LP38692MP-1.8 Equivalent & Substitute Parts

Part Overview

The LP38692MP-1.8 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed positive 1.8V output at 1A maximum current in a SOT-223-5 surface mount package. The main part is currently listed as obsolete, making substitute parts necessary for ongoing production and maintenance applications. Alternative models with identical electrical and mechanical specifications are available from active product lines.

Substiute Parts

LP38692MP-1.8

Texas InstrumentsIn Stock: 1228LP38692MP-1.8 Datasheet

Current PartRFQ

LP38692MP-1.8/NOPB

National SemiconductorIn Stock: 1569LP38692MP-1.8/NOPB Datasheet

DirectRFQ

LP38692MPX-1.8/NOPB

Texas InstrumentsIn Stock: 1323LP38692MPX-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP38692MP-1.8 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitutability:

• Fixed output voltage of 1.8V
• Maximum output current of 1A
• Maximum input voltage of 10V
• Dropout voltage specification of 1.6V @ 1A
• Quiescent current of 55 µA
• PSRR of 55dB (120Hz)
• Over temperature protection
• Operating temperature range of -40°C to 125°C
• SOT-223-5 package configuration
• Surface mount technology

Two substitute parts meet these criteria: LP38692MP-1.8/NOPB (direct manufacturer equivalent) and LP38692MPX-1.8/NOPB (parametric equivalent with enhanced compliance).

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are electrically and mechanically equivalent to the LP38692MP-1.8. Selection between them depends on product status and compliance requirements:

LP38692MP-1.8/NOPB is an active product from National Semiconductor with identical electrical specifications and bulk packaging. This part provides direct substitution for applications where RoHS compliance is not mandated.

LP38692MPX-1.8/NOPB is an active product from Texas Instruments with ROHS3 compliance certification. This part is recommended for applications requiring RoHS3 compliance and is available in Tape & Reel packaging format, suitable for automated assembly processes. The /NOPB designation indicates lead-free construction.

Both parts maintain the same operating temperature range, protection features, and electrical performance as the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can LP38692MP-1.8/NOPB and LP38692MPX-1.8/NOPB be used interchangeably with LP38692MP-1.8?

A: Yes. Both substitute parts meet all electrical and mechanical parameters specified for the main part, including output voltage, current rating, dropout voltage, quiescent current, PSRR, protection features, operating temperature range, and SOT-223-5 package configuration.

Q: What is the difference between the two substitute parts?

A: LP38692MP-1.8/NOPB is supplied by National Semiconductor in bulk packaging. LP38692MPX-1.8/NOPB is supplied by Texas Instruments in Tape & Reel format with ROHS3 compliance certification. Both are electrically identical.

Q: Does package designation affect substitutability?

A: The SOT-223 and SOT-223-5 designations refer to the same physical package footprint. Both substitute parts are compatible with PCB layouts designed for the LP38692MP-1.8.

Q: Which substitute part should be selected for new designs?

A: Selection depends on compliance requirements and assembly process. LP38692MPX-1.8/NOPB is recommended for applications requiring RoHS3 compliance and automated assembly. LP38692MP-1.8/NOPB is suitable for applications without RoHS compliance mandates.

Q: Are there any thermal or performance differences between the substitute parts?

A: No. All three parts share identical thermal specifications, operating temperature range (-40°C to 125°C), and electrical performance characteristics including PSRR and dropout voltage.