TCR3DM25,LF(SE Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TCR3DM25,LF(SE is a linear voltage regulator IC manufactured by Toshiba Semiconductor and Storage, classified as a Power Management (PMIC) component. This device functions as a positive fixed output regulator delivering 300mA output current with a fixed 2.5V output voltage. The part is currently in Active product status with 4909 units available in stock.

Identification of equivalent and substitute parts becomes necessary when the primary part reaches end-of-life status, experiences supply constraints, or when design requirements mandate alternative sourcing options. Substitute parts must maintain electrical and mechanical compatibility across critical parameters including output voltage, output current, dropout voltage, package configuration, and operating temperature range.

Substiute Parts

TCR3DM25,LF(SE

Toshiba Semiconductor and StorageIn Stock: 5011TCR3DM25,LF(SE Datasheet

Current PartRFQ

BU25UA3WNVX-TL

Rohm SemiconductorIn Stock: 25236BU25UA3WNVX-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TCR3DM25,LF(SE is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Mandatory Match):

• Output voltage: 2.5V fixed
• Maximum output current: 300mA
• Maximum input voltage: 5.5V
• Output configuration: Positive
• Output type: Fixed
• Number of regulators: 1
• Control features: Enable function
• Protection features: Over Current and Over Temperature protection

Mechanical Parameters (Mandatory Match):

• Package type: 4-UDFN Exposed Pad
• Mounting type: Surface Mount

Environmental & Compliance Parameters:

• Operating temperature range: -40°C to 85°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)
• REACH Unaffected status

The substitute part BU25UA3WNVX-TL manufactured by Rohm Semiconductor satisfies all mandatory electrical and mechanical parameters. This part maintains identical output voltage, output current, input voltage maximum, and package configuration. The substitute exhibits improved dropout voltage performance (0.22V versus 0.29V at 300mA) and includes specified quiescent current (90 µA), both representing enhanced electrical characteristics. Environmental and compliance certifications remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: TCR3DM25,LF(SE

The TCR3DM25,LF(SE maintains Active product status with current manufacturing support. This part is suitable for new designs and ongoing production applications. The device carries full RoHS3 compliance and REACH Unaffected certification, meeting current regulatory requirements. With 4909 units in stock, supply availability is established.

Substitute Part: BU25UA3WNVX-TL

The BU25UA3WNVX-TL from Rohm Semiconductor provides complete electrical and mechanical equivalence to the TCR3DM25,LF(SE across all critical parameters. This substitute demonstrates superior dropout voltage performance (0.22V versus 0.29V at 300mA), resulting in improved efficiency in power-constrained applications. The part maintains identical package configuration (4-UDFN Exposed Pad), operating temperature range (-40°C to 85°C), and compliance certifications (RoHS3, REACH Unaffected, MSL 1).

The BU25UA3WNVX-TL carries a "Not For New Designs" product status designation. This classification indicates the part remains available for production and replacement applications but is not recommended for new design implementations. Selection of this substitute is appropriate for legacy system maintenance, production continuity, or when supply of the primary part is constrained. Inventory availability is substantial at 25195 units in stock.

Selection Criteria:

• Use TCR3DM25,LF(SE for new designs and applications requiring long-term manufacturing support
• Use BU25UA3WNVX-TL for replacement, maintenance, or production continuity when primary part supply is unavailable
• Both parts are electrically and mechanically interchangeable within the specified parameter ranges
• Package footprint compatibility is confirmed for direct PCB substitution

Frequently Asked Questions (FAQ)

Q: Can BU25UA3WNVX-TL be used as a direct replacement for TCR3DM25,LF(SE in existing designs?

A: Yes. The BU25UA3WNVX-TL is electrically and mechanically equivalent to the TCR3DM25,LF(SE. Both devices share identical output voltage (2.5V), output current (300mA), input voltage maximum (5.5V), package configuration (4-UDFN Exposed Pad), and operating temperature range (-40°C to 85°C). Direct PCB substitution is supported without circuit modification.

Q: What is the significance of the "Not For New Designs" status on the BU25UA3WNVX-TL?

A: "Not For New Designs" indicates that while the BU25UA3WNVX-TL remains in production and available for purchase, the manufacturer does not recommend its use in new product development. This classification is typical for mature or transitioning products. The part remains fully functional and suitable for replacement, maintenance, and production continuity applications.

Q: Are there differences in dropout voltage between these parts?

A: Yes. The BU25UA3WNVX-TL exhibits a maximum dropout voltage of 0.22V at 300mA, compared to 0.29V for the TCR3DM25,LF(SE. This 0.07V difference represents improved efficiency in the substitute part, resulting in lower heat dissipation and reduced input voltage requirements in power-limited applications.

Q: Do both parts require identical PCB layout and thermal management?

A: Both parts use the same 4-UDFN Exposed Pad package with identical pin configuration and thermal characteristics. PCB layout, trace routing, and thermal management strategies developed for the TCR3DM25,LF(SE are directly applicable to the BU25UA3WNVX-TL without modification.

Q: Are compliance certifications identical between these parts?

A: Yes. Both the TCR3DM25,LF(SE and BU25UA3WNVX-TL carry RoHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance requirements are satisfied by either part.

Q: What is the quiescent current specification for the TCR3DM25,LF(SE?

A: The quiescent current (Iq) specification is not provided in the technical parameters for the TCR3DM25,LF(SE. The BU25UA3WNVX-TL specifies 90 µA quiescent current. Consult the TCR3DM25,LF(SE datasheet for this parameter if quiescent current is critical to application design.

Q: Can these parts be used interchangeably in high-volume production?

A: Both parts are suitable for production applications. The TCR3DM25,LF(SE is recommended for new production lines due to Active status. The BU25UA3WNVX-TL is appropriate for ongoing production of existing designs or when supply of the primary part is constrained. Inventory levels are substantial for both parts (4909 and 25195 units respectively).

Q: What protection features are included in both regulators?

A: Both the TCR3DM25,LF(SE and BU25UA3WNVX-TL include Over Current and Over Temperature protection. These features safeguard the regulator and downstream circuitry against fault conditions and thermal stress.