TPS3825-50DBVR Equivalent & Substitute Parts

Part Overview

The TPS3825-50DBVR is a single-channel power management supervisor IC manufactured by Texas Instruments, designed for power-on reset and simple reset applications. This SOT-23-5 surface mount device operates across -40°C to 85°C and features a 4.55V voltage threshold with push-pull totem pole output and active high reset configuration. The part maintains active product status with 10,623 units in current inventory.

Equivalent and substitute parts are necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility requires alternative sourcing from qualified manufacturers while maintaining functional compatibility.

Substiute Parts

TPS3825-50DBVR

Texas InstrumentsIn Stock: 10636TPS3825-50DBVR Datasheet

Current PartRFQ

TPS3825-50DBVT

Texas InstrumentsIn Stock: 2079TPS3825-50DBVT Datasheet

Parametric EquivalentRFQ

BD87A28FVM-TR

Rohm SemiconductorIn Stock: 18269BD87A28FVM-TR Datasheet

MFR RecommendedRFQ

MAX825LEUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1200MAX825LEUK+T Datasheet

MFR RecommendedRFQ

MAX825MEUK+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3884MAX825MEUK+T Datasheet

MFR RecommendedRFQ

STM6825LWY6F

STMicroelectronicsIn Stock: 961STM6825LWY6F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS3825-50DBVR is determined by the following critical parameters:

Primary Compatibility Criteria:

• Single-channel voltage monitoring architecture
• Push-pull totem pole output configuration
• Active high reset logic
• SOT-23-5 package footprint compatibility
• Voltage threshold within acceptable operating range (4.38V to 4.63V)
• Reset timeout minimum of 120ms or greater
• Surface mount technology
• ROHS3 compliance and MSL Level 1 rating

Substitute Parts Identified:

Parametric Equivalent: TPS3825-50DBVT (Texas Instruments) — Identical electrical specifications with Last Time Buy product status.

Functional Equivalents: MAX825LEUK+T, MAX825MEUK+T (Analog Devices Inc./Maxim Integrated), and STM6825LWY6F (STMicroelectronics) — All feature push-pull totem pole output, active high/low reset capability, SOT-23-5 packaging, and voltage thresholds within the acceptable range.

Functional Alternative: BD87A28FVM-TR (Rohm Semiconductor) — Open drain output configuration with active low reset and adjustable reset timeout; requires circuit design verification due to output topology differences.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Recommended for Pin-Compatible Designs):

TPS3825-50DBVT serves as the parametric equivalent with identical electrical specifications. Selection is appropriate for designs requiring continuity with the original TPS3825-50DBVR, though Last Time Buy status requires long-term inventory planning.

Functional Equivalents (SOT-23-5 Package, Push-Pull Output):

MAX825LEUK+T, MAX825MEUK+T, and STM6825LWY6F maintain push-pull totem pole output topology and SOT-23-5 footprint compatibility. These parts feature extended operating temperature ranges (-40°C to 125°C for Maxim devices; -40°C to 85°C for STMicroelectronics) and longer reset timeout specifications (140ms minimum). All three maintain active product status with established supply chains. Voltage threshold variations (4.38V to 4.63V) remain within acceptable tolerance for 4.55V threshold applications.

Alternative Topology (Design Modification Required):

BD87A28FVM-TR offers the highest inventory availability (18,182 units) but requires circuit design modifications due to open drain output configuration, active low reset logic, and 8-MSOP package format. This part is suitable only for designs where output topology and reset polarity can be accommodated through additional circuitry.

Compliance and Certification:

All identified substitutes maintain ROHS3 compliance, MSL Level 1 rating, and active or established product status, ensuring regulatory alignment and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can TPS3825-50DBVT be used as a direct drop-in replacement for TPS3825-50DBVR?

A: Yes. TPS3825-50DBVT is a parametric equivalent with identical electrical specifications, package footprint (SOT-23-5), and pin configuration. The only distinction is product status (Last Time Buy versus Active), which does not affect functional compatibility.

Q: What are the key differences between the Maxim MAX825 series and the original TPS3825-50DBVR?

A: MAX825LEUK+T and MAX825MEUK+T maintain identical push-pull totem pole output and SOT-23-5 packaging. Primary differences include extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), longer reset timeout (140ms minimum versus 120ms minimum), and voltage threshold variations (4.63V and 4.38V respectively versus 4.55V). These differences are within acceptable tolerance for most applications.

Q: Is the STM6825LWY6F compatible with the TPS3825-50DBVR?

A: STM6825LWY6F is functionally compatible for applications requiring push-pull totem pole output and SOT-23-5 packaging. Operating temperature range matches the original (-40°C to 85°C), and voltage threshold (4.63V) is within acceptable tolerance. Reset timeout is longer (140ms minimum), which does not compromise functionality.

Q: Why is BD87A28FVM-TR listed as an alternative if it requires design modifications?

A: BD87A28FVM-TR is included due to its high inventory availability and active product status. However, its open drain output topology, active low reset logic, and 8-MSOP package require circuit design changes. This part is suitable only for new designs or redesigns where output topology can be accommodated.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring regulatory alignment with the original TPS3825-50DBVR.

Q: What is the voltage threshold tolerance across all substitute parts?

A: Voltage thresholds range from 2.8V (BD87A28FVM-TR) to 4.63V (MAX825LEUK+T and STM6825LWY6F). For push-pull totem pole equivalents, thresholds span 4.38V to 4.63V, representing acceptable tolerance around the original 4.55V specification.

Q: Can I use multiple substitute parts interchangeably in the same design?

A: MAX825LEUK+T, MAX825MEUK+T, and STM6825LWY6F are interchangeable for applications requiring push-pull totem pole output and SOT-23-5 packaging. TPS3825-50DBVT is directly interchangeable with the original part. BD87A28FVM-TR requires separate circuit design validation due to output topology differences.