TCR3RM28A,LF Linear Voltage Regulator

Part Overview

The TCR3RM28A,LF 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 voltage regulator delivering 300mA at 2.8V with a maximum dropout voltage of 0.13V at full load current. The part is currently listed as obsolete, necessitating identification of active substitute components that maintain electrical and mechanical compatibility for ongoing production and field replacement applications.

Substiute Parts

TCR3RM28A,LF

Toshiba Semiconductor and StorageIn Stock: 890TCR3RM28A,LF Datasheet

Current PartRFQ

TCR3RM28A,LF(SE

Toshiba Semiconductor and StorageIn Stock: 6368TCR3RM28A,LF(SE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete TCR3RM28A,LF is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Fixed output voltage of 2.8V
• Output current rating of 300mA minimum
• Maximum input voltage of 5.5V or greater
• Operating temperature range of -40°C to 85°C or wider
• Over Current and Over Temperature protection features

Mechanical Compatibility Requirements:

• 4-XDFN Exposed Pad package configuration
• Surface mount mounting type
• Identical pinout and footprint

Regulatory and Compliance Requirements:

• ROHS3 Compliance
• Moisture Sensitivity Level 1 (Unlimited)

The substitute part TCR3RM28A,LF(SE meets all electrical, mechanical, and regulatory requirements while offering active product status and enhanced availability.

Parameter Comparison

Engineering Selection Recommendations

The TCR3RM28A,LF(SE is the direct functional equivalent of the obsolete TCR3RM28A,LF. Both components are manufactured by Toshiba Semiconductor and Storage within the TCR3RM series and share identical electrical specifications, package configuration, and regulatory compliance status.

Selection Basis:

The substitute part maintains all critical electrical parameters including 2.8V fixed output voltage, 300mA output current capability, 5.5V maximum input voltage, and identical protection features. The dropout voltage specification increases marginally from 0.13V to 0.15V at 300mA, a difference of 0.02V that remains within acceptable tolerance for most applications utilizing this regulator.

The TCR3RM28A,LF(SE is supplied in Tape & Reel (TR) packaging format, providing superior availability and production-scale quantities compared to the obsolete Cut Tape format of the original part. Both components maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) ratings, ensuring compatibility with standard manufacturing and storage protocols.

The active product status of TCR3RM28A,LF(SE ensures long-term supply chain viability and continued manufacturer support for technical documentation and quality assurance.

Frequently Asked Questions (FAQ)

Q: Can TCR3RM28A,LF(SE be used as a direct replacement for TCR3RM28A,LF in existing designs?

A: Yes. Both components share identical output voltage (2.8V), output current (300mA), input voltage rating (5.5V), package type (4-XDFN Exposed Pad), and protection features. The pinout and footprint are identical, enabling direct PCB substitution without design modification.

Q: What is the difference in dropout voltage between the main part and substitute?

A: The main part TCR3RM28A,LF specifies a maximum dropout voltage of 0.13V at 300mA, while the substitute TCR3RM28A,LF(SE specifies 0.15V at 300mA. This 0.02V difference is negligible for most applications and does not affect functional compatibility.

Q: Are there differences in packaging format between these parts?

A: The original TCR3RM28A,LF is supplied in Cut Tape (CT) & Digi-Reel® format, while the substitute TCR3RM28A,LF(SE is supplied in Tape & Reel (TR) format. Both formats contain the identical component; the difference is in the delivery and handling method. Tape & Reel format is standard for production-volume applications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both TCR3RM28A,LF and TCR3RM28A,LF(SE are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: Why is the original part listed as obsolete?

A: The TCR3RM28A,LF is obsolete due to manufacturer discontinuation. The TCR3RM28A,LF(SE remains in active production status, providing continued availability and manufacturer support for this voltage regulator specification.

Q: Are there additional control features in the substitute part?

A: The substitute TCR3RM28A,LF(SE includes Current Limit and Enable control features, which are not specified for the original TCR3RM28A,LF. These additional features provide enhanced functionality without compromising backward compatibility.

Q: What is the quiescent current specification for the substitute part?

A: The TCR3RM28A,LF(SE specifies a quiescent current (Iq) of 12 µA. This specification is not provided for the original part but represents typical low-power standby current consumption for this regulator class.