LP3470IM5-2.83/NOPB Equivalent & Substitute Parts

Part Overview

The LP3470IM5-2.83/NOPB is a single-channel power supply supervisor IC manufactured by Texas Instruments, designed for power-on reset and voltage monitoring applications. This device features an open drain output, active low reset, and operates across the industrial temperature range of -40°C to 85°C. The part is classified as Not For New Designs, indicating it has been superseded in Texas Instruments' product portfolio. Finding equivalent or substitute components is necessary for applications requiring continued support, design flexibility, or improved availability in current production environments.

Substiute Parts

LP3470IM5-2.83/NOPB

Texas InstrumentsIn Stock: 937LP3470IM5-2.83/NOPB Datasheet

Current PartRFQ

TPS389025DSER

Texas InstrumentsIn Stock: 1114TPS389025DSER Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP3470IM5-2.83/NOPB is determined by the following critical parameters:

Functional Compatibility Requirements:

• Single-channel voltage monitoring supervisor
• Simple reset/power-on reset functionality
• Open drain or open collector output configuration
• Active low reset logic
• Surface mount technology

Electrical Compatibility Criteria:

• Voltage threshold tolerance: The LP3470IM5-2.83/NOPB monitors at 2.83V. Substitute parts must support equivalent or compatible threshold voltages within the same application context.
• Operating temperature range: Substitute parts must support at minimum the -40°C to 85°C range, or a superset thereof.
• Reset timeout specifications: Substitute parts must meet or exceed the 1ms minimum reset timeout requirement.

Compliance & Certification:

• RoHS3 compliance required
• REACH unaffected status maintained
• Moisture sensitivity level 1 (unlimited) preferred for equivalent handling

The TPS389025DSER qualifies as a direct substitute based on matching functional architecture, output configuration, reset logic, and compliance certifications, despite differences in package form factor and operating temperature range extension.

Parameter Comparison

Engineering Selection Recommendations

The TPS389025DSER is the manufacturer-recommended substitute for the LP3470IM5-2.83/NOPB. Selection between these parts should be based on the following factors:

Product Status Consideration: The LP3470IM5-2.83/NOPB carries a "Not For New Designs" status, indicating Texas Instruments has transitioned this product line. The TPS389025DSER maintains Active product status, making it the preferred choice for new designs and long-term availability assurance.

Compliance & Certification Alignment: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels, ensuring equivalent environmental and regulatory handling requirements.

Operational Temperature Range: The TPS389025DSER extends the upper operating temperature limit to 125°C compared to the LP3470IM5-2.83/NOPB's 85°C maximum. This provides additional thermal margin for applications operating in elevated ambient conditions.

Package Form Factor: The transition from SOT-23-5 to 6-WSON (1.5x1.5) represents a package change that requires PCB layout modification. This consideration is secondary to functional compatibility but must be evaluated during design integration.

Frequently Asked Questions (FAQ)

Q: Can the TPS389025DSER directly replace the LP3470IM5-2.83/NOPB without circuit modifications?

A: Functional replacement is possible due to matching supervisor architecture, output configuration, and reset logic. However, the package change from SOT-23-5 to 6-WSON requires PCB layout redesign. Voltage threshold difference (2.83V vs. 2.5V) must be evaluated against specific application requirements.

Q: What is the significance of the voltage threshold difference between these parts?

A: The LP3470IM5-2.83/NOPB monitors at 2.83V, while the TPS389025DSER monitors at 2.5V. This 0.33V difference affects the power supply voltage at which the reset signal activates. Application circuits must be analyzed to determine if this threshold variance is acceptable for the intended power management function.

Q: Are both parts suitable for industrial temperature applications?

A: The LP3470IM5-2.83/NOPB operates from -40°C to 85°C. The TPS389025DSER extends this range to -40°C to 125°C, providing broader thermal coverage. Both support industrial temperature requirements, with the TPS389025DSER offering enhanced high-temperature capability.

Q: What does "Not For New Designs" mean for the LP3470IM5-2.83/NOPB?

A: This status indicates Texas Instruments has discontinued active development and marketing of this part. While existing inventory may be available, the manufacturer recommends using the TPS389025DSER for new product development to ensure long-term supply chain stability and access to technical support.

Q: Are the RoHS and REACH compliance statuses identical between these parts?

A: Yes. Both the LP3470IM5-2.83/NOPB and TPS389025DSER maintain ROHS3 compliance and REACH unaffected status, ensuring equivalent environmental and regulatory compliance for applications subject to these standards.

Q: What is the reset timeout specification for the TPS389025DSER?

A: The reset timeout parameter for the TPS389025DSER is not specified in the available data. The LP3470IM5-2.83/NOPB specifies a 1ms minimum reset timeout. Detailed timing specifications for the TPS389025DSER should be obtained from the device datasheet for applications with specific reset timing requirements.