Toshiba Semiconductor and Storage TCR2EN11,LF(SE

Overview

TCR2EN11,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 1.1 V fixed-output, 200 mA CMOS low-dropout (LDO) voltage regulator in an ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), featuring 420 mV typical dropout at 150 mA load, ±1.0% output accuracy (for VOUT ≥ 1.8 V; 1.1 V variant specified to ±18 mV), and 35 µV_rms output noise at 2.5 V - deployed in power rails for RF transceivers and sensor signal chains in space-constrained portable electronics.

For engineers reviewing the TCR2EN11,LF(SE) datasheet, TCR2EN11,LF(SE) pinout, TCR2EN11,LF(SE) application, or TCR2EN11,LF(SE) equivalent, this page delivers verified electrical parameters, validated SDFN4 pin mapping, confirmed auto-discharge and overcurrent protection behavior, and real-world transient response data (±55 mV load step) under 1.0 µF ceramic output capacitance - critical for battery-powered wearable and IoT endpoint designs.

Technical Context

The TCR2EN11,LF(SE) implements a CMOS-based LDO architecture with integrated P-channel pass transistor, enabling low quiescent current (35 µA typ.) and fast load transient recovery without external compensation. Its on/off control input supports active-low logic-level enable (V_CT(OFF) ≤ 0.4 V) and includes internal pull-down to GND.

Designed for high-density board assembly, it operates across −40°C to +85°C ambient, accepts input voltages from 1.5 V to 5.5 V, and maintains regulation down to 1.1 V output with 160–490 mV dropout depending on V_OUT and I_OUT; the 1.1 V variant exhibits 420 mV typical dropout at 150 mA per manufacturer characterization.

Key Specifications

Pinout & Package

TCR2EN11,LF(SE) is housed in the ultra-compact SDFN4/SDFN4E plastic mold package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight), optimized for high-density PCB layouts. The exposed center pad is electrically connected to GND and must be soldered to a thermal pad for optimal thermal performance and EMI suppression.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R1114N111B-TR-FE and MCP1702T-1102E/MB, the TCR2EN11,LF(SE) uniquely combines 200 mA capability, 0.8 mm × 0.8 mm footprint, and integrated auto-discharge - making it the only option that meets all three requirements simultaneously for next-generation compact battery-powered systems.

Availability

TCR2EN11,LF(SE) is available at Aetrix Electronics and suitable for wearable health monitors, IoT edge nodes, portable audio accessories, and industrial smart sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TCR2EN11,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 high-efficiency, miniaturized semiconductor solutions for consumer, industrial, and automotive markets, with over 50 years of analog and power management IC expertise.

The TCR2EN series targets ultra-compact, low-power portable electronics - delivering CMOS LDO regulators optimized for minimal board area, battery longevity, and noise-sensitive analog subsystems.

FAQ

What is the guaranteed output voltage tolerance for TCR2EN11,LF(SE) at room temperature?

The TCR2EN11,LF(SE) has a guaranteed output voltage tolerance of ±18 mV at I_OUT = 50 mA and T_j = 25°C, per its Electrical Characteristics table. This corresponds to ±1.64% of nominal 1.1 V output and applies specifically to variants with V_OUT < 1.8 V - distinct from the ±1.0% spec used for 1.8 V and higher outputs. The TCR2EN11,LF(SE) does not meet the tighter ±1.0% accuracy band.

Does TCR2EN11,LF(SE) require an external pull-down resistor on the CONTROL pin?

No, the TCR2EN11,LF(SE) integrates an internal pull-down resistor between CONTROL and GND, ensuring the regulator remains disabled when the CONTROL pin is left unconnected or floating. This eliminates the need for external components and guarantees a known power-up state - a key reliability feature confirmed in the Pin Assignment and Features sections of the official datasheet.

Can TCR2EN11,LF(SE) operate with a 1.2 V input voltage?

No, the TCR2EN11,LF(SE) requires a minimum input voltage of 1.5 V per its Absolute Maximum Ratings table. With a 1.1 V output and 420 mV typical dropout, the absolute minimum functional input is ~1.52 V. At 1.2 V input, the device cannot regulate and will drop out of specification - potentially causing system reset or brownout conditions in the load circuit.

What is the thermal performance of TCR2EN11,LF(SE) on a standard FR4 PCB?

On a 40 mm × 40 mm × 1.6 mm FR4 board with 50% copper coverage on both sides, the TCR2EN11,LF(SE) has a maximum power dissipation rating of 300 mW. Its ultra-small SDFN4 package (0.6 mg) relies on the exposed center pad soldered to a GND thermal pad for heat transfer - achieving junction-to-ambient thermal resistance (θ_JA) of approximately 417°C/W under those test conditions.

Is TCR2EN11,LF(SE) compatible with 100% ceramic output capacitors?

Yes, the TCR2EN11,LF(SE) is explicitly designed for use with ceramic output capacitors - including 1.0 µF X5R/X7R types - as confirmed in the Application Note and Features sections. Toshiba recommends selecting ceramics with ESR under 10 Ω to ensure stability; no additional series resistance or tantalum/electrolytic alternatives are required.