LP38690SD-1.8 Equivalent & Substitute Parts

Part Overview

The LP38690SD-1.8 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed 1.8V output at 1A maximum current in a 6-WSON (3x3) surface mount package. The main part is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and procurement planning. Substitute parts maintain identical electrical performance and mechanical compatibility while offering different packaging configurations or active product status.

Substiute Parts

LP38690SD-1.8

Texas InstrumentsIn Stock: 5633LP38690SD-1.8 Datasheet

Current PartRFQ

LP38690SD-1.8/NOPB

Texas InstrumentsIn Stock: 2509LP38690SD-1.8/NOPB Datasheet

DirectRFQ

LP38692SD-1.8/NOPB

Texas InstrumentsIn Stock: 2352LP38692SD-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP38690SD-1.8 are identified based on strict electrical and mechanical parameter matching. All substitute parts maintain identical specifications across output voltage, output current, input voltage range, dropout voltage, quiescent current, PSRR, operating temperature range, package type, and compliance certifications. The primary differentiator among substitute parts is packaging configuration (Tape & Reel versus Cut Tape & Digi-Reel) and product status (Last Time Buy versus Active). These differences do not affect electrical performance or PCB-level compatibility, only procurement and supply chain considerations.

Parameter Comparison

Engineering Selection Recommendations

LP38690SD-1.8/NOPB is a direct substitute offering identical electrical and mechanical specifications with active product status. This part is recommended for new designs and long-term procurement due to its Active classification and availability in Cut Tape and Digi-Reel packaging, which accommodates both high-volume and low-volume assembly requirements.

LP38692SD-1.8/NOPB is a parametric equivalent with identical electrical performance and package specifications. The base product number differs (LP38692 versus LP38690), but all functional parameters remain equivalent. This part maintains Active status and Tape & Reel packaging. Selection between LP38690SD-1.8/NOPB and LP38692SD-1.8/NOPB depends on packaging preference and supplier availability.

Both substitute parts carry ROHS3 compliance and MSL Level 1 rating, matching the original part's environmental and regulatory certifications.

Frequently Asked Questions (FAQ)

Q: Can LP38690SD-1.8/NOPB replace LP38690SD-1.8 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The /NOPB designation indicates lead-free plating and RoHS compliance. The primary difference is packaging configuration (Cut Tape & Digi-Reel versus Tape & Reel) and product status (Active versus Last Time Buy).

Q: What is the difference between LP38690SD-1.8/NOPB and LP38692SD-1.8/NOPB?

A: Both parts deliver identical electrical performance: 1.8V fixed output, 1A maximum current, 1.6V dropout voltage, 55 µA quiescent current, and 55dB PSRR. The base product numbers differ (LP38690 versus LP38692), but all specified parameters are equivalent. Selection depends on supplier availability and packaging preference.

Q: Are there any compatibility concerns when substituting these parts?

A: No. All three parts use the 6-WDFN Exposed Pad package with identical pinout and thermal characteristics. PCB layout, footprint, and thermal management requirements remain unchanged across all substitutes.

Q: Which part should be selected for new production?

A: LP38690SD-1.8/NOPB or LP38692SD-1.8/NOPB are both recommended, as both maintain Active product status. The original LP38690SD-1.8 is in Last Time Buy status and should not be selected for new designs requiring long-term supply assurance.

Q: Do all parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental certifications are identical across all parts.