LP3962ET-2.5 Equivalent & Substitute Parts

Part Overview

The LP3962ET-2.5 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This device delivers 1.5A output current at a fixed 2.5V output with a maximum input voltage of 7V and operates across the industrial temperature range of -40°C to 125°C. The part is packaged in TO-220-5 with formed leads for through-hole mounting.

The LP3962ET-2.5 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

LP3962ET-2.5

Texas InstrumentsIn Stock: 3589LP3962ET-2.5 Datasheet

Current PartRFQ

LP3852ET-2.5/NOPB

Texas InstrumentsIn Stock: 1108LP3852ET-2.5/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP3962ET-2.5 are identified based on strict electrical and mechanical parameter matching. The critical parameters that determine substitution eligibility are:

• Output voltage: Fixed 2.5V
• Output current capability: 1.5A minimum
• Maximum input voltage: 7V
• Package type: TO-220-5 Formed Leads
• Output configuration: Positive fixed
• Control features: Enable function
• Protection features: Over Current, Over Temperature, Short Circuit
• Operating temperature range: -40°C to 125°C
• Mounting type: Through Hole

The LP3852ET-2.5/NOPB meets all these criteria and qualifies as a parametric equivalent substitute. Both devices share identical output voltage, output current, input voltage rating, package configuration, and thermal operating range. The LP3852ET-2.5/NOPB is an active product from Texas Instruments, ensuring ongoing availability and support.

Parameter Comparison

Engineering Selection Recommendations

The LP3852ET-2.5/NOPB is the qualified substitute for the obsolete LP3962ET-2.5. Both devices are manufactured by Texas Instruments and maintain identical electrical specifications for output voltage, output current, input voltage rating, and thermal operating range. Both are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The LP3852ET-2.5/NOPB offers performance improvements over the original part: lower dropout voltage (0.38V versus 0.55V), reduced quiescent current (3 mA versus 9 mA), and documented PSRR performance (73dB ~ 57dB at 120Hz). These enhancements provide better efficiency and noise performance in applications requiring low-dropout regulation and low standby current consumption.

The LP3852ET-2.5/NOPB maintains active product status with confirmed inventory availability, ensuring reliable sourcing for production and field replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the LP3852ET-2.5/NOPB directly replace the LP3962ET-2.5 in existing designs?

A: Yes. Both devices share identical output voltage (2.5V), output current (1.5A), maximum input voltage (7V), package configuration (TO-220-5 Formed Leads), operating temperature range (-40°C to 125°C), and protection features. Pin-to-pin compatibility and electrical performance are equivalent for standard linear regulator applications.

Q: What are the key differences between these two parts?

A: The LP3852ET-2.5/NOPB provides superior performance characteristics: dropout voltage is reduced from 0.55V to 0.38V at 1.5A output, quiescent current is reduced from 9 mA to 3 mA, and PSRR performance is specified at 73dB ~ 57dB (120Hz). The LP3852ET-2.5/NOPB is an active product, while the LP3962ET-2.5 is obsolete.

Q: Are there any thermal or mounting considerations when substituting these parts?

A: Both parts use identical TO-220-5 through-hole packaging with formed leads. Thermal characteristics and mounting procedures remain unchanged. Heatsinking requirements, if applicable to the original design, apply equally to the substitute part.

Q: What compliance certifications apply to the substitute part?

A: The LP3852ET-2.5/NOPB is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards equivalent to the original LP3962ET-2.5.

Q: Is the LP3852ET-2.5/NOPB available in the same packaging format?

A: The LP3852ET-2.5/NOPB is supplied in tube packaging, while the original LP3962ET-2.5 packaging format is not specified. Both devices use the same TO-220-5 Formed Leads package configuration for circuit board integration.