LP3470A400DBVR Equivalent & Substitute Parts

Part Overview

The LP3470A400DBVR is a single-channel power supply supervisor IC manufactured by Texas Instruments, designed for power-on reset and system monitoring applications. This Surface Mount device operates across the industrial temperature range of -40°C to 125°C and features an open drain output with active low reset functionality. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across the specified parameter set.

Substiute Parts

LP3470A400DBVR

Texas InstrumentsIn Stock: 3525LP3470A400DBVR Datasheet

Current PartRFQ

TPS3840DL40DBVR

Texas InstrumentsIn Stock: 3269TPS3840DL40DBVR Datasheet

Parametric EquivalentRFQ

TPS3840DL40DBVRQ1

Texas InstrumentsIn Stock: 3796TPS3840DL40DBVRQ1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP3470A400DBVR is determined by strict equivalence across the following critical parameters:

• Single-channel voltage monitoring with 4V threshold
• Open drain or open collector output configuration
• Active low reset logic with 619ms typical timeout
• Industrial temperature range (-40°C to 125°C)
• Surface mount SOT-23-5 package (SC-74A, SOT-753)
• ROHS3 compliance and MSL Level 1 rating

Two substitute parts meet these criteria: TPS3840DL40DBVR and TPS3840DL40DBVRQ1. Both are Texas Instruments supervisor ICs with identical electrical specifications and package compatibility. The TPS3840DL40DBVRQ1 variant includes automotive-grade qualification (AEC-Q100) and is designated for automotive applications, while the standard TPS3840DL40DBVR is suitable for industrial and commercial use.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and full regulatory compliance. Selection between LP3470A400DBVR and TPS3840DL40DBVR is interchangeable for industrial and commercial applications where automotive qualification is not required. The TPS3840DL40DBVRQ1 is the appropriate selection for automotive applications requiring AEC-Q100 qualification. All parts share identical electrical specifications, package geometry, and environmental ratings, ensuring direct functional substitution within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can TPS3840DL40DBVR replace LP3470A400DBVR in production designs?

A: Yes. Both parts are functionally equivalent across all specified electrical parameters, including 4V threshold voltage, 619ms reset timeout, active low reset logic, and SOT-23-5 package configuration. No design modifications are required.

Q: What is the difference between TPS3840DL40DBVR and TPS3840DL40DBVRQ1?

A: The TPS3840DL40DBVRQ1 includes automotive-grade qualification (AEC-Q100) and is designated for automotive applications. The electrical specifications and package are identical. Use TPS3840DL40DBVRQ1 only when automotive qualification is a design requirement.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the SOT-23-5 package (SC-74A, SOT-753) with identical pin assignments and electrical characteristics.

Q: Do these parts require different PCB layout considerations?

A: No. All three parts share the same package footprint and thermal characteristics. Existing PCB designs require no modification.

Q: Are there inventory or lead time differences between these parts?

A: Inventory levels vary. LP3470A400DBVR has 3483 units in stock, TPS3840DL40DBVR has 3193 units, and TPS3840DL40DBVRQ1 has 3720 units available. Consult current supplier inventory for lead time information.

Q: Do all parts meet the same environmental and compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, MSL Level 1 rated, and operate across -40°C to 125°C. Compliance certifications are equivalent.