LP2992IM5-2.5/NOPB Equivalent & Substitute Parts

Part Overview

The LP2992IM5-2.5/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 is classified as Last Time Buy, indicating discontinued production. The regulator features integrated protection against overcurrent, overtemperature, and short circuit conditions, with an enable control feature for power management applications.

Finding equivalent and substitute parts is necessary due to the Last Time Buy status. Alternative models provide continued availability while maintaining functional compatibility for 2.5V regulated power supply designs.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	250mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.85V @ 250mA
Quiescent Current	95 µA
Package	SOT-23-5 (SC-74A)
Protection Features	Over Current, Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C
Control Features	Enable

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Fixed output voltage of 2.5V
Output current rating of 250mA or higher
SOT-23-5 package compatibility
Enable control feature
Operating temperature range of -40°C to 125°C
Protection against overcurrent, overtemperature, and short circuit

Parametric Equivalents maintain identical electrical specifications and are direct pin-for-pin replacements:

LP2992AIM5-2.5
LP2992AIM5-2.5/NOPB
LP2992IM5-2.5
LP2992IM5X-2.5/NOPB

Manufacturer Recommended Substitutes provide functional equivalence with variations in specific parameters:

TPS7A2425DBVR: Lower output current (200mA), improved dropout voltage (0.25V @ 200mA), lower quiescent current (4.5 µA)
LP2985-25DBVR, LP2985-25DBVT, LP2985A-25DBVR, LP2985A-25DBVT: Reduced output current (150mA), compatible protection features
REG102NA-2.5/250: Matches 250mA output current, lower input voltage maximum (10V), higher quiescent current (500 µA), reduced operating temperature range (-40°C ~ 85°C)

Parameter Comparison

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

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents): LP2992AIM5-2.5/NOPB is the preferred choice among parametric equivalents. It maintains identical electrical specifications and is currently in Active product status, ensuring long-term availability. This part is suitable for designs requiring no circuit modifications.

For Active Product Status with Full Current Capability: TPS7A2425DBVR provides Active status with improved performance characteristics. While output current is reduced to 200mA, this device offers superior dropout voltage (0.25V vs. 0.85V) and significantly lower quiescent current (4.5 µA vs. 95 µA). Selection is appropriate for applications where the 200mA output current is sufficient and power efficiency is prioritized.

For Reduced Current Applications: LP2985A-25DBVR offers Active status with 150mA output current capability. This part is suitable for designs where current requirements do not exceed 150mA, providing continued availability with established product maturity.

For Maximum Input Voltage Tolerance: TPS7A2425DBVR supports 18V maximum input voltage compared to 16V for other alternatives, providing additional design margin in applications with variable input sources.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels (MSL 1 - Unlimited). All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Frequently Asked Questions (FAQ)

Q: Can LP2992AIM5-2.5/NOPB directly replace LP2992IM5-2.5/NOPB? A: Yes. LP2992AIM5-2.5/NOPB is a parametric equivalent with identical electrical specifications, package, and pin configuration. The primary difference is Active product status versus Last Time Buy, making it the preferred long-term replacement.

Q: What is the difference between TPS7A2425DBVR and LP2992IM5-2.5/NOPB? A: TPS7A2425DBVR reduces output current from 250mA to 200mA but improves dropout voltage from 0.85V to 0.25V and reduces quiescent current from 95 µA to 4.5 µA. Selection depends on whether your application requires the full 250mA output current. Both maintain SOT-23-5 packaging and 2.5V fixed output.

Q: Why would I choose LP2985A-25DBVR over LP2992AIM5-2.5/NOPB? A: LP2985A-25DBVR is appropriate only if your design requires maximum 150mA output current. For applications requiring 250mA, LP2992AIM5-2.5/NOPB is the correct choice. Both share identical quiescent current and protection features.

Q: Is REG102NA-2.5/250 suitable as a substitute? A: REG102NA-2.5/250 matches the 250mA output current and 2.5V fixed output voltage. However, it has a lower maximum input voltage (10V vs. 16V) and higher quiescent current (500 µA vs. 95 µA). Selection requires verification that your input voltage does not exceed 10V and that the higher quiescent current is acceptable for your power budget.

Q: Are all substitute parts available in the same packaging? A: All parts use SOT-23-5 (SC-74A) package for surface mount compatibility. Packaging options vary between Cut Tape & Digi-Reel, Cut Tape only, and Tape & Reel formats. Verify your procurement requirements for tape format and reel specifications.

Q: Do all substitute parts support the Enable control feature? A: Yes. All listed substitute parts include Enable control functionality, maintaining design compatibility with circuits utilizing this feature for power management.

Q: What is the operating temperature range for all substitutes? A: LP2992IM5-2.5/NOPB and all LP2992 variants operate from -40°C to 125°C. LP2985 series parts also operate -40°C to 125°C. REG102NA-2.5/250 has a reduced range of -40°C to 85°C. TPS7A2425DBVR operates -40°C to 125°C (TJ).

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