LP2986IM-3.3 Equivalent & Substitute Parts

Part Overview

The LP2986IM-3.3 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V 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. The substitute parts listed maintain identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3.3V
Output Current	200mA
Input Voltage (Max)	16V
Voltage Dropout (Max)	0.35V @ 200mA
Quiescent Current	120 µA
PSRR	65dB (1kHz)
Package / Case	8-SOIC (0.154", 3.90mm Width)
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the LP2986IM-3.3 is determined by strict equivalence across the following critical parameters:

Output voltage configuration: Positive fixed 3.3V
Output current capacity: 200mA
Maximum input voltage: 16V
Voltage dropout specification: 0.35V @ 200mA
Quiescent current: 120 µA
PSRR performance: 65dB (1kHz)
Package type: 8-SOIC surface mount
Operating temperature range: -40°C ~ 125°C
Protection features: Over Current, Over Temperature, Short Circuit
Control features: Enable function

All substitute parts maintain these specifications without deviation. The LP2986IM-3.3/NOPB and LP2986AIM-3.3/NOPB are direct variants of the base LP2986 series with identical electrical performance. The LP2987IM-3.3/NOPB represents a parametric equivalent from the LP2987 series, offering the same functional output and electrical characteristics within the same package footprint.

Parameter Comparison

Parameter	LP2986IM-3.3	LP2986IM-3.3/NOPB	LP2986AIM-3.3/NOPB	LP2987IM-3.3/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Voltage	3.3V	3.3V	3.3V	3.3V
Output Current	200mA	200mA	200mA	200mA
Input Voltage (Max)	16V	16V	16V	16V
Voltage Dropout (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 / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 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
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For new designs and ongoing procurement, LP2986IM-3.3/NOPB is the primary substitute. This part maintains identical electrical specifications to the obsolete LP2986IM-3.3 while offering active product status and ROHS3 compliance certification. The /NOPB designation indicates lead-free processing, aligning with current environmental and regulatory standards.

LP2986AIM-3.3/NOPB serves as an alternative within the LP2986 family, providing the same parametric performance with active availability and ROHS3 compliance.

LP2987IM-3.3/NOPB represents a cross-series parametric equivalent from the LP2987 family. All electrical and thermal characteristics remain identical, with identical package footprint compatibility. This part is suitable for applications where LP2987 series qualification or inventory alignment is preferred.

All three substitute parts carry REACH Unaffected status and EAR99 export classification, matching the original part's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can LP2986IM-3.3/NOPB be used as a direct replacement for LP2986IM-3.3?

A: Yes. Both parts deliver identical electrical performance: 3.3V fixed output, 200mA current capacity, 0.35V maximum dropout at 200mA, and 65dB PSRR at 1kHz. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin configuration and package footprint are identical.

Q: What is the difference between LP2986AIM-3.3/NOPB and LP2986IM-3.3/NOPB?

A: Both parts are from the LP2986 family with identical electrical specifications and 8-SOIC packaging. The difference lies in the internal device designation (A variant vs. standard variant), but all electrical parameters, output voltage, current capacity, and protection features remain equivalent. Both are active products with ROHS3 compliance.

Q: Is LP2987IM-3.3/NOPB compatible with designs using LP2986IM-3.3?

A: Yes. LP2987IM-3.3/NOPB is a parametric equivalent offering identical output voltage (3.3V), output current (200mA), dropout voltage (0.35V @ 200mA), quiescent current (120 µA), and PSRR (65dB at 1kHz). The 8-SOIC package footprint is identical, enabling direct PCB compatibility.

Q: Are there any compliance or certification differences between these parts?

A: The original LP2986IM-3.3 is RoHS non-compliant. All three substitute parts (LP2986IM-3.3/NOPB, LP2986AIM-3.3/NOPB, and LP2987IM-3.3/NOPB) are ROHS3 compliant with lead-free processing. All parts share identical REACH Unaffected and EAR99 export classifications.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin configuration and footprint. No PCB layout modifications are required for substitution.

Q: What is the operating temperature range for these regulators?

A: All parts operate across -40°C to 125°C, supporting industrial and extended temperature applications.

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