LP2987IMMX-5.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP2987IMMX-5.0/NOPB is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed 5V output at 200mA with a maximum input voltage of 16V and dropout voltage of 0.35V at full load. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	5V
Output Current	200mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.35V @ 200mA
Quiescent Current	120 µA
Package	8-VSSOP (8-TSSOP, 8-MSOP, 0.118", 3.00mm Width)
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the LP2987IMMX-5.0/NOPB is determined by the following critical parameters:

Fixed output voltage of 5V
Output current capability of 200mA or greater
Maximum input voltage of 12V or higher
Dropout voltage performance at rated load
8-VSSOP or compatible package footprint
Operating temperature range of -40°C to 125°C or wider
Presence of overcurrent, overtemperature, and short-circuit protection
ROHS3 compliance and MSL Level 1 rating

The substitute parts are grouped into two categories: parametric equivalents from Texas Instruments (LP2986 and LP2988 series) that share identical electrical specifications and package compatibility, and a manufacturer-recommended alternative from Analog Devices (ADP3333ARMZ-5-R7) that meets or exceeds performance requirements with higher output current capability.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	Package	Operating Temp	Product Status
LP2987IMMX-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Obsolete
LP2986AIMM-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2986AIMMX-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2986IMM-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2986IMMX-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2987AIMM-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2987IMM-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2988AIMM-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
LP2988IMM-5.0/NOPB	Texas Instruments	5V	200mA	16V	0.35V @ 200mA	120 µA	8-VSSOP	-40°C ~ 125°C	Active
ADP3333ARMZ-5-R7	Analog Devices Inc.	5V	300mA	12V	0.23V @ 300mA	100 µA	8-MSOP	-40°C ~ 85°C	Active

Engineering Selection Recommendations

All Texas Instruments LP2986 and LP2987/LP2988 series parts listed are active products with ROHS3 compliance and MSL Level 1 rating, providing direct functional equivalence to the obsolete LP2987IMMX-5.0/NOPB. These parts maintain identical electrical specifications and package compatibility, enabling direct substitution in existing designs.

The Analog Devices ADP3333ARMZ-5-R7 is an active manufacturer-recommended alternative that exceeds the original part's performance specifications with 300mA output current capability and improved dropout voltage of 0.23V at rated load. However, this part operates at a maximum input voltage of 12V compared to the original 16V specification, and its operating temperature range extends to 85°C rather than 125°C. The ADP3333ARMZ-5-R7 is suitable for applications where higher output current is beneficial and input voltage does not exceed 12V.

Frequently Asked Questions (FAQ)

Q: Can LP2986 series parts directly replace the LP2987IMMX-5.0/NOPB?

A: Yes. The LP2986 series (LP2986AIMM-5.0/NOPB, LP2986AIMMX-5.0/NOPB, LP2986IMM-5.0/NOPB, LP2986IMMX-5.0/NOPB) are parametric equivalents with identical output voltage, current, input voltage rating, dropout voltage, quiescent current, package, and operating temperature range. All are active products with ROHS3 compliance.

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

A: Both LP2987 and LP2988 series parts share identical electrical specifications and package compatibility with the original LP2987IMMX-5.0/NOPB. The series designation reflects internal design revisions, but functional performance remains equivalent for the 5V 200mA output configuration.

Q: Can the ADP3333ARMZ-5-R7 be used as a substitute?

A: The ADP3333ARMZ-5-R7 meets the core functional requirements with 5V fixed output and 200mA minimum current capability. It offers superior performance with 300mA output current and lower dropout voltage. However, the maximum input voltage is limited to 12V versus the original 16V, and the operating temperature range is -40°C to 85°C. Substitution is valid only if these constraints are acceptable for the application.

Q: Are all substitute parts in the same package?

A: All Texas Instruments LP2986, LP2987, and LP2988 series parts use the 8-VSSOP package (8-TSSOP, 8-MSOP, 0.118", 3.00mm Width). The Analog Devices ADP3333ARMZ-5-R7 uses the 8-MSOP package, which is mechanically and electrically compatible with the 8-VSSOP footprint.

Q: What is the difference between IMM and IMMX packaging designations?

A: Both IMM and IMMX designations refer to the same 8-VSSOP package. The "X" suffix indicates extended tape and reel packaging specifications. Electrical performance and pin compatibility are identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental and regulatory status.

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