LP2987IM-3.0 Equivalent & Substitute Parts

Part Overview

The LP2987IM-3.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V 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 continuity. The device provides regulated power management with integrated protection features including over-current, over-temperature, and short-circuit protection.

Key Parameters

Parameter	Value
Manufacturer Part Number	LP2987IM-3.0
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3V
Output Current	200mA
Voltage Dropout (Max)	0.35V @ 200mA
Input Voltage (Max)	16V
Quiescent Current	120 µA
PSRR	65dB (1kHz)
Operating Temperature Range	-40°C ~ 125°C
Package	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 LP2987IM-3.0 are grouped based on strict parametric equivalence across the following critical specifications:

Output voltage configuration: Positive fixed 3V output
Output current capacity: 200mA
Voltage dropout: 0.35V @ 200mA
Maximum input voltage: 16V
Quiescent current: 120 µA
PSRR: 65dB (1kHz)
Protection features: Over Current, Over Temperature, Short Circuit
Package type: 8-SOIC surface mount
Operating temperature range: -40°C ~ 125°C

All substitute parts listed maintain identical electrical performance characteristics and mechanical compatibility with the original LP2987IM-3.0 specification.

Parameter Comparison

Parameter	LP2987IM-3.0	LP2987IM-3.0/NOPB	LP2986AIM-3.0/NOPB	LP2986IM-3.0/NOPB
Manufacturer	Texas Instruments	National Semiconductor	National Semiconductor	Texas Instruments
Product Status	Obsolete	Active	Active	Active
Output Voltage (Fixed)	3V	3V	3V	3V
Output Current	200mA	200mA	200mA	200mA
Voltage Dropout (Max)	0.35V @ 200mA	0.35V @ 200mA	0.35V @ 200mA	0.35V @ 200mA
Input Voltage (Max)	16V	16V	16V	16V
Quiescent Current	120 µA	120 µA	120 µA	120 µA
PSRR	65dB (1kHz)	65dB (1kHz)	65dB (1kHz)	65dB (1kHz)
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC
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

Engineering Selection Recommendations

LP2987IM-3.0/NOPB (National Semiconductor): This direct equivalent maintains active product status and is available in bulk packaging. It provides identical electrical and mechanical specifications to the original part with current inventory availability.

LP2986AIM-3.0/NOPB (National Semiconductor): This parametric equivalent offers active product status with full specification alignment. It represents a viable alternative for new designs and ongoing production requirements.

LP2986IM-3.0/NOPB (Texas Instruments): This parametric equivalent from the original manufacturer maintains active product status and achieves ROHS3 compliance, providing an alternative with enhanced regulatory compliance compared to the original obsolete part. Available in tube packaging.

All three substitute parts satisfy the complete electrical and mechanical requirements of the LP2987IM-3.0 specification and are suitable for direct replacement in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can LP2987IM-3.0/NOPB be used as a direct replacement for LP2987IM-3.0?

A: Yes. The LP2987IM-3.0/NOPB maintains identical electrical specifications, output voltage, current capacity, dropout voltage, and package configuration. The primary difference is active product status and packaging format (bulk versus original packaging).

Q: What is the difference between LP2986AIM-3.0/NOPB and LP2986IM-3.0/NOPB?

A: Both parts are parametric equivalents with identical electrical performance. The primary distinction is manufacturer: LP2986AIM-3.0/NOPB is from National Semiconductor, while LP2986IM-3.0/NOPB is from Texas Instruments. The Texas Instruments variant includes ROHS3 compliance certification.

Q: Are all substitute parts compatible with the original 8-SOIC package footprint?

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

Q: Why is the original LP2987IM-3.0 marked as obsolete?

A: The original part is classified as obsolete by Texas Instruments. The listed substitute parts maintain active product status, ensuring long-term availability and supply chain continuity for applications requiring this 3V, 200mA linear regulator specification.

Q: Do all substitute parts provide the same protection features?

A: Yes. All substitute parts include identical protection features: over-current, over-temperature, and short-circuit protection, with enable control functionality.

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