LP38693SD-5.0/NOPB Equivalent & Substitute Parts

Part Overview

The LP38693SD-5.0/NOPB is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output applications. This automotive-grade PMIC delivers 500mA output current in a compact 6-WSON (3x3) surface mount package. The device is actively produced and maintains full AEC-Q100 automotive qualification with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and quality certifications are maintained across the same functional specifications.

Substiute Parts

LP38693SD-5.0/NOPB

Texas InstrumentsIn Stock: 1167LP38693SD-5.0/NOPB Datasheet

Current PartRFQ

LP38693QSD-5.0/NOPB

Texas InstrumentsIn Stock: 2019LP38693QSD-5.0/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP38693SD-5.0/NOPB is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 5V
• Minimum output current rating of 500mA
• Maximum input voltage of 10V or greater
• Voltage dropout specification of 0.45V @ 500mA or lower
• Quiescent current of 55 µA or lower
• 6-WSON (3x3) package compatibility
• Operating temperature range of -40°C ~ 125°C or wider
• Automotive qualification (AEC-Q100)
• ROHS3 compliance

The LP38693QSD-5.0/NOPB meets all substitution criteria as a parametric equivalent from the same manufacturer and product series.

Parameter Comparison

Engineering Selection Recommendations

Both the LP38693SD-5.0/NOPB and LP38693QSD-5.0/NOPB are active production devices with identical electrical specifications and automotive qualification. Selection between these parts is based on availability and packaging format. The LP38693QSD-5.0/NOPB currently maintains higher inventory levels (1920 Pcs vs 1144 Pcs). Both devices carry ROHS3 compliance, AEC-Q100 qualification, and MSL Level 1 moisture sensitivity rating, making them suitable for automotive and industrial applications requiring long-term reliability.

Frequently Asked Questions (FAQ)

Q: Can LP38693QSD-5.0/NOPB be used as a direct replacement for LP38693SD-5.0/NOPB?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output voltage, current rating, dropout voltage, and package configuration. The difference in part number suffix reflects internal qualification or manufacturing process variations that do not affect functional performance.

Q: Are there any package compatibility differences between these parts?

A: No. Both parts use the 6-WSON (3x3) surface mount package with exposed pad. PCB layout and thermal management requirements are identical.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both LP38693SD-5.0/NOPB and LP38693QSD-5.0/NOPB carry AEC-Q100 automotive qualification and ROHS3 compliance, suitable for automotive and industrial applications.

Q: What is the significance of the "SD" versus "QSD" designation?

A: The suffix variation indicates different qualification or manufacturing process tracking within Texas Instruments' product line. Electrical and mechanical specifications remain identical, and both are active production parts.

Q: Are there any thermal or reliability differences between these substitutes?

A: No differences are specified in the provided parameters. Both devices operate across the same temperature range (-40°C ~ 125°C) and maintain identical thermal and electrical characteristics.