TCR3RM09A,LF Linear Voltage Regulator IC

Part Overview

The TCR3RM09A,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 regulator delivering 300mA at 0.9V output with a maximum input voltage of 5.5V and dropout voltage of 0.13V at full load current. The part is currently listed as obsolete, necessitating identification of active substitute components to maintain design continuity and ensure ongoing component availability for production and field support applications.

Key Parameters

Parameter	Value
Manufacturer	Toshiba Semiconductor and Storage
Series	TCR3RM
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	0.9V
Voltage - Input (Max)	5.5V
Current - Output	300mA
Voltage Dropout (Max)	0.13V @ 300mA
Package / Case	4-XDFN Exposed Pad
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the TCR3RM09A,LF is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Output voltage: 0.9V fixed
Maximum output current: 300mA
Maximum input voltage: 5.5V
Output configuration: Positive
Protection features: Over Current and Over Temperature

Mechanical Equivalence Criteria:

Package type: 4-XDFN Exposed Pad
Mounting type: Surface Mount
Pin count and footprint compatibility

Compliance Criteria:

RoHS3 compliance
Operating temperature range: -40°C ~ 85°C

The substitute part TCR3RM09A,LF(SE meets all electrical and mechanical equivalence requirements while maintaining active product status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Parameter	TCR3RM09A,LF (Main Part)	TCR3RM09A,LF(SE (Substitute)
Manufacturer	Toshiba Semiconductor and Storage	Toshiba Semiconductor and Storage
Series	TCR3RM	TCR3RM
Product Status	Obsolete	Active
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Voltage - Output (Min/Fixed)	0.9V	0.9V
Voltage - Input (Max)	5.5V	5.5V
Current - Output	300mA	300mA
Number of Regulators	1	1
Package / Case	4-XDFN Exposed Pad	4-XDFN Exposed Pad
Supplier Device Package	4-DFNC (1x1)	4-DFNC (1x1)
Mounting Type	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8542.39.0001	8542.39.0001

Engineering Selection Recommendations

The TCR3RM09A,LF(SE is the direct substitute for the obsolete TCR3RM09A,LF. Both components are manufactured by Toshiba Semiconductor and Storage within the same TCR3RM series and share identical electrical specifications, package geometry, and compliance certifications.

Selection Basis:

The substitute part maintains full compatibility across all critical parameters: 0.9V fixed output voltage, 300mA output current capability, 5.5V maximum input voltage, and 4-XDFN surface mount package. Both parts are ROHS3 compliant with MSL 1 rating and identical operating temperature ranges of -40°C to 85°C.

The primary distinction is product status: the main part is obsolete while the substitute is active. This transition ensures continued component availability, supply chain reliability, and manufacturer support for new designs and production requirements.

The substitute part is suitable for direct replacement in existing designs without circuit modification, provided the application requirements align with the specified electrical and thermal parameters.

Frequently Asked Questions (FAQ)

Q: Can TCR3RM09A,LF(SE be used as a direct replacement for TCR3RM09A,LF?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical output voltage (0.9V), output current (300mA), input voltage rating (5.5V), package type (4-XDFN), and protection features. The substitute is the active production equivalent of the obsolete part.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging format and product status. TCR3RM09A,LF is supplied in Cut Tape (CT) & Digi-Reel® format and is obsolete. TCR3RM09A,LF(SE is supplied in Tape & Reel (TR) format and maintains active product status. Both use the same 4-DFNC (1x1) device package.

Q: Are there any electrical performance differences?

A: The substitute part includes additional control features (Current Limit and Enable) and specifies quiescent current (12 µA) not listed for the main part. All core electrical specifications—output voltage, output current, input voltage, and protection features—are identical.

Q: Is the footprint identical between these parts?

A: Yes. Both parts use the 4-XDFN Exposed Pad package with 4-DFNC (1x1) supplier device package designation. PCB layout and reflow profiles remain unchanged.

Q: What are the compliance and certification implications?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. ECCN and HTSUS classifications are identical, ensuring equivalent regulatory and export compliance.

Q: Should I update my bill of materials?

A: Yes. Since the original part is obsolete, updating the bill of materials to TCR3RM09A,LF(SE ensures long-term supply chain continuity and eliminates obsolescence risk for future production runs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message