LP2980IM5X-5.0 Equivalent & Substitute Parts

Part Overview

The LP2980IM5X-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 50mA in SOT-23-5 surface mount packaging. This device is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The LP2980 series provides regulated 5V output with integrated protection features including over-current, over-temperature, and short-circuit protection, making it suitable for low-power applications requiring stable voltage regulation.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	5V
Output Current	50mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.22V @ 50mA
Quiescent Current	95 µA
Package Type	SOT-23-5 (SC-74A)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
PSRR	63dB (1kHz)

Substitute Part Grouping Explanation

Substitute parts for the LP2980IM5X-5.0 are classified based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

Critical Parameters for Substitution:

Fixed output voltage of 5V
Output current capability of 50mA minimum
Maximum input voltage of 16V or greater
SOT-23-5 package compatibility
Operating temperature range of -40°C to 125°C
Surface mount mounting type

Substitution Groups:

Group 1: Texas Instruments LP2980 Series (Parametric Equivalents) Parts LP2980AIM5-5.0, LP2980AIM5-5.0/NOPB, LP2980AIM5X-5.0/NOPB, LP2980IM5-5.0, LP2980IM5-5.0/NOPB, and LP2980IM5X-5.0/NOPB maintain identical electrical specifications with the main part. These differ only in product status and RoHS compliance designation. All share 0.22V dropout voltage at 50mA, 95 µA quiescent current, and 63dB PSRR at 1kHz.

Group 2: Texas Instruments LP2982 Series (Parametric Equivalents with Tolerance Variations) Parts LP2982AIM5-5.0/NOPB, LP2982AIM5X-5.0/NOPB, and LP2982IM5-5.0/NOPB provide 5V fixed output at 50mA in SOT-23-5 packaging. These parts exhibit slightly higher dropout voltage (0.33V @ 80mA), marginally higher quiescent current (95 µA), and reduced PSRR (45dB at 1kHz) compared to the LP2980 series. These variations remain within acceptable substitution parameters for most applications.

Group 3: STMicroelectronics LD2980 Series (Direct Manufacturer Alternative) Part LD2980ABM50TR from STMicroelectronics provides equivalent 5V fixed output at 50mA in SOT-23-5 packaging. This part exhibits 0.225V dropout voltage at 50mA and 150 µA quiescent current, with identical 63dB PSRR. Protection features include over-current and over-temperature (short-circuit protection not specified in provided data).

Parameter Comparison

Part Number	Manufacturer	Product Status	Output Voltage	Output Current	Dropout Voltage	Quiescent Current	PSRR (1kHz)	RoHS Status	Inventory (Pcs)
LP2980IM5X-5.0	Texas Instruments	Obsolete	5V	50mA	0.22V @ 50mA	95 µA	63dB	Non-compliant	89350
LP2980AIM5-5.0	Texas Instruments	Last Time Buy	5V	50mA	0.22V @ 50mA	95 µA	63dB	ROHS3 Compliant	2735
LP2980AIM5-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.22V @ 50mA	95 µA	63dB	ROHS3 Compliant	17100
LP2980AIM5X-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.22V @ 50mA	95 µA	63dB	ROHS3 Compliant	35400
LP2980IM5-5.0	Texas Instruments	Obsolete	5V	50mA	0.22V @ 50mA	95 µA	63dB	ROHS3 Compliant	4106
LP2980IM5-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.22V @ 50mA	95 µA	63dB	ROHS3 Compliant	13220
LP2980IM5X-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.22V @ 50mA	95 µA	63dB	ROHS3 Compliant	4102
LP2982AIM5-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.33V @ 80mA	95 µA	45dB	ROHS3 Compliant	1300
LP2982AIM5X-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.33V @ 80mA	95 µA	45dB	ROHS3 Compliant	4100
LP2982IM5-5.0/NOPB	Texas Instruments	Active	5V	50mA	0.33V @ 80mA	95 µA	45dB	ROHS3 Compliant	3940
LD2980ABM50TR	STMicroelectronics	Active	5V	50mA	0.225V @ 50mA	150 µA	63dB	ROHS3 Compliant	18360

Engineering Selection Recommendations

Primary Recommendation: LP2980AIM5X-5.0/NOPB or LP2980IM5X-5.0/NOPB

Both parts maintain identical electrical specifications to the LP2980IM5X-5.0 with active product status and ROHS3 compliance. LP2980AIM5X-5.0/NOPB offers the highest inventory availability (35,400 pcs) and is recommended as the first choice for new designs and procurement. LP2980IM5X-5.0/NOPB provides equivalent performance with lower inventory (4,102 pcs).

Secondary Recommendation: LP2980IM5-5.0/NOPB

This part provides identical electrical performance with active status and ROHS3 compliance. Inventory of 13,220 pcs supports sustained procurement. Selection between LP2980IM5X-5.0/NOPB and LP2980IM5-5.0/NOPB depends on packaging format requirements (tape & reel versus cut tape).

Alternative Recommendation: LP2982 Series (LP2982AIM5-5.0/NOPB, LP2982AIM5X-5.0/NOPB, LP2982IM5-5.0/NOPB)

The LP2982 series maintains 5V output and 50mA current capability with active status and ROHS3 compliance. Higher dropout voltage (0.33V @ 80mA) and reduced PSRR (45dB) are acceptable for applications not requiring the enhanced performance of the LP2980 series. Limited inventory (1,300 to 4,100 pcs) restricts long-term availability.

Cross-Manufacturer Alternative: LD2980ABM50TR (STMicroelectronics)

This part provides equivalent 5V output at 50mA with active status and ROHS3 compliance. Slightly higher quiescent current (150 µA versus 95 µA) and marginally lower dropout voltage (0.225V) represent minor performance variations. Inventory of 18,360 pcs supports procurement. Selection requires confirmation of cross-manufacturer compatibility in target application.

Frequently Asked Questions (FAQ)

Q: Can LP2980AIM5X-5.0/NOPB directly replace LP2980IM5X-5.0?

A: Yes. Both parts provide identical electrical specifications: 5V fixed output, 50mA current, 0.22V dropout voltage at 50mA, 95 µA quiescent current, and 63dB PSRR at 1kHz. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 compliant versus non-compliant). Mechanical compatibility is confirmed through identical SOT-23-5 packaging.

Q: What is the difference between LP2980IM5X-5.0/NOPB and LP2980IM5-5.0/NOPB?

A: Both parts provide identical electrical performance and active product status. The difference lies in packaging format: LP2980IM5X-5.0/NOPB is supplied in tape & reel format, while LP2980IM5-5.0/NOPB is available in cut tape & Digi-Reel format. Selection depends on assembly process requirements and procurement preferences.

Q: Are LP2982 series parts suitable substitutes for LP2980 series?

A: LP2982 series parts maintain 5V output and 50mA current capability in SOT-23-5 packaging. However, they exhibit higher dropout voltage (0.33V @ 80mA versus 0.22V @ 50mA) and reduced PSRR (45dB versus 63dB). These variations are acceptable for applications with relaxed performance requirements but may not be suitable for noise-sensitive circuits requiring superior power supply rejection.

Q: Can LD2980ABM50TR from STMicroelectronics replace Texas Instruments LP2980 parts?

A: LD2980ABM50TR provides equivalent 5V output at 50mA in SOT-23-5 packaging with comparable dropout voltage (0.225V @ 50mA) and PSRR (63dB). The primary difference is higher quiescent current (150 µA versus 95 µA). Cross-manufacturer substitution requires confirmation of application-specific compatibility, particularly regarding enable pin functionality and protection feature implementation.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB suffix indicates lead-free (Pb-free) packaging compliant with RoHS3 regulations. Parts with this designation are suitable for applications requiring RoHS compliance. Parts without this suffix may contain lead and are restricted in certain markets and applications.

Q: Why is the main part LP2980IM5X-5.0 marked as obsolete?

A: The LP2980IM5X-5.0 is classified as obsolete due to its non-compliant RoHS status. Active alternatives with identical electrical specifications and ROHS3 compliance are available, including LP2980AIM5X-5.0/NOPB and LP2980IM5X-5.0/NOPB, which should be used for new designs and ongoing procurement.

Q: What packaging formats are available for LP2980 substitutes?

A: Substitute parts are available in two packaging formats: Cut Tape (CT) & Digi-Reel and Tape & Reel (TR). All parts maintain SOT-23-5 (SC-74A) case configuration. Selection between formats depends on assembly equipment compatibility and procurement volume requirements.

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