LP2992IM5X-2.5/NOPB Equivalent & Substitute Parts

Part Overview

The LP2992IM5X-2.5/NOPB is a linear voltage regulator IC from Texas Instruments, delivering a fixed 2.5V output at 250mA in a SOT-23-5 surface mount package. This device operates across an input voltage range of up to 16V with a maximum dropout voltage of 0.85V at full load current. The part is classified as Last Time Buy, indicating discontinued production. Equivalent and substitute parts are necessary to ensure design continuity and long-term supply chain reliability for applications requiring 2.5V regulation at 250mA output capacity.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Output Voltage (Fixed)	2.5V
Output Current	250mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.85V @ 250mA
Package / Case	SC-74A, SOT-753 (SOT-23-5)
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Substitution Criteria (Must Match):

Output voltage: 2.5V fixed
Package type: SOT-23-5 (SC-74A, SOT-753)
Surface mount configuration
Output configuration: Positive
Control features: Enable function
RoHS3 compliance

Secondary Compatibility Factors:

Output current capacity (250mA or higher)
Input voltage rating (16V or higher)
Dropout voltage performance
Operating temperature range (-40°C to 125°C or wider)
Protection features (Over Current, Over Temperature minimum)

Substitute parts are grouped into two categories: parametric equivalents with identical electrical specifications, and manufacturer-recommended alternatives with comparable or superior performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	Product Status	Packaging
LP2992IM5X-2.5/NOPB	Texas Instruments	250mA	16V	0.85V @ 250mA	95 µA	Last Time Buy	Cut Tape (CT)
LP2992AIM5-2.5/NOPB	Texas Instruments	250mA	16V	0.85V @ 250mA	95 µA	Active	Cut Tape (CT) & Digi-Reel®
LP2992IM5-2.5/NOPB	Texas Instruments	250mA	16V	0.85V @ 250mA	95 µA	Last Time Buy	Cut Tape (CT) & Digi-Reel®
LP2992IM5-2.5	Texas Instruments	250mA	16V	0.85V @ 250mA	95 µA	Last Time Buy	Cut Tape (CT)
LP2992AIM5-2.5	Texas Instruments	250mA	16V	0.85V @ 250mA	95 µA	Last Time Buy	Cut Tape (CT) & Digi-Reel®
TPS7A2425DBVR	Texas Instruments	200mA	18V	0.25V @ 200mA	4.5 µA	Active	Cut Tape (CT) & Digi-Reel®
LP2985-25DBVR	Texas Instruments	150mA	16V	0.58V @ 150mA	95 µA	Active	Cut Tape (CT) & Digi-Reel®
LP2985-25DBVT	Texas Instruments	150mA	16V	0.58V @ 150mA	95 µA	Active	Tape & Reel (TR)
LP2985A-25DBVR	Texas Instruments	150mA	16V	0.58V @ 150mA	95 µA	Active	Cut Tape (CT) & Digi-Reel®
LP2985A-25DBVT	Texas Instruments	150mA	16V	0.58V @ 150mA	95 µA	Last Time Buy	Cut Tape (CT)
REG102NA-2.5/250	Texas Instruments	250mA	10V	0.27V @ 250mA	500 µA	Last Time Buy	Tape & Reel (TR)

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement): LP2992AIM5-2.5/NOPB is the primary recommended substitute. It maintains identical electrical specifications to the LP2992IM5X-2.5/NOPB while offering Active product status and improved packaging availability (Cut Tape & Digi-Reel). This part is suitable for new designs and ongoing production.

LP2992IM5-2.5/NOPB and LP2992IM5-2.5 are parametric equivalents with identical performance but carry Last Time Buy status. These are suitable only for existing inventory management or legacy system support.

Active Alternatives with Enhanced Performance: TPS7A2425DBVR is an Active product offering superior performance characteristics: lower dropout voltage (0.25V vs. 0.85V), significantly reduced quiescent current (4.5 µA vs. 95 µA), and higher input voltage rating (18V vs. 16V). Output current is reduced to 200mA, making this suitable for applications requiring less than 250mA. PSRR performance is enhanced (75dB ~ 62dB vs. 45dB).

Reduced Current Alternatives: LP2985 series parts (LP2985-25DBVR, LP2985-25DBVT, LP2985A-25DBVR, LP2985A-25DBVT) are Active or Last Time Buy products with 150mA output current capacity. These are suitable for applications requiring lower current delivery. LP2985A variants are recommended over LP2985 variants where Active status is required.

Legacy Compatibility: REG102NA-2.5/250 maintains 250mA output current but operates with a maximum input voltage of 10V (vs. 16V) and exhibits higher quiescent current (500 µA). This part is Last Time Buy and suitable only for legacy system replacement.

Frequently Asked Questions (FAQ)

Q: Can LP2992AIM5-2.5/NOPB directly replace LP2992IM5X-2.5/NOPB? A: Yes. Both parts deliver identical electrical performance: 250mA output current, 2.5V fixed output, 0.85V dropout voltage at full load, and identical protection features. The primary difference is product status (Active vs. Last Time Buy) and packaging availability. LP2992AIM5-2.5/NOPB is recommended for new designs.

Q: What is the difference between TPS7A2425DBVR and LP2992IM5X-2.5/NOPB? A: TPS7A2425DBVR is an Active product with superior performance: 0.25V dropout voltage (vs. 0.85V), 4.5 µA quiescent current (vs. 95 µA), and 18V maximum input voltage (vs. 16V). However, output current is limited to 200mA. This part is suitable for applications requiring less than 250mA with improved efficiency and lower power dissipation.

Q: Can I use LP2985 series parts as substitutes? A: LP2985 series parts are compatible only for applications requiring 150mA or less output current. They share the same 2.5V output voltage, SOT-23-5 package, and operating temperature range. LP2985A-25DBVR is the recommended Active variant for new designs.

Q: What packaging options are available? A: Substitute parts are available in Cut Tape (CT), Cut Tape & Digi-Reel (CT & Digi-Reel), and Tape & Reel (TR) configurations. LP2992AIM5-2.5/NOPB offers both Cut Tape and Digi-Reel options, providing flexibility for different procurement and assembly requirements.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental and regulatory requirements of the original LP2992IM5X-2.5/NOPB.

Q: Which substitute should I choose for new production? A: LP2992AIM5-2.5/NOPB is the primary recommendation. It is an Active product with identical specifications and improved packaging availability. For applications requiring lower current (≤200mA) with enhanced efficiency, TPS7A2425DBVR is an alternative.

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