LP3852ES-2.5/NOPB Equivalent & Substitute Parts

Part Overview

The LP3852ES-2.5/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This Surface Mount device delivers 1.5A output current at a fixed 2.5V output voltage with a maximum dropout voltage of 0.38V at full load. The part is classified as Active status and is ROHS3 compliant, making it suitable for modern electronics requiring regulated power delivery in compact form factors.

Substitute parts are necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility is required across manufacturing locations. The parts listed below maintain electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Output Voltage (Fixed)	2.5V	V
Output Current	1.5A	A
Input Voltage (Max)	7V	V
Dropout Voltage (Max)	0.38V @ 1.5A	V
Quiescent Current	3 mA	mA
Operating Temperature Range	-40°C to 125°C	°C
Package Type	TO-263 (DDPAK-5)	—
Protection Features	Over Current, Over Temperature, Short Circuit	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the LP3852ES-2.5/NOPB is determined by the following critical parameters:

Fixed output voltage of 2.5V
Output current capability of 1.5A minimum
Maximum input voltage of 7V
TO-263 (DDPAK-5) package compatibility
Positive output configuration with Enable control feature
Over Current, Over Temperature, and Short Circuit protection

All substitute parts listed maintain these core electrical specifications and mechanical package requirements. Variations in dropout voltage, quiescent current, and supply current do not disqualify substitution when the primary part is unavailable, provided the application design accommodates these differences within acceptable operating margins.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Dropout Voltage @ 1.5A	Quiescent Current	Supply Current (Max)	Product Status	Inventory
LP3852ES-2.5/NOPB	Texas Instruments	2.5V	1.5A	0.38V	3 mA	10 mA	Active	1570 Pcs
LP3855ES-2.5/NOPB	Texas Instruments	2.5V	1.5A	0.38V	3 mA	10 mA	Active	699 Pcs
LP3872ES-2.5/NOPB	Texas Instruments	2.5V	1.5A	0.55V	5 mA	15 mA	Active	2246 Pcs
LP3962ES-2.5/NOPB	National Semiconductor	2.5V	1.5A	0.55V	9 mA	15 mA	Active	10250 Pcs
LP3965ES-2.5/NOPB	Texas Instruments	2.5V	1.5A	0.55V	9 mA	15 mA	Active	1043 Pcs
LP3965ES-2.5	Texas Instruments	2.5V	1.5A	0.55V	9 mA	15 mA	Last Time Buy	2300 Pcs

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

LP3855ES-2.5/NOPB and LP3872ES-2.5/NOPB are both Active status parts from Texas Instruments with full ROHS3 compliance. LP3855ES-2.5/NOPB maintains identical electrical performance to the LP3852ES-2.5/NOPB with 0.38V dropout voltage and 3 mA quiescent current. LP3872ES-2.5/NOPB offers higher inventory availability (2246 Pcs) with acceptable parameter variations (0.55V dropout, 5 mA quiescent current).

Secondary Substitutes (Inventory Availability)

LP3962ES-2.5/NOPB from National Semiconductor provides the highest inventory level (10250 Pcs) and maintains all critical electrical specifications. This part is suitable when supply chain flexibility is prioritized. LP3965ES-2.5/NOPB from Texas Instruments offers Active status with ROHS3 compliance and adequate inventory (1043 Pcs).

End-of-Life Consideration

LP3965ES-2.5 carries Last Time Buy status and should not be selected for new production designs despite adequate inventory. This designation indicates the manufacturer will discontinue production, limiting long-term supply reliability.

Frequently Asked Questions (FAQ)

Q: Can LP3872ES-2.5/NOPB replace LP3852ES-2.5/NOPB directly?

A: Yes. Both parts share identical output voltage (2.5V), output current (1.5A), and package (TO-263 DDPAK-5). The LP3872ES-2.5/NOPB has higher dropout voltage (0.55V vs 0.38V) and quiescent current (5 mA vs 3 mA). Applications with adequate input voltage margin and power budget tolerance can use this substitute without circuit modification.

Q: What is the difference between LP3965ES-2.5/NOPB and LP3965ES-2.5?

A: Both parts are electrically identical with 2.5V output and 1.5A current rating. The primary difference is product status: LP3965ES-2.5/NOPB is Active, while LP3965ES-2.5 is Last Time Buy. For new designs, select the Active variant (LP3965ES-2.5/NOPB).

Q: Are all substitute parts in the same package?

A: Yes. All listed parts use TO-263 (DDPAK-5) package with identical pinout and mechanical dimensions. Direct PCB layout compatibility is maintained across all substitutes.

Q: Which substitute has the lowest power dissipation?

A: LP3855ES-2.5/NOPB and LP3852ES-2.5/NOPB both feature 0.38V dropout voltage and 3 mA quiescent current, resulting in the lowest power dissipation. Other substitutes with 0.55V dropout and higher quiescent current will dissipate more power under identical load conditions.

Q: Can I use LP3962ES-2.5/NOPB from National Semiconductor in a Texas Instruments design?

A: Yes. The LP3962ES-2.5/NOPB meets all electrical and mechanical compatibility requirements. Both manufacturers' parts share identical output specifications, protection features, and package format. Verify compliance documentation for your specific application requirements.

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