TCR2LN18,LSF(SE Linear Voltage Regulator

Part Overview

The TCR2LN18,LSF(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 LDO (Low Dropout) regulator with a fixed output voltage of 1.8V and maximum output current of 200mA. The part is currently in active production status and is available in surface mount packaging (4-SDFN 0.8x0.8mm). Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and regulatory compliance to support component procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer	Toshiba Semiconductor and Storage
Series	TCR2LN
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	1.8V
Voltage - Input (Max)	5.5V
Current - Output	200mA
Voltage Dropout (Max)	0.6V @ 150mA
Current - Quiescent (Iq)	2 µA
Control Features	Enable
Protection Features	Over Current
Operating Temperature	-40°C ~ 85°C (TJ)
Package / Case	4-XFDFN Exposed Pad
Supplier Device Package	4-SDFN (0.8x0.8)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TCR2LN18,LSF(SE are identified based on strict equivalence across the following critical parameters:

Matching Criteria:

Manufacturer: Toshiba Semiconductor and Storage
Series: TCR2LN
Package Type: 4-SDFN (0.8x0.8) with Exposed Pad
Mounting Type: Surface Mount
Output Configuration: Positive
Output Type: Fixed
Current - Output: 200mA
Voltage - Input (Max): 5.5V
Voltage Dropout (Max): 0.6V @ 150mA
Current - Quiescent (Iq): 2 µA
Control Features: Enable
Protection Features: Over Current
Operating Temperature: -40°C ~ 85°C (TJ)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute part TCR2LN18,LF(SE shares all critical electrical and mechanical parameters with the main part, ensuring direct functional compatibility within the same application context.

Parameter Comparison

Parameter	TCR2LN18,LSF(SE	TCR2LN18,LF(SE
Manufacturer	Toshiba Semiconductor and Storage	Toshiba Semiconductor and Storage
Series	TCR2LN	TCR2LN
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Voltage - Output (Min/Fixed)	1.8V	1.8V
Voltage - Input (Max)	5.5V	5.5V
Current - Output	200mA	200mA
Voltage Dropout (Max)	0.6V @ 150mA	0.6V @ 150mA
Current - Quiescent (Iq)	2 µA	2 µA
Control Features	Enable	Enable
Protection Features	Over Current	Over Current
Operating Temperature	-40°C ~ 85°C (TJ)	-40°C ~ 85°C (TJ)
Package / Case	4-XFDFN Exposed Pad	4-XFDFN Exposed Pad
Supplier Device Package	4-SDFN (0.8x0.8)	4-SDFN (0.8x0.8)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both the TCR2LN18,LSF(SE and TCR2LN18,LF(SE are active production parts from Toshiba Semiconductor and Storage, ensuring long-term availability and supply chain stability. Both parts carry ROHS3 compliance and are unaffected by REACH regulations, meeting current environmental and regulatory requirements for industrial and commercial applications.

The parts are electrically and mechanically identical across all specified parameters. Selection between these parts is based on packaging format designation and supplier inventory availability. Both parts are classified under ECCN EAR99 and HTSUS 8542.39.0001, indicating equivalent export and tariff classification.

The TCR2LN18,LSF(SE is suitable for applications requiring a 1.8V fixed output LDO regulator with 200mA output current capacity, low quiescent current (2 µA), and integrated over-current protection. The 4-SDFN package with exposed pad provides thermal management and compact board layout integration for surface mount assembly.

Frequently Asked Questions (FAQ)

Q: Can TCR2LN18,LF(SE be used as a direct replacement for TCR2LN18,LSF(SE?

A: Yes. Both parts share identical electrical specifications, package dimensions (4-SDFN 0.8x0.8mm), and functional characteristics. The difference in part number designation reflects packaging format or supplier variant coding only. Direct substitution is supported without circuit modification.

Q: What is the significance of the packaging designation difference between LSF and LF?

A: The LSF and LF designations indicate different packaging format codes assigned by Toshiba or the supplier. Both refer to the same 4-SDFN (0.8x0.8) surface mount package with exposed pad. The electrical and mechanical specifications remain identical.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both TCR2LN18,LSF(SE and TCR2LN18,LF(SE operate across the identical temperature range of -40°C to 85°C (junction temperature). No thermal performance differences exist between the parts.

Q: What output voltage does this regulator provide?

A: The TCR2LN18,LSF(SE provides a fixed output voltage of 1.8V with a maximum output current of 200mA. The output voltage is not adjustable.

Q: Is this regulator suitable for battery-powered applications?

A: Yes. The quiescent current of 2 µA is sufficiently low for battery-powered applications where standby current consumption is a design consideration. The enable control feature allows the regulator to be powered down when not in use.

Q: What is the maximum input voltage for this regulator?

A: The maximum input voltage is 5.5V. Input voltages exceeding this specification may damage the device.

Q: Does this regulator include protection features?

A: Yes. The TCR2LN18,LSF(SE includes integrated over-current protection to prevent damage during output short-circuit conditions.

Q: What is the dropout voltage at full load?

A: The maximum dropout voltage is 0.6V at 150mA output current. At lower output currents, the dropout voltage will be reduced.

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