LP3852ES-2.5 Equivalent & Substitute Parts

Part Overview

The LP3852ES-2.5 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 2.5V output at 1.5A maximum current in a TO-263 (DDPAK-5) surface mount package. The main part number is currently listed as Obsolete, with 5,746 units in stock. Due to its obsolete status, identifying active equivalent and substitute parts is essential for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	1.5A
Input Voltage (Max)	7V
Voltage Dropout (Max)	0.38V @ 1.5A
Quiescent Current (Iq)	3 mA
Operating Temperature Range	-40°C to 125°C
Package / Case	TO-263-6, D2PAK (5 Leads + Tab)
Mounting Type	Surface Mount
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable

Substitute Part Grouping Explanation

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

Fixed output voltage of 2.5V
Output current capability of 1.5A
Maximum input voltage of 7V
TO-263 (DDPAK-5) package compatibility
Surface mount configuration
Operating temperature range of -40°C to 125°C
Enable control feature
Over current, over temperature, and short circuit protection

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents: Parts with identical electrical specifications and the same base product number variant (LP3852ES-2.5/NOPB).

Parametric Equivalents: Parts with the same output voltage, current rating, package, and protection features but different manufacturers or slightly different quiescent current and supply current specifications (LP3855ES-2.5/NOPB, LP3872ES-2.5/NOPB, LP3875ES-2.5/NOPB, LP3962ES-2.5/NOPB, LP3965ES-2.5/NOPB, LP3965ES-2.5).

Parameter Comparison

Part Number	Manufacturer	Status	Output Voltage	Output Current	Dropout @ 1.5A	Iq (mA)	Supply Current (Max)	Package	RoHS	Inventory
LP3852ES-2.5	Texas Instruments	Obsolete	2.5V	1.5A	0.38V	3	10 mA	TO-263 (DDPAK-5)	Non-compliant	5,746
LP3852ES-2.5/NOPB	Texas Instruments	Active	2.5V	1.5A	0.38V	3	10 mA	TO-263 (DDPAK-5)	ROHS3 Compliant	1,570
LP3855ES-2.5/NOPB	Texas Instruments	Active	2.5V	1.5A	0.38V	3	10 mA	TO-263 (DDPAK-5)	ROHS3 Compliant	699
LP3872ES-2.5/NOPB	Texas Instruments	Active	2.5V	1.5A	0.55V	5	15 mA	TO-263 (DDPAK-5)	ROHS3 Compliant	2,246
LP3875ES-2.5/NOPB	Texas Instruments	Active	2.5V	1.5A	0.55V	5	15 mA	TO-263 (DDPAK-5)	ROHS3 Compliant	900
LP3962ES-2.5/NOPB	National Semiconductor	Active	2.5V	1.5A	0.55V	9	15 mA	TO-263 (DDPAK-5)	Not specified	10,250
LP3965ES-2.5/NOPB	Texas Instruments	Active	2.5V	1.5A	0.55V	9	15 mA	TO-263 (DDPAK-5)	ROHS3 Compliant	1,043
LP3965ES-2.5	Texas Instruments	Last Time Buy	2.5V	1.5A	0.55V	9	15 mA	TO-263 (DDPAK-5)	ROHS3 Compliant	2,300

Engineering Selection Recommendations

Primary Recommendation: LP3852ES-2.5/NOPB is the direct equivalent with Active product status and ROHS3 compliance. It maintains identical electrical specifications to the obsolete LP3852ES-2.5 while offering improved regulatory compliance and current availability (1,570 units in stock).

Secondary Recommendations: LP3855ES-2.5/NOPB and LP3872ES-2.5/NOPB are parametric equivalents with Active status. Both maintain the 2.5V output and 1.5A current rating in the same TO-263 package. LP3872ES-2.5/NOPB offers higher inventory (2,246 units) and is suitable for applications where slightly higher dropout voltage (0.55V vs. 0.38V) and quiescent current (5 mA vs. 3 mA) are acceptable.

Alternative Options: LP3965ES-2.5/NOPB and LP3965ES-2.5 provide parametric equivalence with higher quiescent current (9 mA) and dropout voltage (0.55V). LP3965ES-2.5/NOPB is Active with ROHS3 compliance, while LP3965ES-2.5 is Last Time Buy status. LP3962ES-2.5/NOPB from National Semiconductor offers the highest inventory (10,250 units) and is functionally equivalent, though RoHS status is not specified.

Compliance Consideration: The original LP3852ES-2.5 is RoHS non-compliant. All recommended substitutes are ROHS3 compliant or have unspecified status, supporting transition to compliant designs.

Frequently Asked Questions (FAQ)

Q: Can LP3852ES-2.5/NOPB be used as a direct replacement for LP3852ES-2.5?

A: Yes. LP3852ES-2.5/NOPB is the direct equivalent with identical electrical specifications (2.5V output, 1.5A current, 0.38V dropout at 1.5A, 3 mA quiescent current). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Pin configuration and package (TO-263 DDPAK-5) are identical.

Q: What is the difference between LP3852ES-2.5/NOPB and LP3872ES-2.5/NOPB?

A: Both deliver 2.5V at 1.5A in the same TO-263 package. LP3852ES-2.5/NOPB has lower dropout voltage (0.38V vs. 0.55V) and lower quiescent current (3 mA vs. 5 mA). LP3872ES-2.5/NOPB is suitable when these differences do not impact circuit performance and higher inventory availability is preferred.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the TO-263-6 (D2PAK with 5 Leads + Tab) surface mount package, ensuring PCB layout compatibility without redesign.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB suffix indicates "No Plumbum" (lead-free) packaging, reflecting RoHS compliance. Parts without this suffix may contain lead and are typically associated with older product lines or Last Time Buy status.

Q: Which substitute offers the best inventory availability?

A: LP3962ES-2.5/NOPB from National Semiconductor has the highest inventory at 10,250 units. It is functionally equivalent with 2.5V output, 1.5A current, and TO-263 package compatibility.

Q: Can I use LP3965ES-2.5 (Last Time Buy) in new designs?

A: LP3965ES-2.5 is functionally equivalent but carries Last Time Buy status, indicating limited future availability. For new designs, LP3965ES-2.5/NOPB (Active status) is preferred, or LP3852ES-2.5/NOPB for closest electrical match to the original part.

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