaging enables compact integration in power management applications.

Substiute Parts

LP2988IMX-3.3

Texas InstrumentsIn Stock: 3277LP2988IMX-3.3 Datasheet

Current PartRFQ

LP2987IM-3.3/NOPB

Texas InstrumentsIn Stock: 2326LP2987IM-3.3/NOPB Datasheet

MFR RecommendedRFQ

LP2986AIMX-3.3/NOPB

National SemiconductorIn Stock: 2207LP2986AIMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP2986IMX-3.3/NOPB

National SemiconductorIn Stock: 4371LP2986IMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

LP2988AIMX-3.3/NOPB

National SemiconductorIn Stock: 2737LP2988AIMX-3.3/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP2988IMX-3.3 is determined by electrical and mechanical parameter equivalence. All substitute parts maintain identical output voltage (3.3V fixed), output current (200mA), input voltage rating (16V maximum), dropout voltage (0.35V @ 200mA), quiescent current (120 µA), PSRR (65dB at 1kHz), and package configuration (8-SOIC). All substitute parts include identical protection features (over-current, over-temperature, short-circuit) and control features (enable function). Operating temperature range remains -40°C to 125°C across all alternatives. The grouping reflects manufacturer lineups within the LP298x series, where LP2987IM-3.3/NOPB represents the manufacturer-recommended substitute, while LP2986AIMX-3.3/NOPB, LP2986IMX-3.3/NOPB, and LP2988AIMX-3.3/NOPB serve as parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

LP2987IM-3.3/NOPB is the manufacturer-recommended substitute, maintaining Texas Instruments sourcing with active product status and ROHS3 compliance certification. This part provides direct functional replacement with identical electrical specifications and 8-SOIC package compatibility.

LP2986AIMX-3.3/NOPB, LP2986IMX-3.3/NOPB, and LP2988AIMX-3.3/NOPB are parametric equivalents from National Semiconductor with active product status. These parts maintain all critical electrical parameters and package configuration. Selection among these alternatives depends on procurement availability and supply chain requirements, as all three deliver equivalent performance within the specified operating envelope.

Frequently Asked Questions (FAQ)

Q: Can LP2987IM-3.3/NOPB directly replace LP2988IMX-3.3 in existing designs?

A: Yes. LP2987IM-3.3/NOPB maintains identical output voltage (3.3V), output current (200mA), dropout voltage (0.35V @ 200mA), quiescent current (120 µA), PSRR (65dB at 1kHz), and 8-SOIC package configuration. Pin-to-pin compatibility and electrical performance are equivalent.

Q: What is the difference between LP2986 and LP2988 series substitutes?

A: Both LP2986 and LP2988 series parts meet all electrical and mechanical parameters specified for LP2988IMX-3.3 substitution. Selection is based on procurement availability and supply chain logistics, as parametric performance is identical across both series.

Q: Are National Semiconductor parts (LP2986, LP2988) equivalent to Texas Instruments LP2987?

A: Yes. All substitute parts maintain identical electrical specifications: 3.3V fixed output, 200mA current, 16V maximum input, 0.35V dropout voltage, 120 µA quiescent current, and 65dB PSRR. Package configuration (8-SOIC) and protection features (over-current, over-temperature, short-circuit) are identical.

Q: Does packaging type affect substitution compatibility?

A: No. All substitute parts use 8-SOIC (0.154", 3.90mm Width) surface mount packaging. Packaging variations (Tube, Bulk) refer to supplier delivery format and do not affect electrical or mechanical compatibility in circuit applications.

Q: Why is LP2988IMX-3.3 marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Texas Instruments. Active substitute parts (LP2987IM-3.3/NOPB, LP2986AIMX-3.3/NOPB, LP2986IMX-3.3/NOPB, LP2988AIMX-3.3/NOPB) provide continued design support and procurement availability.