LP2988IMX-5.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP2988IMX-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 200mA current capacity. This device operates in the Power Management (PMIC) category and provides regulated power supply functionality in 8-SOIC surface mount packaging.

The main part number LP2988IMX-5.0 carries an Obsolete product status. Equivalent and substitute parts are available in Active status with improved compliance certifications, making them suitable for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	5V
Voltage - Input (Max)	16V
Current - Output	200mA
Voltage Dropout (Max)	0.35V @ 200mA
Current - Quiescent (Iq)	120 µA
PSRR	65dB (1kHz)
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

Substitute parts for the LP2988IMX-5.0 are classified based on electrical and mechanical parameter equivalence:

Direct Manufacturer Equivalent:

LP2988IMX-5.0/NOPB: Identical electrical specifications and package configuration. Differs only in packaging format (Tape & Reel vs. standard packaging) and product status (Active vs. Obsolete).

Parametric Equivalents:

LP2986IMX-5.0/NOPB and LP2986AIMX-5.0/NOPB: Share identical electrical performance across all critical parameters including output voltage, current capacity, dropout voltage, quiescent current, PSRR, protection features, and operating temperature range. Package and mounting type are identical.
LP2987IMX-5.0/NOPB and LP2987AIMX-5.0/NOPB: Maintain full electrical parameter equivalence with the main part. All functional specifications, thermal performance, and protection mechanisms are identical.

Substitution eligibility is determined by matching the following critical parameters: Output Configuration, Output Type, Fixed Output Voltage (5V), Maximum Input Voltage (16V), Output Current (200mA), Voltage Dropout (0.35V @ 200mA), Quiescent Current (120 µA), PSRR (65dB @ 1kHz), Operating Temperature Range (-40°C ~ 125°C), Package Type (8-SOIC), and Protection Features (Over Current, Over Temperature, Short Circuit).

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	PSRR	Package	RoHS Status	Inventory
LP2988IMX-5.0	Texas Instruments	Obsolete	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	RoHS non-compliant	782 Pcs
LP2988IMX-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	ROHS3 Compliant	2100 Pcs
LP2986IMX-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	ROHS3 Compliant	4004 Pcs
LP2986AIMX-5.0/NOPB	National Semiconductor	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	Not specified	2100 Pcs
LP2987IMX-5.0/NOPB	National Semiconductor	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	Not specified	3700 Pcs
LP2987AIMX-5.0/NOPB	National Semiconductor	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	Not specified	3700 Pcs

Engineering Selection Recommendations

For Active Production and New Designs: LP2988IMX-5.0/NOPB is the primary recommended substitute. It maintains identical electrical specifications while offering Active product status and ROHS3 compliance certification. The Tape & Reel packaging format supports automated assembly processes.

For Extended Availability: LP2986IMX-5.0/NOPB provides the highest inventory level (4004 Pcs) with Active status and ROHS3 compliance. This part is suitable when supply continuity is a priority.

For Alternative Sourcing: LP2987IMX-5.0/NOPB and LP2987AIMX-5.0/NOPB from National Semiconductor offer equivalent electrical performance with substantial inventory availability (3700 Pcs each) and Active product status.

All substitute parts maintain identical electrical performance, thermal characteristics, protection mechanisms, and package compatibility with the original LP2988IMX-5.0 design.

Frequently Asked Questions (FAQ)

Q: Can LP2988IMX-5.0/NOPB directly replace LP2988IMX-5.0 in existing designs? A: Yes. Both parts share identical electrical specifications, output voltage, current capacity, dropout voltage, quiescent current, PSRR, operating temperature range, and 8-SOIC package configuration. The primary difference is product status (Active vs. Obsolete) and RoHS compliance level.

Q: What is the difference between LP2988IMX-5.0 and LP2986IMX-5.0? A: Both devices provide identical electrical performance across all specified parameters: 5V fixed output, 200mA current capacity, 0.35V dropout voltage, 120 µA quiescent current, 65dB PSRR, and -40°C to 125°C operating range. They are functionally interchangeable in the same 8-SOIC package.

Q: Are National Semiconductor parts (LP2987 and LP2986A series) compatible with Texas Instruments LP2988? A: Yes. All substitute parts maintain identical electrical specifications and 8-SOIC package configuration. Compatibility is determined by matching output voltage (5V), current capacity (200mA), dropout voltage (0.35V @ 200mA), quiescent current (120 µA), PSRR (65dB @ 1kHz), and operating temperature range (-40°C ~ 125°C).

Q: What packaging formats are available for substitute parts? A: LP2988IMX-5.0/NOPB is supplied in Tape & Reel format. LP2986AIMX-5.0/NOPB, LP2987AIMX-5.0/NOPB, and LP2987IMX-5.0/NOPB are available in Bulk packaging. All parts use identical 8-SOIC (0.154", 3.90mm Width) surface mount package configuration.

Q: Which substitute part offers the best inventory availability? A: LP2986IMX-5.0/NOPB provides the highest inventory level at 4004 Pcs with Active product status and ROHS3 compliance.

Q: Are all substitute parts RoHS compliant? A: LP2988IMX-5.0/NOPB and LP2986IMX-5.0/NOPB are ROHS3 compliant. RoHS status for National Semiconductor parts (LP2986AIMX-5.0/NOPB, LP2987IMX-5.0/NOPB, LP2987AIMX-5.0/NOPB) is not specified in the provided data.

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