LP2988IM-5.0 Equivalent & Substitute Parts

Part Overview

The LP2988IM-5.0 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed positive 5V output at 200mA with a maximum dropout voltage of 0.35V at full load current. The main part number LP2988IM-5.0 is currently listed as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	16V
Voltage - Output (Min/Fixed)	5V
Voltage Dropout (Max)	0.35V @ 200mA
Current - Output	200mA
Current - Quiescent (Iq)	120 µA
Current - Supply (Max)	3.7 mA
PSRR	65dB (1kHz)
Control Features	Enable
Protection Features	Over Current, Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LP2988IM-5.0 is determined by strict equivalence across the following critical parameters:

Output voltage: 5V fixed
Output current capability: 200mA
Maximum input voltage: 16V
Dropout voltage: 0.35V @ 200mA
Package type: 8-SOIC with 0.154" width (3.90mm)
Control features: Enable function
Protection: Over Current, Over Temperature, Short Circuit
Operating temperature range: -40°C ~ 125°C

All identified substitute parts maintain identical electrical specifications and mechanical compatibility. Substitutes are grouped into two categories: direct manufacturer equivalents (same base part number with updated packaging or compliance status) and parametric equivalents (different base part numbers with identical electrical and mechanical characteristics).

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage	Package	RoHS Status	Inventory (Pcs)
LP2988IM-5.0	Texas Instruments	Obsolete	5V	200mA	16V	0.35V @ 200mA	8-SOIC	RoHS non-compliant	3889
LP2988IM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	8-SOIC	ROHS3 Compliant	2200
LP2988AIM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	8-SOIC	ROHS3 Compliant	2524
LP2987IM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	8-SOIC	ROHS3 Compliant	3800
LP2986AIM-5.0/NOPB	Texas Instruments	Active	5V	200mA	16V	0.35V @ 200mA	8-SOIC	ROHS3 Compliant	5200
LP2986IM-5.0/NOPB	National Semiconductor	Active	5V	200mA	16V	0.35V @ 200mA	8-SOIC	Not specified	2800

Engineering Selection Recommendations

LP2988IM-5.0/NOPB is the primary direct substitute, offering identical electrical and mechanical specifications with active product status and ROHS3 compliance. This part represents the current production equivalent with updated packaging designation (NOPB indicates no lead plating).

LP2988AIM-5.0/NOPB and LP2987IM-5.0/NOPB are active alternatives from Texas Instruments with equivalent performance characteristics and ROHS3 compliance. These parts maintain full parametric compatibility with the obsolete LP2988IM-5.0.

LP2986AIM-5.0/NOPB provides the highest current inventory availability (5200 units) while maintaining all electrical and mechanical specifications. This part is suitable for applications requiring immediate procurement.

LP2986IM-5.0/NOPB, manufactured by National Semiconductor, is a parametric equivalent with active status. Compliance certifications are not specified for this variant.

Frequently Asked Questions (FAQ)

Q: Can LP2988IM-5.0/NOPB be used as a direct replacement for LP2988IM-5.0?

A: Yes. Both parts deliver identical electrical performance: 5V fixed output, 200mA current capability, 0.35V dropout voltage at full load, and 8-SOIC packaging. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). The /NOPB designation indicates updated packaging without lead plating.

Q: What is the difference between LP2988AIM-5.0/NOPB and LP2987IM-5.0/NOPB?

A: Both parts are parametric equivalents with identical electrical specifications and 8-SOIC packaging. The difference lies in the base part number designation (LP2988A vs. LP2987), which reflects internal design variants. All electrical and mechanical parameters remain equivalent for substitution purposes.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use the 8-SOIC package with 0.154" width (3.90mm), ensuring mechanical and electrical compatibility with existing PCB designs. No layout modifications are required.

Q: Which substitute part should be selected for new designs?

A: LP2988IM-5.0/NOPB is recommended for new designs, as it maintains the original part number lineage with active production status and ROHS3 compliance. Alternatively, LP2986AIM-5.0/NOPB offers superior inventory availability.

Q: Is RoHS compliance a factor in part selection?

A: RoHS compliance status is provided for reference. LP2988IM-5.0/NOPB, LP2988AIM-5.0/NOPB, LP2987IM-5.0/NOPB, and LP2986AIM-5.0/NOPB are all ROHS3 compliant. LP2986IM-5.0/NOPB compliance status is not specified in available documentation.

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