Toshiba Semiconductor and Storage TCR2EN27,LF(SE

Overview

TCR2EN27,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 2.7 V fixed-output CMOS low-dropout linear regulator in ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), delivering up to 200 mA with 160 mV dropout at 150 mA load, 35 µV_rms output noise, and ±55 mV load transient response. It serves as a precision power supply for RF front-ends and sensor signal chains in space-constrained portable electronics.

For engineers reviewing the TCR2EN27,LF(SE) datasheet, TCR2EN27,LF(SE) pinout, TCR2EN27,LF(SE) application, or TCR2EN27,LF(SE) equivalent, key selection criteria include its 2.7 V output accuracy (±1.0%), on/off control interface, Auto-discharge function, ceramic capacitor compatibility (C_IN = 0.1 µF, C_OUT = 1.0 µF), and junction temperature range of −40°C to 150°C.

Technical Context

The TCR2EN27,LF(SE) implements a CMOS-based LDO architecture with integrated overcurrent protection and an active pull-down circuit between CONTROL and GND. Its internal reference and error amplifier enable high DC accuracy and fast transient recovery without external compensation.

It operates with input voltages from 1.5 V to 5.5 V and supports ON/OFF control via a logic-level compatible CONTROL pin (V_CT(ON) ≥ 1.0 V, V_CT(OFF) ≤ 0.4 V), enabling system-level power sequencing and standby current reduction to 0.1 µA typical.

Key Specifications

Pinout & Package

The TCR2EN27,LF(SE) is housed in the ultra-small SDFN4/SDFN4E plastic mold package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight), featuring a bottom-exposed thermal pad that must be connected to GND for optimal thermal performance and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCR2EN27,LF(SE), the XC6219B271MR-G trades ultra-miniaturization for lower cost and broader availability, while the BD3985FVM-2.7TR offers higher current headroom at the expense of footprint and missing Auto-discharge-making TCR2EN27,LF(SE) optimal for space- and noise-critical battery-powered systems requiring precise power sequencing.

Availability

TCR2EN27,LF(SE) is available at Aetrix Electronics and suitable for portable medical devices, wearable electronics, wireless sensor networks, and IoT edge nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for TCR2EN27,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 solutions for consumer, industrial, and automotive markets, with emphasis on energy efficiency and miniaturization.

The TCR2EN series belongs to Toshiba's CMOS Linear Integrated Circuit line, engineered specifically for ultra-low-power, ultra-small-footprint applications in battery-operated portable electronics where minimal quiescent current, fast transient response, and ceramic capacitor compatibility are essential.

FAQ

What is the guaranteed output voltage accuracy of the TCR2EN27,LF(SE) across temperature?

The TCR2EN27,LF(SE) guarantees ±1.0% output voltage accuracy for 2.7 V output over the full operating temperature range of −40°C to +85°C, as specified in the Electrical Characteristics table under "Output voltage accuracy" with V_OUT ≥ 1.8 V. This accuracy is maintained without external trimming or calibration, supporting precision analog and RF circuits.

Does the TCR2EN27,LF(SE) require external components to operate stably?

Yes-the TCR2EN27,LF(SE) requires a 0.1 µF ceramic capacitor on VIN and a 1.0 µF ceramic capacitor on VOUT, both placed as close as possible to their respective pins. These capacitors ensure stability, transient response, and noise suppression. The device is optimized for ceramic types with ESR < 10 Ω and does not require additional compensation networks.

How does the Auto-discharge function work in the TCR2EN27,LF(SE)?

When the CONTROL pin is driven LOW (≤0.4 V), the TCR2EN27,LF(SE) disables regulation and activates an internal discharge path from VOUT to GND. This rapidly drains residual charge from the output capacitor, preventing unintended operation of downstream circuitry during system shutdown-critical for safety-critical and low-power wake-up architectures.

What is the maximum allowable input voltage for the TCR2EN27,LF(SE)?

The absolute maximum input voltage for the TCR2EN27,LF(SE) is 6.0 V, per the Absolute Maximum Ratings table. However, for reliable continuous operation, the recommended input voltage range is 1.5 V to 5.5 V. Exceeding 5.5 V may trigger overvoltage stress even if within absolute limits, especially at elevated temperatures.

Can the TCR2EN27,LF(SE) be used with a single-cell Li-ion battery?

Yes-the TCR2EN27,LF(SE) supports input voltages as low as 1.5 V and delivers stable 2.7 V output with only 160 mV dropout at 150 mA. When paired with a single-cell Li-ion (nominal 3.7 V, discharge range ~4.2 V to 2.8 V), it remains functional down to ~2.87 V input, covering >95% of the battery's usable voltage range without brownout.