Toshiba Semiconductor and Storage TCR2EE145,LM(CT

Overview

TCR2EE145,LM(CT from Toshiba Electronic Devices & Storage Corporation is a 1.45 V fixed-output CMOS low dropout (LDO) regulator delivering up to 200 mA with 180 mV typical dropout at 150 mA, 35 μV_rms output noise, and ±60 mV load transient response (1 mA ⇔ 150 mA, C_OUT = 1.0 μF). It features overcurrent protection, auto-discharge, and on/off control input - optimized for analog/RF power rails in portable instrumentation and wireless sensor nodes.

For engineers reviewing the TCR2EE145,LM(CT) datasheet, TCR2EE145,LM(CT) pinout, TCR2EE145,LM(CT) application, or TCR2EE145,LM(CT) equivalent, key selection criteria include dropout voltage at 150 mA, output accuracy (±1.0% for V_OUT ≥ 1.8 V; ±18 mV for 1.45 V), thermal performance in ESV (SOT-553), and compatibility with 0.1 μF input / 1.0 μF ceramic output capacitors.

Technical Context

The TCR2EE145,LM(CT) employs a CMOS pass transistor architecture enabling ultra-low quiescent current (35 μA typ. at I_OUT = 0 mA) and high ripple rejection (73 dB typ. at 1 kHz). Its control logic accepts 0–0.4 V for OFF and 1.0–5.5 V for ON states, with internal pull-down between CONTROL and GND.

Designed for stable operation with minimal external components, it supports ceramic capacitors (ESR < 10 Ω recommended), requires no external compensation, and maintains regulation across −40°C to +85°C ambient while limiting junction temperature to 150°C. Dropout voltage is 310 mV typ. at 150 mA for 1.45 V output.

Key Specifications

Pinout & Package

TCR2EE145,LM(CT) is packaged in ESV (SOT-553), measuring 1.6 mm × 1.6 mm × 0.55 mm with 3.0 mg typical weight - optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCR2EE145,LM(CT), the XC6219B142MR-G offers lower cost but reduced transient robustness and current capacity, while the BD3571GUL provides superior thermal and electrical margins at the expense of board area and sourcing complexity.

Availability

TCR2EE145,LM(CT) is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical wearables, industrial field transmitters, and low-noise audio biasing requiring stable component supply across extended production lifecycles.

Supply support for TCR2EE145,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 high-reliability semiconductor solutions for industrial, automotive, and consumer applications, with emphasis on efficiency, miniaturization, and system-level integration.

The TCR2EE series belongs to Toshiba's CMOS LDO regulator product line, engineered specifically for noise-sensitive analog and RF power domains where low dropout, ultra-low noise, and fast transient response are critical.

FAQ

What is the guaranteed output voltage accuracy for TCR2EE145,LM(CT) at 50 mA load?

The TCR2EE145,LM(CT) guarantees ±18 mV output voltage accuracy at I_OUT = 50 mA and T_j = 25°C, as specified in the Electrical Characteristics table (Note 6). This tolerance applies because the nominal 1.45 V output falls below the 1.8 V threshold where ±1.0% accuracy is specified - confirming its suitability for precision low-voltage analog circuits where absolute voltage stability matters more than percentage error.

Can TCR2EE145,LM(CT) operate with only ceramic capacitors, and what are the minimum values?

Yes, TCR2EE145,LM(CT) is fully compatible with ceramic capacitors: minimum C_IN = 0.1 μF and minimum C_OUT = 1.0 μF, both placed as close as possible to their respective pins. Toshiba explicitly recommends ceramic types with ESR < 10 Ω to ensure stability - eliminating the need for tantalum or electrolytic alternatives and reducing board area and cost in space-constrained designs using TCR2EE145,LM(CT).

What is the maximum allowable input voltage for TCR2EE145,LM(CT), and what happens above that limit?

The absolute maximum input voltage for TCR2EE145,LM(CT) is 6.0 V (per Absolute Maximum Ratings). Operation above this level risks permanent damage to the CMOS pass element. The recommended operating range is VIN = 1.5–5.5 V; exceeding 5.5 V - even briefly - violates the safe operating area and voids reliability guarantees. Designers must ensure upstream sources (e.g., DC/DC outputs or battery stacks) stay within this window when using TCR2EE145,LM(CT).

How does the CONTROL pin function in TCR2EE145,LM(CT), and is an external pull-down required?

TCR2EE145,LM(CT) integrates an internal pull-down resistor between CONTROL and GND, so no external component is needed. A voltage of 0–0.4 V places the device in standby (I_B(OFF) ≤ 1.0 μA), while 1.0–5.5 V enables regulation. This simplifies power sequencing in multi-rail systems and ensures fail-safe OFF behavior during MCU reset or unpowered states - a key reliability feature confirmed in the Pin Assignment and Electrical Characteristics sections for TCR2EE145,LM(CT).

What thermal derating applies to TCR2EE145,LM(CT) in its ESV (SOT-553) package?

In the ESV (SOT-553) package, TCR2EE145,LM(CT) has a board-mounted power dissipation rating of 320 mW on a 30 mm × 30 mm × 0.8 mm FR4 board (Note 3). Ambient temperature rise reduces usable power linearly: at 85°C ambient, maximum continuous dissipation drops to ~180 mW. Designers must calculate P_D = (V_IN − 1.45 V) × I_OUT and verify it stays within this derated limit - especially critical in sealed enclosures where TCR2EE145,LM(CT) operates near its 150°C junction limit.