LP2983IM5X-1.2 Equivalent & Substitute Parts

Part Overview

The LP2983IM5X-1.2 is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed positive output of 1.2V at 150mA in a surface-mount SOT-23-5 package. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Substiute Parts

LP2983IM5X-1.2

Texas InstrumentsIn Stock: 21672LP2983IM5X-1.2 Datasheet

Current PartRFQ

LP2983IM5X-1.2/NOPB

National SemiconductorIn Stock: 4500LP2983IM5X-1.2/NOPB Datasheet

DirectRFQ

LP2983AIM5X-1.2/NOPB

Texas InstrumentsIn Stock: 4255LP2983AIM5X-1.2/NOPB Datasheet

Parametric EquivalentRFQ

LP2983IM5-1.2/NOPB

Texas InstrumentsIn Stock: 4300LP2983IM5-1.2/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LP2983IM5X-1.2 are identified based on strict parametric equivalence across the following critical criteria:

• Output voltage: 1.2V fixed
• Output current capability: 150mA
• Input voltage range: Maximum 16V
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Quiescent current: 95 µA
• Protection features: Over Current, Over Temperature, Short Circuit
• Control features: Enable function
• Operating temperature range: -40°C ~ 125°C

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the original LP2983IM5X-1.2, ensuring direct functional replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

LP2983IM5X-1.2/NOPB (National Semiconductor): This part maintains full parametric equivalence with the original LP2983IM5X-1.2 and carries an Active product status, ensuring continued availability and supply chain support. This is the primary direct substitute for new designs and production continuity.

LP2983AIM5X-1.2/NOPB (Texas Instruments): This variant is ROHS3 compliant and available in Tape & Reel packaging, making it suitable for high-volume manufacturing environments. The Last Time Buy status indicates limited future availability; procurement should prioritize this part if RoHS compliance is a design requirement.

LP2983IM5-1.2/NOPB (Texas Instruments): This part is ROHS3 compliant and available in Cut Tape and Digi-Reel packaging formats. The Obsolete status limits its suitability for new production; however, it remains parametrically equivalent for legacy system support.

Frequently Asked Questions (FAQ)

Q: Can LP2983IM5X-1.2/NOPB be used as a direct replacement for LP2983IM5X-1.2?

A: Yes. Both parts are parametrically identical across all critical electrical specifications: 1.2V fixed output, 150mA output current, 16V maximum input voltage, SOT-23-5 package, and identical protection and control features. The primary difference is product status and packaging format.

Q: What is the difference between LP2983IM5X-1.2 and LP2983AIM5X-1.2/NOPB?

A: Both parts deliver identical electrical performance. The key differences are: LP2983AIM5X-1.2/NOPB is ROHS3 compliant, available in Tape & Reel packaging, and carries a Last Time Buy status. The original LP2983IM5X-1.2 is RoHS non-compliant and obsolete.

Q: Are all substitute parts compatible with the SOT-23-5 footprint?

A: Yes. All listed substitute parts use the SC-74A/SOT-753 package designation, which corresponds to the SOT-23-5 supplier device package. Pin configuration and mechanical dimensions are identical, enabling direct PCB footprint compatibility.

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

A: LP2983AIM5X-1.2/NOPB or LP2983IM5-1.2/NOPB are both ROHS3 compliant. LP2983AIM5X-1.2/NOPB is recommended due to its Active product status and Tape & Reel availability for production environments.

Q: What is the significance of the /NOPB suffix in the part numbers?

A: The /NOPB suffix indicates "No Plumbum" (lead-free) packaging, reflecting RoHS compliance standards. Parts without this suffix may contain lead and are subject to different regulatory restrictions.

Q: Can LP2983IM5-1.2/NOPB be used in high-volume production?

A: While parametrically equivalent, LP2983IM5-1.2/NOPB carries an Obsolete status and is available only in Cut Tape and Digi-Reel formats, which are less suitable for automated high-volume assembly. LP2983IM5X-1.2/NOPB (Active status) or LP2983AIM5X-1.2/NOPB (Last Time Buy, Tape & Reel) are preferred for production environments.