LP3470IM5-4.63/NOPB Equivalent & Substitute Parts

Part Overview

The LP3470IM5-4.63/NOPB is a single-channel power supply supervisor IC manufactured by Texas Instruments, designed for power-on reset and simple reset applications. This device operates with a fixed 4.63V threshold and provides active-low open-drain output signaling. The part is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for ongoing production support, legacy system maintenance, and design continuity where this specific threshold voltage is required.

Substiute Parts

LP3470IM5-4.63/NOPB

Texas InstrumentsIn Stock: 2138LP3470IM5-4.63/NOPB Datasheet

Current PartRFQ

TPS389001DSER

Texas InstrumentsIn Stock: 131480TPS389001DSER Datasheet

MFR RecommendedRFQ

LP3470IM5X-4.63/NOPB

Texas InstrumentsIn Stock: 910LP3470IM5X-4.63/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LP3470IM5-4.63/NOPB is determined by the following critical parameters:

• Single-channel voltage monitoring with fixed or adjustable threshold capability
• Active-low reset output with open-drain or open-collector configuration
• Surface-mount packaging compatible with SOT-23-5 or equivalent footprints
• Operating temperature range of -40°C minimum to 85°C or higher
• 1ms minimum reset timeout or equivalent timing specification
• RoHS3 compliance and MSL Level 1 rating

Two substitute parts are identified:

1. LP3470IM5X-4.63/NOPB — Parametric equivalent with identical electrical specifications and packaging, differentiated only by tape & reel (TR) packaging format instead of cut tape (CT).

2. TPS389001DSER — Functional substitute with enhanced product status (Active), extended operating temperature range (-40°C ~ 125°C), and adjustable/selectable threshold voltage capability. Package differs to 6-WSON (1.5x1.5), requiring PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement with identical specifications: Select LP3470IM5X-4.63/NOPB when packaging format (tape & reel vs. cut tape) is the only difference required. This part maintains the fixed 4.63V threshold, SOT-23-5 footprint, and identical electrical performance. Both parts carry "Not For New Designs" status and share equivalent compliance certifications.

For long-term production support: Select TPS389001DSER for applications requiring active product status and extended temperature operation to 125°C. This part is suitable for new designs and provides adjustable threshold capability, allowing configuration to 4.63V or alternative thresholds as needed. PCB layout modification is required due to package change from SOT-23-5 to 6-WSON (1.5x1.5). All three parts maintain ROHS3 compliance and MSL Level 1 rating.

Frequently Asked Questions (FAQ)

Q: Can LP3470IM5X-4.63/NOPB be used as a direct drop-in replacement for LP3470IM5-4.63/NOPB? A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format: LP3470IM5-4.63/NOPB is supplied in cut tape (CT), while LP3470IM5X-4.63/NOPB is supplied in tape & reel (TR). PCB footprint and soldering requirements are identical.

Q: What are the key differences between LP3470IM5-4.63/NOPB and TPS389001DSER? A: The primary differences are: (1) TPS389001DSER has active product status versus "Not For New Designs"; (2) operating temperature extends to 125°C versus 85°C; (3) threshold voltage is adjustable/selectable versus fixed at 4.63V; (4) package is 6-WSON (1.5x1.5) versus SOT-23-5, requiring PCB layout changes. All other functional parameters (single-channel monitoring, active-low reset, open-drain output) remain equivalent.

Q: Is the 4.63V threshold critical for my application? A: If your circuit design requires exactly 4.63V threshold operation, use LP3470IM5-4.63/NOPB or LP3470IM5X-4.63/NOPB. If threshold adjustment is acceptable, TPS389001DSER offers flexibility through adjustable/selectable configuration while providing active product status and extended temperature range.

Q: What is the impact of changing from SOT-23-5 to 6-WSON packaging? A: Package change requires PCB layout modification, including new footprint design, trace routing, and via placement. The 6-WSON (1.5x1.5) package is smaller than SOT-23-5, potentially reducing board space. Thermal and electrical performance characteristics differ; refer to device datasheets for detailed specifications.

Q: Are all three parts RoHS3 compliant? A: Yes. LP3470IM5-4.63/NOPB, LP3470IM5X-4.63/NOPB, and TPS389001DSER are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: Why is LP3470IM5-4.63/NOPB marked "Not For New Designs"? A: This designation indicates the part has reached end-of-life status and Texas Instruments does not recommend it for new product development. For new designs, TPS389001DSER is the recommended active alternative offering equivalent functionality with extended product support.