LP2986IMX-3.3 Equivalent & Substitute Parts

Part Overview

The LP2986IMX-3.3 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 3.3V output at 200mA with a maximum dropout voltage of 0.35V. This micropower regulator is designed for applications requiring stable, low-noise power delivery in space-constrained environments. The part is currently classified as obsolete, making identification of active equivalent and substitute components essential for ongoing production and design continuity.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3.3V
Output Current	200mA
Maximum Input Voltage	16V
Dropout Voltage (Max)	0.35V @ 200mA
Quiescent Current	120 µA
PSRR	65dB (1kHz)
Package	8-SOIC (0.154", 3.90mm Width)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

Substitution for the LP2986IMX-3.3 is determined by strict equivalence across the following critical parameters:

Fixed output voltage of 3.3V
Output current capability of 200mA
Maximum input voltage rating of 16V
Dropout voltage specification of 0.35V @ 200mA
Quiescent current of 120 µA
PSRR of 65dB (1kHz)
8-SOIC package configuration
Operating temperature range of -40°C to 125°C
Identical protection features (Over Current, Over Temperature, Short Circuit)
Enable control functionality

All identified substitute parts meet these parameters without deviation. Substitutes are grouped by product status and availability.

Parameter Comparison

Parameter	LP2986IMX-3.3	LP2986IMX-3.3/NOPB	LP2986AIMX-3.3/NOPB	LP2988AIMX-3.3/NOPB
Manufacturer	Texas Instruments	National Semiconductor	National Semiconductor	National Semiconductor
Product Status	Obsolete	Active	Active	Active
Output Voltage	3.3V	3.3V	3.3V	3.3V
Output Current	200mA	200mA	200mA	200mA
Maximum Input Voltage	16V	16V	16V	16V
Dropout Voltage (Max)	0.35V @ 200mA	0.35V @ 200mA	0.35V @ 200mA	0.35V @ 200mA
Quiescent Current	120 µA	120 µA	120 µA	120 µA
PSRR	65dB (1kHz)	65dB (1kHz)	65dB (1kHz)	65dB (1kHz)
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
Control Features	Enable	Enable	Enable	Enable
Inventory Status	5400 Pcs New Original In Stock	4322 Pcs New Original In Stock	2100 Pcs New Original In Stock	2686 Pcs New Original In Stock

Engineering Selection Recommendations

All three substitute parts—LP2986IMX-3.3/NOPB, LP2986AIMX-3.3/NOPB, and LP2988AIMX-3.3/NOPB—are classified as active products from National Semiconductor, providing direct functional equivalence to the obsolete LP2986IMX-3.3 from Texas Instruments.

LP2986IMX-3.3/NOPB and LP2986AIMX-3.3/NOPB maintain identical base product designations (LP2986) with the latter offering the "A" grade variant. LP2988AIMX-3.3/NOPB represents an alternative series designation while maintaining all critical electrical and mechanical parameters.

Selection among these substitutes should be based on availability, supply chain requirements, and packaging preferences, as all three deliver equivalent performance across the specified parameter set.

Frequently Asked Questions (FAQ)

Q: Can LP2986AIMX-3.3/NOPB directly replace LP2986IMX-3.3 in existing designs?

A: Yes. Both parts deliver identical electrical performance across all specified parameters: 3.3V fixed output, 200mA current capability, 0.35V dropout voltage, 65dB PSRR, and 8-SOIC packaging. The "A" grade designation indicates a product variant within the same functional family.

Q: What is the difference between LP2986IMX-3.3/NOPB and LP2986AIMX-3.3/NOPB?

A: Both are National Semiconductor products with identical electrical specifications. The primary distinction is the grade designation ("I" versus "A"), which does not affect the core performance parameters listed in this reference.

Q: Is LP2988AIMX-3.3/NOPB compatible with designs using LP2986IMX-3.3?

A: Yes. LP2988AIMX-3.3/NOPB meets all critical substitution parameters: 3.3V output, 200mA current, 0.35V dropout voltage, identical quiescent current, PSRR, package configuration, and operating temperature range. The series designation change (LP2988 versus LP2986) does not affect functional compatibility.

Q: Are there any package or pinout differences among these substitutes?

A: No. All parts use the 8-SOIC package with identical 0.154" width (3.90mm). Pinout and mechanical compatibility are preserved across all substitutes.

Q: Why is the original LP2986IMX-3.3 marked as obsolete?

A: Product obsolescence reflects manufacturer lifecycle decisions. Active equivalents from National Semiconductor ensure continued availability and supply chain continuity for this 3.3V, 200mA linear regulator function.

Q: Do all substitutes carry the same certifications and compliance status?

A: All parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. Compliance documentation should be verified with the specific supplier for current RoHS and REACH status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message