Toshiba Semiconductor and Storage TCR2EF115,LM(CT

Overview

TCR2EF115,LM(CT) from Toshiba Electronic Devices & Storage Corporation is a 1.15 V fixed-output, 200 mA CMOS low dropout regulator with on/off control input, 440 mV typical dropout at 150 mA load, 35 μVrms output noise, and ±60 mV load transient response (1 mA ↔ 150 mA). It delivers stable bias for RF front-ends and precision analog signal chains in portable instrumentation.

For engineers reviewing the TCR2EF115,LM(CT) datasheet, TCR2EF115,LM(CT) pinout, TCR2EF115,LM(CT) application, or TCR2EF115,LM(CT) equivalent, key selection criteria include dropout voltage at 1.15 V output, auto-discharge functionality, ceramic capacitor compatibility (CIN = 0.1 μF, COUT = 1.0 μF), and SOT-553 package thermal performance under -40°C to +85°C operation.

Technical Context

The TCR2EF115,LM(CT) employs a CMOS pass transistor architecture enabling ultra-low quiescent current (35 μA typ.) and fast load transient recovery without external compensation. Its internal overcurrent protection and pull-down CONTROL-to-GND logic ensure safe shutdown during fault conditions.

Designed for single-supply systems with tight input margins, it operates from VIN = 1.5 V to 5.5 V and maintains ±1.0% output accuracy for VOUT ≥ 1.8 V - though at 1.15 V output, accuracy is specified as ±18 mV. The device supports ceramic output capacitors with ESR < 10 Ω and requires no external components beyond CIN/COUT for stability.

Key Specifications

Pinout & Package

TCR2EF115,LM(CT) is packaged in ESV (SOT-553), a 1.6 mm × 1.6 mm × 0.55 mm surface-mount package weighing 3.0 mg (typ.). This ultra-compact footprint supports high-density PCB layouts in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout regulator applications.

Compared with TCR2EF115,LM(CT), the TCS2EF115,LM(CT) offers identical performance in a drop-in compatible form, while the MCP1700T-115I/TT trades size and dropout for broader distributor availability - making TCR2EF115,LM(CT) optimal for miniaturized, battery-critical designs demanding lowest possible input voltage headroom.

Availability

TCR2EF115,LM(CT) is available at Aetrix Electronics and suitable for portable instrumentation, wearable health monitors, RF test equipment, and industrial I/O modules requiring stable component supply with guaranteed long-term sourcing.

Supply support for TCR2EF115,LM(CT) 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 solutions for industrial, automotive, and consumer applications, with expertise in analog, power, and logic ICs.

The TCR2EF series targets space- and power-constrained systems needing ultra-low-noise, fast-transient LDOs - especially in RF, precision analog, and battery-powered edge devices.

FAQ

What is the maximum input voltage rating for TCR2EF115,LM(CT)?

The absolute maximum input voltage for TCR2EF115,LM(CT) is 6.0 V. However, the recommended operating range is VIN = 1.5 V to 5.5 V. Exceeding 5.5 V may trigger overvoltage stress not covered by warranty, even if within absolute maximum ratings. Always maintain VIN ≤ VOUT + 1.0 V for optimal dropout and thermal performance in production use of TCR2EF115,LM(CT).

Does TCR2EF115,LM(CT) require an external resistor for CONTROL pin biasing?

No, TCR2EF115,LM(CT) includes an internal pull-down between CONTROL and GND, so no external resistor is needed for default OFF-state behavior. When driven actively, CONTROL accepts 0–5.5 V logic levels, with ON threshold ≥1.0 V and OFF threshold ≤0.4 V. This integrated pull-down simplifies power sequencing design and reduces BOM count in systems using TCR2EF115,LM(CT).

Can TCR2EF115,LM(CT) be used with tantalum output capacitors?

Tantalum capacitors are not recommended for TCR2EF115,LM(CT). The datasheet explicitly specifies ceramic capacitors (COUT ≥ 1.0 μF, ESR < 10 Ω) for stability and transient response. Tantalum types exhibit higher ESR and potential failure modes under surge current that may destabilize the control loop or trigger overcurrent protection. For reliable operation, always use X5R/X7R ceramic capacitors with TCR2EF115,LM(CT).

What is the output voltage accuracy specification for TCR2EF115,LM(CT) at room temperature?

At 25°C and IOUT = 50 mA, TCR2EF115,LM(CT) guarantees output voltage accuracy of ±18 mV (±1.57%) for its 1.15 V nominal output. This tolerance reflects the VOUT < 1.8 V category in Toshiba's Electrical Characteristics table. Accuracy degrades slightly over temperature: ±100 ppm/°C TCVO contributes up to ±8.5 mV drift across −40°C to +85°C, resulting in total variation of approximately ±26.5 mV in full operating range.

Is thermal derating required for TCR2EF115,LM(CT) in a 2-layer PCB design?

Yes - thermal derating is essential. On a standard 2-layer FR4 board (30 mm × 30 mm × 0.8 mm, 20 mm² copper), TCR2EF115,LM(CT) in ESV package has a board-mounted power dissipation limit of 320 mW. At 150 mA load and 440 mV dropout, power dissipation is 66 mW, well within limit. But at 200 mA and worst-case 770 mV dropout (per datasheet max), dissipation reaches 154 mW - still safe, provided ambient stays ≤70°C. Always apply 20–30% margin below rated PD in production use of TCR2EF115,LM(CT).