LP3996SD-3333 Equivalent & Substitute Parts

Part Overview

The LP3996SD-3333 is a linear voltage regulator IC from Texas Instruments, configured as a positive fixed dual-output regulator delivering 150mA and 300mA outputs at 3.3V. The device is housed in a 10-WSON (3x3) package with exposed pad and operates across -40°C to 85°C. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	LP3996SD-3333
Product Status	Obsolete
Output Configuration	Positive Fixed
Number of Regulators	2
Output Voltage	3.3V
Current Output	150mA, 300mA
Input Voltage (Max)	6V
Dropout Voltage	0.22V @ 150mA, 0.55V @ 150mA
Quiescent Current	100 µA
Operating Temperature	-40°C to 85°C
Package	10-WFDFN Exposed Pad (10-WSON 3x3)
RoHS Status	Non-compliant
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the LP3996SD-3333 is determined by the following critical parameters:

Output voltage configuration (3.3V fixed output)
Dual-output regulator topology (2 independent outputs)
Current delivery capability (150mA and 300mA channels)
Maximum input voltage (6V or higher tolerance)
Dropout voltage performance
Surface mount package compatibility
Operating temperature range
Control features (Enable function)
Protection features (Over Temperature, Short Circuit)

Substitute parts are grouped into three categories: direct manufacturer equivalents with identical specifications, parametric equivalents with minor specification variations, and manufacturer-recommended alternatives from different vendors that meet functional requirements.

Parameter Comparison

Parameter	LP3996SD-3333	LP3996SD-3333/NOPB	LP5996SD-3333/NOPB	MIC2212-GSYML-TR	MIC2212-JSYML-TR	MIC2212-SGYML-TR	MIC2212-SJYML-TR	MIC2212-SMYML-TR	MIC2212-WSYML-TR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Microchip	Microchip	Microchip	Microchip	Microchip	Microchip
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
Output Configuration	Positive Fixed	Positive Fixed	Positive Fixed	Positive Fixed	Positive Fixed	Positive Fixed	Positive Fixed	Positive Fixed	Positive Fixed
Number of Regulators	2	2	2	2	2	2	2	2	2
Output Voltage	3.3V	3.3V	3.3V	1.8V, 3.3V	2.5V, 3.3V	3.3V, 1.8V	3.3V, 2.5V	3.3V, 2.8V	1.6V, 3.3V
Current Output	150mA, 300mA	150mA, 300mA	150mA, 300mA	150mA, 300mA	150mA, 300mA	150mA, 300mA	150mA, 300mA	150mA, 300mA	150mA, 300mA
Input Voltage (Max)	6V	6V	6V	5.5V	5.5V	5.5V	5.5V	5.5V	5.5V
Dropout Voltage @ 150mA	0.22V	0.22V	0.22V	0.25V	0.25V	0.25V	0.25V	0.25V	0.25V
Dropout Voltage @ 300mA	0.55V	0.55V	0.55V	0.42V	0.42V	0.42V	0.42V	0.42V	0.42V
Quiescent Current	100 µA	100 µA	110 µA	80 µA	80 µA	80 µA	80 µA	80 µA	80 µA
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package	10-WFDFN Exposed Pad	10-WFDFN Exposed Pad	10-WFDFN Exposed Pad	10-VFDFN Exposed Pad, 10-MLF®	10-VFDFN Exposed Pad, 10-MLF®	10-VFDFN Exposed Pad, 10-MLF®	10-VFDFN Exposed Pad, 10-MLF®	10-VFDFN Exposed Pad, 10-MLF®	10-VFDFN Exposed Pad, 10-MLF®
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Control Features	Enable	Enable	Enable	Enable, Power On Reset	Enable, Power On Reset	Enable, Power On Reset	Enable, Power On Reset	Enable, Power On Reset	Enable, Power On Reset
Protection Features	Over Temperature, Short Circuit	Over Temperature, Short Circuit	Over Temperature, Short Circuit	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature

Engineering Selection Recommendations

Direct Equivalent (Recommended for Obsolete Part Replacement):

LP3996SD-3333/NOPB is the direct equivalent with identical electrical specifications and package configuration. This part maintains all performance characteristics of the original LP3996SD-3333 while offering active product status and ROHS3 compliance. The tape and reel packaging format is suitable for automated assembly processes.

Parametric Equivalent:

LP5996SD-3333/NOPB provides equivalent functionality with a base product number change (LP5996 vs LP3996). Electrical performance is nearly identical with a 10 µA increase in quiescent current (110 µA vs 100 µA). This part is active and ROHS3 compliant.

Manufacturer-Recommended Alternatives (Microchip MIC2212 Series):

The Microchip MIC2212 family offers functional equivalence with extended operating temperature range (-40°C to 125°C vs -40°C to 85°C). These parts feature improved dropout voltage performance at 300mA (0.42V vs 0.55V) and lower quiescent current (80 µA vs 100 µA). All MIC2212 variants are ROHS3 compliant and active products.

Selection among MIC2212 variants depends on secondary output voltage requirements:

MIC2212-GSYML-TR: 1.8V/3.3V configuration
MIC2212-JSYML-TR: 2.5V/3.3V configuration
MIC2212-SGYML-TR: 3.3V/1.8V configuration
MIC2212-SJYML-TR: 3.3V/2.5V configuration
MIC2212-SMYML-TR: 3.3V/2.8V configuration
MIC2212-WSYML-TR: 1.6V/3.3V configuration

All MIC2212 variants maintain the same current delivery capability (150mA, 300mA) and package footprint compatibility with the original LP3996SD-3333.

Frequently Asked Questions (FAQ)

Q: Can LP3996SD-3333/NOPB be used as a direct replacement for LP3996SD-3333?

A: Yes. LP3996SD-3333/NOPB is electrically and mechanically identical to the obsolete LP3996SD-3333. The only differences are product status (active vs obsolete) and RoHS compliance (ROHS3 vs non-compliant). No design changes are required.

Q: What is the primary difference between LP3996SD-3333/NOPB and LP5996SD-3333/NOPB?

A: The base product number differs (LP3996 vs LP5996), resulting in a 10 µA increase in quiescent current. All other electrical specifications and package dimensions remain identical. Both are active, ROHS3-compliant products.

Q: Are Microchip MIC2212 parts pin-compatible with the LP3996SD-3333?

A: MIC2212 parts use the same 10-pin package footprint (10-VFDFN/10-MLF® vs 10-WFDFN) with identical pin assignments for power, ground, and control signals. PCB layout compatibility is maintained. Verify secondary output voltage requirements before selection.

Q: What advantages do MIC2212 parts offer over the LP3996 series?

A: MIC2212 variants provide extended operating temperature range (125°C vs 85°C), improved dropout voltage at 300mA (0.42V vs 0.55V), lower quiescent current (80 µA vs 100 µA), and additional control features including Power On Reset. All are ROHS3 compliant and active products.

Q: Can I use a MIC2212 variant with a different secondary output voltage than the original design?

A: No. The secondary output voltage is fixed during manufacturing. Select the MIC2212 variant that matches your required dual-output voltage configuration. Verify both output voltages are compatible with your circuit before substitution.

Q: What is the maximum input voltage tolerance for each substitute part?

A: LP3996 series (original and LP5996SD-3333/NOPB) support 6V maximum input. MIC2212 series support 5.5V maximum input. Designs operating near 6V input must use LP3996 series parts or verify MIC2212 operation at reduced input voltage.

Q: Are all substitute parts available in tape and reel packaging?

A: Yes. LP3996SD-3333/NOPB, LP5996SD-3333/NOPB, and all MIC2212 variants are supplied in tape and reel (TR) packaging suitable for automated assembly.

Q: What is the MSL (Moisture Sensitivity Level) for these parts?

A: All parts listed carry MSL 1 (Unlimited), indicating no moisture sensitivity precautions are required during storage or handling.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message