LP3874ES-3.3/NOPB Equivalent & Substitute Parts

Part Overview

The LP3874ES-3.3/NOPB is a linear voltage regulator IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed 3.3V output at 800mA in a surface-mount TO-263 (DDPAK-5) package. The part is currently active in production with 774 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range, enabling design flexibility and supply chain optimization.

Key Parameters

Parameter	Value
Manufacturer Part Number	LP3874ES-3.3/NOPB
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Voltage (Fixed)	3.3V
Output Current	800mA
Input Voltage (Max)	7V
Voltage Dropout (Max)	0.35V @ 800mA
Package / Case	TO-263-6, D2PAK (5 Leads + Tab)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the LP3874ES-3.3/NOPB are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitutability:

Critical Matching Parameters:

Output voltage: 3.3V fixed
Output current capability: 800mA
Maximum input voltage: 7V
Voltage dropout: 0.35V @ 800mA
Package type: TO-263 (DDPAK-5)
Mounting type: Surface Mount
Operating temperature range: -40°C ~ 125°C
Protection features: Over Current, Over Temperature, Short Circuit
Control features: Enable function

All identified substitute parts maintain these electrical specifications and mechanical compatibility, ensuring direct functional replacement in circuit designs.

Parameter Comparison

Parameter	LP3874ES-3.3/NOPB	LP3961ES-3.3/NOPB	LP3964ES-3.3/NOPB	LP3871ES-3.3/NOPB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Output Voltage (Fixed)	3.3V	3.3V	3.3V	3.3V
Output Current	800mA	800mA	800mA	800mA
Input Voltage (Max)	7V	7V	7V	7V
Voltage Dropout (Max)	0.35V @ 800mA	0.35V @ 800mA	0.35V @ 800mA	0.35V @ 800mA
Quiescent Current (Iq)	9 mA	9 mA	9 mA	5 mA
Package / Case	TO-263-6, D2PAK (5 Leads + Tab)	TO-263-6, D2PAK (5 Leads + Tab)	TO-263-6, D2PAK (5 Leads + Tab)	TO-263-6, D2PAK (5 Leads + Tab)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
Control Features	Enable	Enable	Enable	Enable
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Inventory (Pcs)	774	4065	1076	1100

Engineering Selection Recommendations

All substitute parts maintain active product status with ROHS3 compliance and full regulatory alignment. Selection between LP3874ES-3.3/NOPB and its equivalents should be based on inventory availability and supply chain requirements, as electrical and mechanical specifications are identical across all options.

LP3871ES-3.3/NOPB offers a reduced quiescent current specification of 5 mA compared to 9 mA in the primary part, providing potential power efficiency benefits in low-power standby applications while maintaining all other electrical parameters.

LP3961ES-3.3/NOPB carries REACH Affected status, whereas LP3874ES-3.3/NOPB, LP3964ES-3.3/NOPB, and LP3871ES-3.3/NOPB are REACH Unaffected. This distinction may influence component selection based on regulatory requirements in specific markets or applications.

Frequently Asked Questions (FAQ)

Q: Can LP3961ES-3.3/NOPB be used as a direct replacement for LP3874ES-3.3/NOPB?

A: Yes. Both parts deliver identical electrical performance: 3.3V fixed output at 800mA with 0.35V maximum dropout voltage, identical quiescent current of 9 mA, and matching TO-263 package specifications. The primary difference is REACH status classification.

Q: What is the significance of the quiescent current difference in LP3871ES-3.3/NOPB?

A: LP3871ES-3.3/NOPB specifies 5 mA quiescent current versus 9 mA in LP3874ES-3.3/NOPB. This 4 mA reduction may provide measurable power savings in applications where the regulator operates in standby or low-load conditions for extended periods.

Q: Are all substitute parts available in the same package configuration?

A: Yes. All substitute parts use the TO-263-6 (D2PAK with 5 Leads + Tab) surface-mount package, ensuring identical PCB footprint and mounting compatibility.

Q: What is the difference between REACH Affected and REACH Unaffected status?

A: REACH Unaffected parts contain no substances of concern under REACH regulations. REACH Affected parts may contain regulated substances but remain compliant with applicable restrictions. Selection depends on end-use market and regulatory requirements.

Q: Can these parts be used interchangeably in production?

A: Yes, provided that REACH compliance requirements for the target market are satisfied. All parts are electrically and mechanically equivalent, with identical protection features, control functions, and operating temperature ranges.

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