LP3470IM5-4.38 Equivalent & Substitute Parts

Part Overview

The LP3470IM5-4.38 is a single-channel supervisor IC from Texas Instruments designed for power management and reset control applications. This component monitors a 4.38V threshold voltage and provides active-low reset output via open drain or open collector configuration. The part is classified as obsolete, making equivalent substitutes necessary for new procurement and ongoing system support. Substitute parts maintain identical electrical specifications and packaging while offering improved availability and product lifecycle status.

Substiute Parts

LP3470IM5-4.38

Texas InstrumentsIn Stock: 5519LP3470IM5-4.38 Datasheet

Current PartRFQ

LP3470IM5-4.38/NOPB

Texas InstrumentsIn Stock: 2212LP3470IM5-4.38/NOPB Datasheet

DirectRFQ

LP3470A438DBVR

Texas InstrumentsIn Stock: 4248LP3470A438DBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP3470IM5-4.38 is determined by strict alignment of the following critical parameters:

• Voltage threshold: 4.38V (exact match required)
• Output configuration: Open Drain or Open Collector
• Reset logic: Active Low
• Package / Case: SC-74A, SOT-753
• Mounting type: Surface Mount
• Number of channels: 1

The substitute parts identified maintain these core electrical and mechanical specifications, ensuring functional equivalence in circuit applications. Differences in product status, operating temperature range, and reset timeout characteristics do not affect substitutability within the defined parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

LP3470IM5-4.38/NOPB serves as a direct equivalent with identical electrical and thermal specifications. This part carries "Not For New Designs" status, indicating limited lifecycle support. Selection is appropriate for replacement applications where existing inventory or legacy system compatibility is required.

LP3470A438DBVR is the manufacturer-recommended active substitute. This part maintains all critical electrical parameters while offering extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) and active product status. This part is suitable for new designs and provides superior long-term availability and support. The extended temperature range provides additional design margin for applications operating in elevated ambient conditions.

Both substitute parts carry ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with modern manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can LP3470A438DBVR replace LP3470IM5-4.38 in existing designs?

A: Yes. Both parts maintain identical voltage threshold (4.38V), output configuration (open drain/open collector), reset logic (active low), and package specifications (SC-74A, SOT-753). The extended operating temperature range of LP3470A438DBVR provides additional thermal margin without affecting circuit functionality.

Q: What is the difference between LP3470IM5-4.38 and LP3470IM5-4.38/NOPB?

A: These parts are electrically and mechanically identical. The "/NOPB" designation indicates Tape & Reel packaging format, while the base part number may reference alternative packaging. Both maintain the same 4.38V threshold and SOT-23-5 package configuration.

Q: Why is LP3470IM5-4.38 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. LP3470A438DBVR is the active replacement offering equivalent functionality with improved lifecycle support.

Q: Are there thermal performance differences between these parts?

A: Operating temperature ranges differ: LP3470IM5-4.38 and LP3470IM5-4.38/NOPB operate to 85°C, while LP3470A438DBVR extends to 125°C. Reset timeout specifications also vary (1ms minimum versus 619ms typical), but these differences do not affect substitutability for standard reset control applications.

Q: Do all three parts use the same package?

A: Yes. All three parts use SC-74A, SOT-753 surface mount package with SOT-23-5 supplier device package designation, ensuring PCB layout and assembly compatibility.