Toshiba Semiconductor and Storage TCR2LN30,LF(SE

Overview

TCR2LN30,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 3.0 V fixed-output CMOS low dropout (LDO) voltage regulator with ultra-low quiescent current (2 μA max), 200 mA output capability, and 200 mV typical dropout voltage at 150 mA load-designed for power management in space-constrained portable electronics such as cellular phones and wearables.

For engineers reviewing the TCR2LN30,LF(SE) datasheet, TCR2LN30,LF(SE) pinout, TCR2LN30,LF(SE) application, or TCR2LN30,LF(SE) equivalent, key selection criteria include its SDFN4 ultra-small package (0.8 mm × 0.8 mm), ±1.0% output accuracy (for VOUT ≥ 1.8 V), auto-discharge function, and compatibility with 0.1 μF ceramic input/output capacitors.

Technical Context

The TCR2LN30,LF(SE) integrates an on/off control input with internal pull-down to GND, enabling precise enable/disable sequencing in battery-powered systems. Its CMOS architecture delivers stable regulation across −40°C to +85°C ambient temperature while maintaining low thermal dissipation under light-load conditions.

It features overcurrent protection and a dedicated discharge path (RSD = 20 Ω max) that actively discharges the output capacitor when disabled-critical for fast system power-down and preventing back-powering of upstream circuitry in multi-rail designs.

Key Specifications

Pinout & Package

The TCR2LN30,LF(SE) uses the SDFN4 ultra-small plastic mold package (0.8 mm × 0.8 mm × 0.38 mm, weight 0.6 mg), with exposed center electrode requiring connection to GND for thermal and electrical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with XC6219B302MR-G and BD3572EFJ-ME2, the TCR2LN30,LF(SE) uniquely balances ultra-small SDFN4 packaging, verified auto-discharge, and tight ±1.0% accuracy-making it optimal for miniaturized, battery-critical medical and wearable designs where board space and controlled shutdown behavior are non-negotiable.

Availability

TCR2LN30,LF(SE) is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, smartwatch display subsystems, and portable medical diagnostic devices requiring stable component supply with guaranteed long-term sourcing.

Supply support for TCR2LN30,LF(SE) includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Toshiba Electronic Devices & Storage Corporation designs and manufactures high-reliability semiconductor components, with expertise in power management, logic, memory, and discrete devices for industrial, automotive, and consumer markets.

The TCR2LN series targets ultra-low-power portable electronics-specifically engineered to replace legacy LDOs in space-constrained, battery-operated applications where quiescent current, package size, and fast shutdown behavior directly impact product lifetime and form factor.

FAQ

What is the maximum input voltage rating for the TCR2LN30,LF(SE)?

The TCR2LN30,LF(SE) has an absolute maximum input voltage (VIN) rating of 6.0 V. However, its recommended operating range is 1.5 V to 5.5 V per the Electrical Characteristics table. Exceeding 5.5 V may trigger overvoltage stress even if within absolute maximums, so system design should ensure VIN stays within the specified operating range during all conditions-including battery charging peaks or DC-DC ripple.

Does the TCR2LN30,LF(SE) require external components for stable operation?

Yes-the TCR2LN30,LF(SE) requires 0.1 μF ceramic capacitors at both VIN and VOUT pins for stability, as confirmed in the Application Note and Electrical Characteristics sections. These capacitors must be placed as close as possible to the device pins, with low-ESR (<10 Ω) recommended. No external resistors or compensation networks are needed due to its internally compensated CMOS architecture.

How does the auto-discharge function operate in the TCR2LN30,LF(SE)?

When the CONTROL pin is driven low (≤0.4 V), the TCR2LN30,LF(SE) disables regulation and activates an internal 20 Ω discharge path between VOUT and GND. This rapidly collapses the output voltage-critical for preventing back-powering of upstream circuitry or ensuring clean power-down sequencing in multi-rail systems. The discharge path remains active until CONTROL is returned high.

What is the thermal performance limit of the TCR2LN30,LF(SE) on a standard PCB?

On a 40 mm × 40 mm FR4 board (double-sided, 50% copper coverage, 1.6 mm thickness), the TCR2LN30,LF(SE) has a maximum power dissipation rating of 300 mW. At its 3.0 V output and 200 mA max load, worst-case power dissipation is (VIN − 3.0 V) × 200 mA. For example, at VIN = 5.5 V, PD = 500 mW-exceeding the rating-so thermal design must limit VIN or load current to stay within safe junction temperature (Tj ≤ 150°C).

Is the TCR2LN30,LF(SE) RoHS compliant and lead-free?

Yes-the TCR2LN30,LF(SE) is RoHS compliant and lead-free, as confirmed by Toshiba's official product documentation and environmental compliance statements. The "LF" in the part number explicitly denotes lead-free plating, and the device meets EU RoHS Directive requirements for restricted substances. Full compliance documentation is available through Toshiba's official website or authorized distribution channels.