Equivalent & Substitute Parts Reference for LP3992IMFX-1.5

Part Overview

The LP3992IMFX-1.5 from Texas Instruments is a Power Management IC (PMIC) classified as a linear voltage regulator. This device provides a fixed 1.5V output voltage with a maximum output current of 30mA, designed for surface-mount applications using the SOT-23-5 package. The part has integrated enable, over-temperature, and short-circuit protection features. It is obsolete, making identification of exact equivalent or authorized substitute components critical for continued manufacturing, maintenance, and repair activities.

Substiute Parts

LP3992IMFX-1.5

Texas InstrumentsIn Stock: 9135LP3992IMFX-1.5 Datasheet

Current PartRFQ

LP3992IMFX-1.5/NOPB

Texas InstrumentsIn Stock: 2272LP3992IMFX-1.5/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped based strictly on identical key electrical, mechanical, and packaging parameters. Only parts that match these critical characteristics are considered equivalents for substitution:

• Output configuration: Positive
• Output type: Fixed
• Number of regulators: 1
• Maximum input voltage: 5.2V
• Fixed output voltage: 1.5V
• Maximum output current: 30mA
• Quiescent current: 50 µA
• PSRR: 40dB ~ 30dB (1kHz ~ 20kHz)
• Control and protection features: Enable, Over Temperature, Short Circuit
• Operating temperature: -40°C ~ 125°C
• Package type: SC-74A, SOT-753; Supplier device package: SOT-23-5
• Mounting type: Surface Mount

Parameter Comparison

Engineering Selection Recommendations

LP3992IMFX-1.5 is designated obsolete and RoHS non-compliant. The LP3992IMFX-1.5/NOPB substitute is active and ROHS3 compliant. Both parts possess identical functional, electrical, and mechanical characteristics, including operating temperature range, output voltage/current, quiescent current, protection features, and package. LP3992IMFX-1.5/NOPB has updated compliance status, addressing RoHS requirements.

Frequently Asked Questions (FAQ)

Q1: What criteria define a valid substitute in the linear voltage regulator category?
A1: Key criteria include matching output voltage, output current, input voltage limitations, regulator count, package and mounting type, electrical specifications (such as PSRR and quiescent current), protection features, and identical temperature ratings.

Q2: Are LP3992IMFX-1.5 and LP3992IMFX-1.5/NOPB functionally interchangeable?
A2: Both parts are functionally identical, sharing all major parameters including electrical characteristics, protection features, operational limits, and package.

Q3: What are the compliance differences between LP3992IMFX-1.5 and its substitute?
A3: LP3992IMFX-1.5 is RoHS non-compliant and obsolete, whereas LP3992IMFX-1.5/NOPB is ROHS3 compliant and active.

Q4: Are there any differences in the mounting or physical layout between these parts?
A4: Both parts use the SOT-23-5 (SC-74A, SOT-753) package and are specified as surface mount devices, with no difference in mounting or layout.

Q5: What should be considered regarding supply continuity?
A5: LP3992IMFX-1.5 is obsolete, making LP3992IMFX-1.5/NOPB suitable for ongoing projects requiring identical functionality with current compliance standards.