Toshiba Semiconductor and Storage TCR2LN25,LF(SE

Overview

TCR2LN25,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 2.5 V fixed-output, 200 mA CMOS low dropout (LDO) regulator with ultra-low 2 μA quiescent current, 250 mV dropout at 150 mA load, and on/off control input - designed for power management in space-constrained portable electronics such as cellular phones and wearables.

For engineers reviewing the TCR2LN25,LF(SE) datasheet, TCR2LN25,LF(SE) pinout, TCR2LN25,LF(SE) application, or TCR2LN25,LF(SE) equivalent, key selection criteria include its SDFN4 package footprint (0.8 mm × 0.8 mm), ±1.0% output accuracy at 2.5 V, auto-discharge capability, and compatibility with 0.1 μF ceramic input/output capacitors.

Technical Context

The TCR2LN25,LF(SE) integrates a CMOS pass transistor with internal voltage reference, error amplifier, and overcurrent protection circuitry. Its control input enables active high enable logic (VCT(ON) = 1.0–5.5 V) and supports pull-down to GND for reliable shutdown.

It operates across −40°C to +85°C ambient temperature, delivers stable 2.5 V output with ≤30 mV load regulation (1–150 mA), and maintains ≤15 mV line regulation under VIN variation - all while sustaining ultra-low IB = 2 μA (max) at zero load and enabling rapid load transient response in battery-powered systems.

Key Specifications

Pinout & Package

SDFN4 package: ultra-small 4-pin plastic mold package (0.8 mm × 0.8 mm × 0.38 mm) with exposed thermal pad (center electrode); weight ≈ 0.6 mg. Mounting requires soldering center pad to GND plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCR2LN25,LF(SE), the XC6219B252MR-G offers lower quiescent current but requires 10× more PCB area and omits auto-discharge; the BD3572EFJ-ME2 provides robust thermal handling but doubles IQ and adds no functional advantage for compact, low-power designs.

Availability

TCR2LN25,LF(SE) is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, medical patch monitors, and industrial wireless nodes requiring stable component supply with guaranteed long-term sourcing.

Supply support for TCR2LN25,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-efficiency, miniaturized semiconductor solutions for consumer, industrial, and automotive markets - with emphasis on low-power analog and power management ICs.

The TCR2LN series targets ultra-compact, battery-sensitive applications; it was engineered specifically to replace larger LDOs in portable electronics by combining sub-2 μA IQ, SDFN4 packaging, and integrated auto-discharge in a single monolithic CMOS regulator.

FAQ

What is the maximum input voltage rating for TCR2LN25,LF(SE)?

The TCR2LN25,LF(SE) has an absolute maximum input voltage (VIN) of 6.0 V. However, its recommended operating range is 1.5 V to 5.5 V per electrical characteristics testing conditions. Exceeding 5.5 V may degrade reliability or trigger overvoltage stress, especially at elevated junction temperatures. Always maintain VIN within this range for stable 2.5 V output regulation in the TCR2LN25,LF(SE).

Does TCR2LN25,LF(SE) require external components for stable operation?

Yes - the TCR2LN25,LF(SE) requires 0.1 μF ceramic capacitors at both VIN and VOUT pins for stability and transient response, as specified in Toshiba's application note. These capacitors must be placed as close as possible to their respective pins. No additional compensation network or feedback resistors are needed since TCR2LN25,LF(SE) is a fixed-output device with internal regulation.

How does the CONTROL pin function in TCR2LN25,LF(SE)?

The CONTROL pin of TCR2LN25,LF(SE) is an active-high enable input: applying 1.0–5.5 V turns the regulator ON, while 0–0.4 V disables output and activates auto-discharge. An internal pull-down ensures default OFF state if left unconnected. This pin supports precise power sequencing and low-power sleep modes in systems using the TCR2LN25,LF(SE).

What is the thermal performance of TCR2LN25,LF(SE) in its SDFN4 package?

The TCR2LN25,LF(SE) in SDFN4 package has a rated power dissipation of 300 mW when mounted on a standard FR4 board (40 mm × 40 mm, 50% copper coverage). Its thermal pad must be soldered to a GND plane to achieve this rating. Junction temperature must remain ≤150°C; derating is required above 85°C ambient to maintain reliability of the TCR2LN25,LF(SE).

Is TCR2LN25,LF(SE) RoHS compliant and lead-free?

Yes - TCR2LN25,LF(SE) is RoHS compliant and lead-free, as confirmed by Toshiba's product documentation and environmental compliance statements. The "LF" suffix in the part number explicitly denotes lead-free plating, and the device meets EU RoHS Directive requirements for restricted substances. Full compliance data is available through Toshiba's official environmental reports.