Equivalent & Substitute Parts for LP3856ES-2.5

Part Overview

The LP3856ES-2.5 is a Power Management (PMIC) linear voltage regulator IC manufactured by Texas Instruments. It features a fixed positive output of 2.5V, supports up to 3A output current, and comes in a surface-mount TO-263 (DDPAK-5) package. The device integrates protection features such as over current, over temperature, and short circuit. Its Part Status is listed as Obsolete. As a result, sourcing direct replacements is necessary for continued support, redesign, or repair of existing products using this part.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Description	Output Configuration	Output Type	Number of Regulators	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Voltage Dropout (Max)	Current - Output	Current - Quiescent (Iq)	Current - Supply (Max)	PSRR	Control Features	Protection Features	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	ECCN
LP3856ES-2.5	Texas Instruments	Power Management (PMIC)	IC REG LIN 2.5V 3A DDPAK/TO263-5	Positive	Fixed	1	7V	2.5V	0.6V @ 3A	3A	4 mA	10 mA	73dB ~ 57dB (120Hz)	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	RoHS non-compliant	3 (168 Hours)	REACH Unaffected	EAR99

Substitute Part Grouping Explanation

Substitute and equivalent parts for the LP3856ES-2.5 are strictly selected based on matching electrical characteristics, mechanical package, thermal parameters, and control/protection features. Key parameters allowing substitution in this product category are:

Output Configuration: Positive, Fixed
Number of Regulators: 1
Maximum Input Voltage: 7V
Fixed Output Voltage: 2.5V
Maximum Output Current: 3A
Voltage Dropout (Max): 0.6V @ 3A or 1.2V @ 3A
Control Features: Enable
Protection Features: Over Current, Over Temperature, Short Circuit
Operating Temperature: -40°C ~ 125°C
Mounting Type and Package: Surface Mount, TO-263 (DDPAK-5)
Electrical Compliance: MSL, RoHS, REACH, ECCN

Only parts strictly matching these criteria are considered as equivalent or substitute options.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Output Configuration	Output Type	Number of Regulators	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Voltage Dropout (Max)	Current - Output	Current - Quiescent (Iq)	Current - Supply (Max)	PSRR	Control Features	Protection Features	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	ECCN
LP3856ES-2.5	Texas Instruments	Obsolete	Positive	Fixed	1	7V	2.5V	0.6V @ 3A	3A	4 mA	10 mA	73dB ~ 57dB (120Hz)	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	RoHS non-compliant	3 (168 Hours)	REACH Unaffected	EAR99
LP3856ES-2.5/NOPB	National Semiconductor	Active	Positive	Fixed	1	7V	2.5V	0.6V @ 3A	3A	4 mA	10 mA	73dB ~ 57dB (120Hz)	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	-	-	-	EAR99
LP3853ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	0.6V @ 3A	3A	4 mA	10 mA	73dB ~ 57dB (120Hz)	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3 (168 Hours)	REACH Unaffected	EAR99
LP3873ES-2.5/NOPB	National Semiconductor	Active	Positive	Fixed	1	7V	2.5V	1.2V @ 3A	3A	9 mA	15 mA	73dB ~ 57dB (120Hz)	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	-	-	-	EAR99
LP3876ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	1.2V @ 3A	3A	5 mA	15 mA	-	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3 (168 Hours)	REACH Unaffected	EAR99
LP3963ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	1.2V @ 3A	3A	9 mA	15 mA	-	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3 (168 Hours)	REACH Unaffected	EAR99
LP3966ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	1.2V @ 3A	3A	9 mA	15 mA	-	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3 (168 Hours)	REACH Unaffected	EAR99
LP3853ES-2.5	Texas Instruments	Last Time Buy	Positive	Fixed	1	7V	2.5V	0.6V @ 3A	3A	4 mA	10 mA	73dB ~ 57dB (120Hz)	Enable	Over Current, Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3 (168 Hours)	REACH Affected	EAR99

Engineering Selection Recommendations

The LP3856ES-2.5 is classified as Obsolete. For projects where RoHS compliance is mandatory, select alternatives like LP3853ES-2.5/NOPB, LP3876ES-2.5/NOPB, LP3963ES-2.5/NOPB, or LP3966ES-2.5/NOPB, which are ROHS3 Compliant. All presented substitute parts share the same mounting method, package, and environmental ratings (MSL). For supply continuity, select devices listed as Active or Last Time Buy.

Frequently Asked Questions (FAQ)

Q1: What are the most critical parameters for substituting a linear voltage regulator in this category?
A1: Output configuration, fixed output voltage, maximum output current, dropout voltage, package type, thermal performance, control features, protection features, and electrical/environmental compliance are the key parameters.

Q2: Are all listed substitute parts pin-compatible with the LP3856ES-2.5?
A2: All substitute parts use the same surface-mount TO-263-6, D2PAK (5 Leads + Tab), TO-263BA package and Supplier Device Package (TO-263/DDPAK-5), enabling direct pin compatibility.

Q3: How does RoHS status affect substitute selection?
A3: For applications requiring RoHS compliance, only select parts designated as ROHS3 Compliant.

Q4: Can the dropout voltage differences affect substitution?
A4: Substitute parts feature a maximum dropout voltage of either 0.6V or 1.2V at 3A, both specified in the input. Selection can be made based on these defined values.

Q5: Are all substitute parts suitable for the same operating temperature range?
A5: All listed devices support an operating temperature range of -40°C to 125°C.

Q6: Do all listed parts have the same protection and control features?
A6: All substitute devices include Enable control and protection against Over Current, Over Temperature, and Short Circuit as specified.

Q7: Is the Moisture Sensitivity Level consistent across options?
A7: All listed alternate parts have a Moisture Sensitivity Level (MSL) of 3 (168 Hours).

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