LP2992AIM5X-5.0 Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LP2992AIM5X-5.0 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications with 250mA current capacity in SOT-23-5 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device provides regulated 5V output from input voltages up to 16V with integrated protection features including over-current, over-temperature, and short-circuit protection.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	5V
Output Current	250mA
Input Voltage (Max)	16V
Dropout Voltage (Max)	0.85V @ 250mA
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

Substitute Part Grouping Explanation

Substitute parts for the LP2992AIM5X-5.0 are categorized based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Output voltage: 5V fixed
Package type: SOT-23-5 surface mount
Output configuration: Positive fixed regulator
Operating temperature range: -40°C to 125°C minimum
Protection features: Over-current and over-temperature protection

Parametric Equivalents (LP2992 series variants) maintain identical electrical specifications and differ only in packaging format or product status designation. These parts are direct replacements with no functional differences.

Manufacturer Recommended Alternatives provide equivalent 5V output in SOT-23-5 packaging but may differ in output current capacity, dropout voltage, quiescent current, or additional protection features. Selection depends on specific application current requirements and thermal performance needs.

Parameter Comparison

Part Number	Manufacturer	Output Current	Dropout Voltage	Quiescent Current	Product Status	RoHS Status
LP2992AIM5X-5.0	Texas Instruments	250mA	0.85V @ 250mA	95 µA	Obsolete	Non-compliant
LP2992AIM5-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	Active	ROHS3 Compliant
LP2992AIM5X-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	Active	ROHS3 Compliant
LP2992IM5-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	Active	ROHS3 Compliant
LP2992IM5X-5.0/NOPB	Texas Instruments	250mA	0.85V @ 250mA	95 µA	Active	ROHS3 Compliant
AP2210K-5.0TRG1	Diodes Incorporated	300mA	0.5V @ 300mA	180 µA	Active	ROHS3 Compliant
LD2985BM50R	STMicroelectronics	150mA	0.575V @ 150mA	150 µA	Active	ROHS3 Compliant
SPX3819M5-L-5-0/TR	MaxLinear, Inc.	500mA	0.7V @ 500mA	8 µA	Active	ROHS3 Compliant
SPX5205M5-L-5-0/TR	MaxLinear, Inc.	150mA	0.35V @ 150mA	5 µA	Active	RoHS Compliant

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents): LP2992AIM5-5.0/NOPB, LP2992AIM5X-5.0/NOPB, LP2992IM5-5.0/NOPB, and LP2992IM5X-5.0/NOPB are functionally identical to the obsolete LP2992AIM5X-5.0. All are active products with ROHS3 compliance. These parts are preferred for new designs and production transitions due to active product status and regulatory compliance.

Higher Current Capability: AP2210K-5.0TRG1 (Diodes Incorporated) provides 300mA output current with improved dropout voltage of 0.5V, suitable for applications requiring current headroom beyond the original 250mA specification. SPX3819M5-L-5-0/TR (MaxLinear) offers 500mA capacity with ultra-low quiescent current of 8 µA, ideal for battery-powered or low-power standby applications.

Lower Current Applications: LD2985BM50R (STMicroelectronics) and SPX5205M5-L-5-0/TR (MaxLinear) both provide 150mA output. SPX5205M5-L-5-0/TR features superior dropout voltage of 0.35V and minimal quiescent current of 5 µA, making it optimal for low-power designs. LD2985BM50R maintains compatibility with the full -40°C to 125°C temperature range.

Compliance Considerations: All substitute parts carry active product status and RoHS compliance certifications, addressing the obsolete and non-compliant status of the original LP2992AIM5X-5.0. Selection should align with application current requirements and thermal performance specifications.

Frequently Asked Questions (FAQ)

Q: Can I use LP2992AIM5-5.0/NOPB as a direct replacement for LP2992AIM5X-5.0? A: Yes. Both parts are Texas Instruments LP2992 regulators with identical electrical specifications: 5V output, 250mA current, 0.85V dropout voltage, and SOT-23-5 packaging. The primary difference is product status (active vs. obsolete) and RoHS compliance. LP2992AIM5-5.0/NOPB is the recommended replacement.

Q: What is the difference between LP2992AIM5X-5.0/NOPB and LP2992IM5X-5.0/NOPB? A: Both parts are electrically identical with 250mA output current and 0.85V dropout voltage. The difference lies in temperature grade designation within the part number. Both are active products with ROHS3 compliance and SOT-23-5 packaging.

Q: Can I substitute AP2210K-5.0TRG1 if my application only requires 200mA? A: Yes. AP2210K-5.0TRG1 provides 300mA output capacity, which exceeds the 200mA requirement. The part maintains 5V fixed output and SOT-23-5 packaging. The improved dropout voltage of 0.5V provides better performance than the original 0.85V specification.

Q: Is SPX5205M5-L-5-0/TR suitable for applications requiring 250mA? A: No. SPX5205M5-L-5-0/TR is rated for 150mA maximum output current, which is insufficient for 250mA applications. For 250mA requirements, use LP2992 series equivalents or AP2210K-5.0TRG1 (300mA).

Q: What are the temperature range limitations for substitute parts? A: LP2992 series variants, AP2210K-5.0TRG1, and LD2985BM50R all support -40°C to 125°C operation. SPX5205M5-L-5-0/TR operates from -40°C to 85°C, which is narrower. Verify application temperature requirements before selection.

Q: Are all substitute parts available in SOT-23-5 packaging? A: Yes. All listed substitute parts use SOT-23-5 (SC-74A) surface mount packaging, maintaining PCB layout compatibility with the original LP2992AIM5X-5.0.

Q: Which substitute offers the lowest quiescent current for battery-powered applications? A: SPX5205M5-L-5-0/TR provides the lowest quiescent current at 5 µA, followed by SPX3819M5-L-5-0/TR at 8 µA. Both are suitable for low-power standby applications, though SPX5205M5-L-5-0/TR is limited to 150mA output.

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