LP2987IM-5.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP2987IM-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 200mA current capacity in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The LP2987IM-5.0/NOPB represents the direct equivalent with active product status, while additional parametric equivalents from the LP2986 and LP2988 series provide alternative sourcing options with identical electrical performance.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	200mA
Input Voltage (Max)	16V
Voltage Dropout (Max)	0.35V @ 200mA
Quiescent Current	120 µA
PSRR	65dB (1kHz)
Package	8-SOIC (0.154", 3.90mm Width)
Operating Temperature Range	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit

Substitute Part Grouping Explanation

Substitution of the LP2987IM-5.0 is determined by strict equivalence across the following critical parameters: output voltage (5V fixed), output current (200mA), input voltage rating (16V maximum), voltage dropout specification (0.35V @ 200mA), quiescent current (120 µA), PSRR (65dB at 1kHz), package type (8-SOIC), operating temperature range (-40°C ~ 125°C), and protection features (Over Current, Over Temperature, Short Circuit).

All identified substitute parts maintain identical electrical specifications across these parameters. The LP2987IM-5.0/NOPB is a direct manufacturer equivalent with updated RoHS3 compliance and active product status. The LP2986 and LP2988 series parts (LP2986AIM-5.0/NOPB, LP2986IM-5.0/NOPB, LP2988AIM-5.0/NOPB, LP2988IM-5.0/NOPB) are parametric equivalents that deliver the same electrical performance within the same package footprint, differing only in base product designation and manufacturing lineage.

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	PSRR	Package	Operating Temp	RoHS Status
LP2987IM-5.0	Texas Instruments	Obsolete	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	-40°C ~ 125°C	RoHS non-compliant
LP2987IM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	-40°C ~ 125°C	ROHS3 Compliant
LP2986AIM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	-40°C ~ 125°C	ROHS3 Compliant
LP2986IM-5.0/NOPB	National Semiconductor	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	-40°C ~ 125°C	Not specified
LP2988AIM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	-40°C ~ 125°C	ROHS3 Compliant
LP2988IM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	120 µA	65dB (1kHz)	8-SOIC	-40°C ~ 125°C	ROHS3 Compliant

Engineering Selection Recommendations

For new designs and ongoing procurement, LP2987IM-5.0/NOPB is the primary recommended substitute. This part is the direct manufacturer equivalent with active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The LP2986 and LP2988 series parts are valid parametric alternatives when LP2987IM-5.0/NOPB availability is constrained. All substitute options maintain identical electrical performance and 8-SOIC package compatibility, enabling direct PCB-level substitution without circuit redesign.

For applications requiring RoHS3 compliance certification, select from LP2987IM-5.0/NOPB, LP2986AIM-5.0/NOPB, LP2988AIM-5.0/NOPB, or LP2988IM-5.0/NOPB. The LP2986IM-5.0/NOPB from National Semiconductor carries active product status but does not specify RoHS compliance status in available documentation.

Frequently Asked Questions (FAQ)

Q: Can LP2987IM-5.0/NOPB be used as a direct replacement for LP2987IM-5.0?

A: Yes. LP2987IM-5.0/NOPB is the direct manufacturer equivalent with identical electrical specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Both parts are pin-compatible and functionally equivalent at the circuit level.

Q: What is the difference between LP2986, LP2987, and LP2988 series regulators?

A: These are distinct product lines within the Texas Instruments micropower linear regulator family. For the 5V 200mA output configuration, all three series deliver identical electrical performance: 5V fixed output, 200mA current capacity, 0.35V dropout voltage, and 65dB PSRR. Substitution between series is valid based on parametric equivalence rather than product line designation.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. All listed substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical and electrical compatibility without PCB layout modifications.

Q: Does packaging type affect substitution eligibility?

A: Packaging type (Tube, Bulk) refers to the quantity container for procurement and does not affect electrical performance or PCB-level compatibility. All parts are surface mount components in identical 8-SOIC packages.

Q: Which substitute part should be selected for RoHS-compliant applications?

A: LP2987IM-5.0/NOPB, LP2986AIM-5.0/NOPB, LP2988AIM-5.0/NOPB, and LP2988IM-5.0/NOPB all carry ROHS3 compliance certification. These are suitable for applications requiring regulatory compliance documentation.

Q: Can these regulators be used in the full -40°C ~ 125°C temperature range?

A: Yes. All substitute parts are rated for the full -40°C ~ 125°C operating temperature range with identical thermal performance characteristics.

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