LP2980IM5-2.5 Equivalent & Substitute Parts

Part Overview

The LP2980IM5-2.5 is a linear voltage regulator IC from Texas Instruments, delivering a fixed 2.5V 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. The device provides positive fixed output regulation with integrated enable control and comprehensive protection features including over-current, over-temperature, and short-circuit protection.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	2.5V
Voltage - Input (Max)	16V
Current - Output	50mA
Voltage Dropout (Max)	0.22V @ 50mA
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
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

Substitute parts for the LP2980IM5-2.5 are grouped into two categories based on electrical and mechanical compatibility:

Direct Equivalents (Texas Instruments LP2980 Series): Parts LP2980IM5-2.5/NOPB, LP2980AIM5-2.5/NOPB, LP2980AIM5X-2.5/NOPB, and LP2980IM5X-2.5/NOPB maintain identical electrical specifications across all critical parameters: 2.5V fixed output, 50mA output current, 0.22V maximum dropout voltage, 16V maximum input voltage, SOT-23-5 package, and identical protection and control features. Substitution within this group is determined by product status and packaging format (Tape & Reel, Cut Tape, or Digi-Reel).

Parametric Equivalent (Microchip MIC5225-2.5YM5-TR): The MIC5225-2.5YM5-TR from Microchip Technology shares the same output voltage (2.5V), input voltage rating (16V), package type (SOT-23-5), operating temperature range (-40°C ~ 125°C), and control/protection feature categories. The key difference is increased output current capability (150mA versus 50mA) and higher dropout voltage (0.45V @ 150mA versus 0.22V @ 50mA). This part functions as a higher-current alternative where the application can tolerate increased dropout voltage.

Parameter Comparison

Parameter	LP2980IM5-2.5	LP2980IM5-2.5/NOPB	LP2980AIM5-2.5/NOPB	LP2980AIM5X-2.5/NOPB	LP2980IM5X-2.5/NOPB	MIC5225-2.5YM5-TR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology
Voltage - Output (Min/Fixed)	2.5V	2.5V	2.5V	2.5V	2.5V	2.5V
Voltage - Input (Max)	16V	16V	16V	16V	16V	16V
Current - Output	50mA	50mA	50mA	50mA	50mA	150mA
Voltage Dropout (Max)	0.22V @ 50mA	0.22V @ 50mA	0.22V @ 50mA	0.22V @ 50mA	0.22V @ 50mA	0.45V @ 150mA
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-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	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Reverse Polarity
Control Features	Enable	Enable	Enable	Enable	Enable	Enable
Product Status	Obsolete	Obsolete	Active	Last Time Buy	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For direct replacement of the LP2980IM5-2.5, select LP2980IM5X-2.5/NOPB or LP2980AIM5-2.5/NOPB. Both parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. LP2980IM5X-2.5/NOPB is available in Tape & Reel packaging with the highest inventory (3447 pcs), while LP2980AIM5-2.5/NOPB is available in Cut Tape & Digi-Reel format with 1709 pcs in stock.

For applications requiring higher output current capacity, the MIC5225-2.5YM5-TR from Microchip Technology provides 150mA output current in the same SOT-23-5 package. This substitution is valid where the increased dropout voltage (0.45V @ 150mA) does not violate circuit design margins. The MIC5225-2.5YM5-TR is active and ROHS3 compliant.

Avoid LP2980AIM5X-2.5/NOPB due to Last Time Buy status, which indicates limited future availability.

Frequently Asked Questions (FAQ)

Q: Can LP2980IM5-2.5/NOPB directly replace LP2980IM5-2.5?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The primary difference is packaging format: LP2980IM5-2.5/NOPB is supplied in Tape & Reel format, while the original part number does not specify packaging. Both maintain SOT-23-5 package geometry and identical electrical performance.

Q: What is the difference between LP2980AIM5-2.5/NOPB and LP2980IM5X-2.5/NOPB?

A: Both parts are parametrically equivalent with identical electrical specifications. The difference is product status and packaging: LP2980AIM5-2.5/NOPB is Active with Cut Tape & Digi-Reel packaging, while LP2980IM5X-2.5/NOPB is Active with Tape & Reel packaging. Selection depends on procurement and assembly requirements.

Q: Can MIC5225-2.5YM5-TR replace LP2980IM5-2.5 in all applications?

A: MIC5225-2.5YM5-TR is a parametric equivalent suitable for applications where the 50mA output current of the original part is insufficient. The increased output current (150mA) and higher dropout voltage (0.45V @ 150mA versus 0.22V @ 50mA) must be evaluated against circuit design requirements. Pin-to-pin compatibility and SOT-23-5 package geometry are maintained.

Q: Why is the original LP2980IM5-2.5 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. Active alternatives within the LP2980 series (LP2980IM5X-2.5/NOPB and LP2980AIM5-2.5/NOPB) provide identical electrical and mechanical specifications with continued manufacturer support.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The original LP2980IM5-2.5 is RoHS non-compliant. Compliance verification is required for applications subject to RoHS regulations.

Q: What is the difference in dropout voltage between LP2980 and MIC5225 variants?

A: LP2980 variants maintain 0.22V maximum dropout at 50mA output current. MIC5225-2.5YM5-TR specifies 0.45V maximum dropout at its rated 150mA output current. This difference must be considered in low-input-voltage applications where headroom is limited.

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