Toshiba Semiconductor and Storage TCR2EN115,LF(SE

Overview

TCR2EN115,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 1.15 V fixed-output CMOS low-dropout linear regulator in an ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), delivering up to 200 mA with 420 mV typical dropout at 150 mA load, ±1.0% output accuracy (for VOUT ≥ 1.8 V; 1.15 V falls under ±18 mV spec), and 35 µV_rms output noise. It integrates on/off control, auto-discharge, overcurrent protection, and supports ceramic input/output capacitors (0.1 µF/1.0 µF), targeting power rail regulation in space-constrained portable electronics.

For engineers reviewing the TCR2EN115,LF(SE) datasheet, TCR2EN115,LF(SE) pinout, TCR2EN115,LF(SE) application, or TCR2EN115,LF(SE) equivalent, key selection criteria include its 1.15 V fixed output, ultra-low quiescent current (35 µA typ.), fast load transient response (±55 mV), high ripple rejection (73 dB at 1 kHz), and compatibility with minimal external components in high-density PCB layouts.

Technical Context

The TCR2EN115,LF(SE) employs a CMOS-based LDO architecture with integrated P-channel pass transistor, enabling low dropout operation without requiring external compensation. Its control logic accepts TTL-compatible ON/OFF signals (V_CT(OFF) ≤ 0.4 V, V_CT(ON) ≥ 1.0 V) and activates internal auto-discharge when disabled, ensuring rapid output voltage decay.

Designed for stable operation with 0.1 µF ceramic input and 1.0 µF ceramic output capacitors, it achieves ±55 mV load transient response under 1 mA ↔ 150 mA step changes and maintains 73 dB ripple rejection at 1 kHz - critical for noise-sensitive analog and RF subsystems powered from noisy switching supplies.

Key Specifications

Pinout & Package

The TCR2EN115,LF(SE) uses the ultra-compact SDFN4/SDFN4E 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 TCR2EN115,LF(SE), the XC6219B112MR-G offers matching current and package size but lacks integrated control and discharge functions, while the BD3572EFJ-ME2 provides greater current headroom at the cost of significant area penalty and missing key low-power features.

Availability

TCR2EN115,LF(SE) is available at Aetrix Electronics and suitable for wearable electronics, medical patches, Bluetooth LE modules, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for TCR2EN115,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 expertise in analog, power, and logic ICs.

The TCR2EN series belongs to Toshiba's CMOS Linear Regulator product line, engineered specifically for ultra-compact, low-quiescent-current power management in battery-powered portable devices demanding minimal board area and high efficiency across wide load ranges.

FAQ

What is the guaranteed output voltage accuracy for TCR2EN115,LF(SE) at room temperature?

The TCR2EN115,LF(SE) guarantees output voltage accuracy of ±18 mV at I_OUT = 50 mA and T_j = 25°C, per its electrical characteristics table. This tolerance applies specifically to output voltages below 1.8 V, including the 1.15 V nominal value. The ±1.0% specification cited for the broader TCR2EN series only applies to versions with V_OUT ≥ 1.8 V, so TCR2EN115,LF(SE) adheres to the tighter absolute-millivolt error band rather than percentage-based accuracy.

Does TCR2EN115,LF(SE) require an external pull-up resistor on the CONTROL pin?

No, TCR2EN115,LF(SE) does not require an external pull-up resistor on the CONTROL pin. The device integrates an internal pull-down resistor between CONTROL and GND, ensuring the regulator remains disabled (OFF state) when the CONTROL pin is left unconnected or floating. This design eliminates risk of unintended enable during power-up sequencing or PCB handling, simplifying system-level control logic.

Can TCR2EN115,LF(SE) operate with a 1.5 V input voltage?

No, TCR2EN115,LF(SE) cannot regulate with a 1.5 V input. Its minimum input voltage is specified as 1.5 V in absolute maximum ratings, but functional operation requires VIN ≥ V_OUT + V_DO. With a 1.15 V output and 420 mV typical dropout at 150 mA, the minimum functional input is approximately 1.57 V. At 1.5 V input, the device enters dropout and cannot maintain regulated 1.15 V output under load - confirmed by the "Input voltage" parameter (Min = 1.5 V, but test condition specifies VIN = V_OUT + 1 V for electrical characteristics).

What is the thermal pad connection requirement for TCR2EN115,LF(SE)?

The center electrode (thermal pad) of the TCR2EN115,LF(SE) SDFN4/SDFN4E package must be soldered directly to a GND copper pour on the PCB. This connection serves dual purposes: it provides the primary thermal dissipation path (critical for maintaining junction temperature below 150°C at 200 mA) and establishes the low-impedance ground reference needed for stable regulation and noise suppression. Leaving the pad unconnected or floating will cause thermal overload and output instability.

Is TCR2EN115,LF(SE) RoHS compliant and lead-free?

Yes, TCR2EN115,LF(SE) is RoHS compliant and lead-free. The "LF" suffix in the part number explicitly denotes lead-free plating per JEDEC J-STD-609, and Toshiba confirms RoHS compliance for the entire TCR2EN series. The device meets EU Directive 2011/65/EU requirements and contains no restricted substances above threshold limits. Full compliance documentation, including material declarations and test reports, is available through Toshiba's official product portal.