Equivalent & Substitute Parts for LP3855ES-2.5 Linear Voltage Regulator

Part Overview

The Texas Instruments LP3855ES-2.5 is a linear voltage regulator IC, categorized under Power Management (PMIC), packaged in a TO-263 (DDPAK-5) surface-mount format. It delivers a fixed positive 2.5V output at up to 1.5A and includes enable and standard protection features. This product is obsolete, necessitating the identification of equivalent and substitute models to ensure design continuity, inventory management, and compliance needs.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	7V
Voltage - Output (Min/Fixed)	2.5V
Voltage Dropout (Max)	0.38V @ 1.5A
Current - Output	1.5A
Current - Quiescent (Iq)	3 mA
Current - Supply (Max)	10 mA
PSRR	73dB ~ 57dB (120Hz)
Control Features	Enable
Protection Features	Over Current, Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
Supplier Device Package	TO-263 (DDPAK-5)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)
REACH Status	REACH Unaffected
ECCN	EAR99

Substitute Part Grouping Explanation

Substitute and equivalent linear voltage regulator ICs are identified strictly using the following key parameters: output configuration (positive), output type (fixed), number of regulators (1), maximum input voltage (7V), fixed output voltage (2.5V), maximum dropout voltage, maximum output current (1.5A), quiescent and supply currents, PSRR, enable and protection features, operating temperature range, mounting type, package style, and compliance attributes (RoHS, REACH, MSL). Only parts matching or exceeding these parameters are included.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Output Config.	Output Type	Regulators	V_IN Max	V_OUT Fixed	Dropout Voltage (Max)	I_OUT Max	Iq	Isupply Max	PSRR	Enable	Protection	Temp Range	Mount Type	Package / Case	Supplier Device Package	RoHS	MSL	REACH	ECCN
LP3855ES-2.5	Texas Instruments	Obsolete	Positive	Fixed	1	7V	2.5V	0.38V @ 1.5A	1.5A	3 mA	10 mA	73dB ~ 57dB (120Hz)	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	Non-compliant	3	Unaffected	EAR99
LP3855ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	0.38V @ 1.5A	1.5A	3 mA	10 mA	73dB ~ 57dB (120Hz)	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3	Unaffected	EAR99
LP3852ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	0.38V @ 1.5A	1.5A	3 mA	10 mA	73dB ~ 57dB (120Hz)	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3	Unaffected	EAR99
LP3872ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	0.55V @ 1.5A	1.5A	5 mA	15 mA	73dB ~ 57dB (120Hz)	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3	Affected	EAR99
LP3875ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	0.55V @ 1.5A	1.5A	5 mA	15 mA	73dB ~ 57dB (120Hz)	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3	Unaffected	EAR99
LP3962ES-2.5/NOPB	National Semiconductor	Active	Positive	Fixed	1	7V	2.5V	0.55V @ 1.5A	1.5A	9 mA	15 mA	-	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	-	-	-	EAR99
LP3965ES-2.5/NOPB	Texas Instruments	Active	Positive	Fixed	1	7V	2.5V	0.55V @ 1.5A	1.5A	9 mA	15 mA	-	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3	Unaffected	EAR99
LP3965ES-2.5	Texas Instruments	Last Time Buy	Positive	Fixed	1	7V	2.5V	0.55V @ 1.5A	1.5A	9 mA	15 mA	-	Yes	OC, OT, SC	-40°C ~ 125°C	Surface Mount	TO-263-6, D2PAK (5 Leads + Tab), TO-263BA	TO-263 (DDPAK-5)	ROHS3 Compliant	3	Unaffected	EAR99

Engineering Selection Recommendations

For projects requiring compliance with current environmental and regulatory standards, select substitute linear voltage regulators such as LP3855ES-2.5/NOPB, LP3852ES-2.5/NOPB, LP3872ES-2.5/NOPB, LP3875ES-2.5/NOPB, LP3962ES-2.5/NOPB, and LP3965ES-2.5/NOPB, which meet or exceed RoHS3 compliance and maintain matching key electrical, thermal, and mechanical parameters. Ensure inventory suitability and product status (active) for long-term availability.

Frequently Asked Questions (FAQ)

Q1: What electrical parameters must match for a substitute linear voltage regulator?
A1: Substitute parts must have the same output configuration (positive), fixed output voltage (2.5V), number of regulators (1), maximum input voltage (7V), equal or lower dropout voltage, and output current (1.5A).

Q2: Is package compatibility important for replacement?
A2: Yes, all listed substitutes use the TO-263-6, D2PAK (5 Leads + Tab), TO-263BA package, ensuring compatibility with automated and manual assembly processes designed for DDPAK-5.

Q3: What compliance and certification considerations apply?
A3: Substitutes with RoHS3 and REACH compliance facilitate adherence to global regulations. Legacy main part LP3855ES-2.5 is RoHS non-compliant, whereas listed equivalents provide RoHS3 compliant options.

Q4: Are there feature differences among substitutes?
A4: All listed alternatives maintain enable functionality and protection features including over-current, over-temperature, and short-circuit, meeting standard operational requirements.

Q5: How does product status affect substitute selection?
A5: Choosing substitutes with active status ensures continued availability and manufacturability. Obsolete or last time buy status impacts long-term planning for designs utilizing these regulators.

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