LP2980IM5-5.0 Equivalent & Substitute Parts

Part Overview

The LP2980IM5-5.0 is a linear voltage regulator IC manufactured by Texas Instruments, designed for positive fixed 5V output at 50mA in a SOT-23-5 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 5V output with integrated protection features including over-current, over-temperature, and short-circuit protection, suitable for low-power applications requiring stable voltage regulation.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	50mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.22V @ 50mA
Quiescent Current	95 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature Range	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LP2980IM5-5.0 are grouped into two categories based on parametric equivalence and manufacturer recommendation:

Parametric Equivalents (Texas Instruments LP2980/LP2982 Series): Parts that maintain identical or functionally equivalent electrical specifications including 5V fixed output, 50mA output current, 16V maximum input voltage, 0.22V dropout voltage at 50mA, 95 µA quiescent current, and SOT-23-5 packaging. These include LP2980AIM5-5.0, LP2980AIM5-5.0/NOPB, LP2980AIM5X-5.0/NOPB, LP2980IM5-5.0/NOPB, and LP2980IM5X-5.0/NOPB. The LP2982 series variants (LP2982AIM5-5.0/NOPB, LP2982AIM5X-5.0/NOPB, LP2982IM5-5.0/NOPB) are included as parametric equivalents despite slightly higher dropout voltage (0.33V @ 80mA) and lower PSRR (45dB vs 63dB), as they maintain the core 5V/50mA output specification and SOT-23-5 package.

Manufacturer Recommended Alternatives (STMicroelectronics LD2980 Series): Parts from STMicroelectronics (LD2980ABM50TR, LD2980CM50TR) that provide equivalent 5V/50mA output with SOT-23-5 packaging and matching input voltage range. These devices feature slightly higher quiescent current (150 µA vs 95 µA) and marginally different dropout voltage (0.225V @ 50mA) but maintain functional compatibility for the specified application parameters.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Dropout Voltage	Quiescent Current	PSRR	Package	Product Status	Inventory
LP2980IM5-5.0	Texas Instruments	5V	50mA	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Obsolete	4106 Pcs
LP2980AIM5-5.0	Texas Instruments	5V	50mA	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Last Time Buy	2735 Pcs
LP2980AIM5-5.0/NOPB	Texas Instruments	5V	50mA	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	17100 Pcs
LP2980AIM5X-5.0/NOPB	Texas Instruments	5V	50mA	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	35400 Pcs
LP2980IM5-5.0/NOPB	Texas Instruments	5V	50mA	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	13220 Pcs
LP2980IM5X-5.0/NOPB	Texas Instruments	5V	50mA	0.22V @ 50mA	95 µA	63dB (1kHz)	SOT-23-5	Active	4102 Pcs
LP2982AIM5-5.0/NOPB	Texas Instruments	5V	50mA	0.33V @ 80mA	95 µA	45dB (1kHz)	SOT-23-5	Active	1300 Pcs
LP2982AIM5X-5.0/NOPB	Texas Instruments	5V	50mA	0.33V @ 80mA	95 µA	45dB (1kHz)	SOT-23-5	Active	4100 Pcs
LP2982IM5-5.0/NOPB	Texas Instruments	5V	50mA	0.33V @ 80mA	95 µA	45dB (1kHz)	SOT-23-5	Active	3940 Pcs
LD2980ABM50TR	STMicroelectronics	5V	50mA	0.225V @ 50mA	150 µA	63dB (1kHz)	SOT-23-5	Active	18360 Pcs
LD2980CM50TR	STMicroelectronics	5V	50mA	0.225V @ 50mA	150 µA	63dB (1kHz)	SOT-23-5	Active	47801 Pcs

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete LP2980IM5-5.0, the following selection criteria apply:

Primary Recommendation: LP2980AIM5X-5.0/NOPB or LP2980IM5-5.0/NOPB from Texas Instruments. Both maintain identical electrical specifications (5V output, 50mA current, 0.22V dropout, 95 µA quiescent current, 63dB PSRR) and Active product status with substantial inventory availability (35400 Pcs and 13220 Pcs respectively). Both are ROHS3 compliant and REACH unaffected.

Secondary Recommendation: LD2980CM50TR from STMicroelectronics. This part provides equivalent 5V/50mA output with Active status and highest inventory availability (47801 Pcs). Quiescent current is higher at 150 µA, and dropout voltage is marginally lower at 0.225V @ 50mA. ROHS3 compliance and REACH unaffected status match the original part.

Alternative Consideration: LP2982 series variants (LP2982AIM5-5.0/NOPB, LP2982IM5-5.0/NOPB) maintain 5V/50mA output and SOT-23-5 packaging with Active status. These parts feature higher dropout voltage (0.33V @ 80mA) and lower PSRR (45dB), making them suitable only for applications where these parameter variations are acceptable.

Frequently Asked Questions (FAQ)

Q: Can LP2980AIM5-5.0/NOPB directly replace LP2980IM5-5.0?

A: Yes. Both parts maintain identical electrical specifications: 5V fixed output, 50mA output current, 0.22V dropout voltage at 50mA, 95 µA quiescent current, 63dB PSRR, and SOT-23-5 packaging. The primary difference is product status (Active vs Obsolete) and the /NOPB suffix indicating lead-free RoHS compliance.

Q: What is the difference between LP2980 and LP2982 series?

A: Both series provide 5V/50mA output in SOT-23-5 packaging. LP2982 variants feature higher dropout voltage (0.33V @ 80mA vs 0.22V @ 50mA) and lower PSRR (45dB vs 63dB). LP2982 is suitable for applications where these parameter variations do not impact performance.

Q: Are STMicroelectronics LD2980 parts compatible with Texas Instruments LP2980?

A: Yes, for the specified application parameters. LD2980ABM50TR and LD2980CM50TR provide equivalent 5V/50mA output with SOT-23-5 packaging and matching input voltage range. Quiescent current is higher (150 µA vs 95 µA), and dropout voltage is marginally lower (0.225V @ 50mA). These differences are within acceptable tolerance for most applications.

Q: What does the /NOPB suffix indicate?

A: The /NOPB suffix indicates lead-free (Pb-free) packaging compliant with RoHS directives. Parts without this suffix may contain lead and are subject to different handling and compliance requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original LP2980IM5-5.0.

Q: Which substitute part has the highest inventory availability?

A: LD2980CM50TR from STMicroelectronics has the highest inventory at 47801 Pcs, followed by LP2980AIM5X-5.0/NOPB at 35400 Pcs.

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