Toshiba Semiconductor and Storage TCR2EN15,LF(SE

Overview

TCR2EN15,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 1.5 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 160 mV typical dropout at 150 mA load, 35 µV_rms output noise, and ±55 mV load transient response. It integrates on/off control, overcurrent protection, and auto-discharge for portable power management in space-constrained applications like cellular phone baseband ICs.

For engineers reviewing the TCR2EN15,LF(SE) datasheet, TCR2EN15,LF(SE) pinout, TCR2EN15,LF(SE) application, or TCR2EN15,LF(SE) equivalent, key selection criteria include its 1.5 V output accuracy (±1.0%), 35 µA typical quiescent current, 73 dB ripple rejection at 1 kHz, compatibility with 0.1 µF input / 1.0 µF ceramic output capacitors, and thermal performance under ambient temperatures from −40°C to +85°C.

Technical Context

The TCR2EN15,LF(SE) employs a CMOS-based LDO architecture with internal P-channel pass transistor, enabling low dropout voltage and fast transient recovery without requiring external compensation. Its control logic accepts TTL/CMOS-compatible ON/OFF signals (V_CT(ON) ≥ 1.0 V, V_CT(OFF) ≤ 0.4 V) and includes an integrated pull-down resistor between CONTROL and GND.

It operates across 1.5 V to 5.5 V input range with stable regulation down to 1.5 V output, supports ceramic capacitors with ESR < 10 Ω, and features built-in overcurrent protection that limits output current during fault conditions while maintaining safe junction temperature up to 150°C.

Key Specifications

Pinout & Package

TCR2EN15,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), featuring a bottom-exposed thermal pad (center electrode) 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 low-dropout regulator applications.

Compared with AP2112K-1.5TRG1 and MCP1700T-1502E/TT, the TCR2EN15,LF(SE) uniquely balances ultra-small size (0.64 mm²), 200 mA capability, 270 mV dropout, and 35 µA quiescent current-making it optimal for space- and power-constrained portable electronics where fast transient response and low noise are essential.

Availability

TCR2EN15,LF(SE) is available at Aetrix Electronics and suitable for mobile baseband power, wearable sensor hubs, IoT edge node MCUs, portable medical monitors, and other applications requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for TCR2EN15,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 components for consumer, industrial, and automotive markets, with expertise in analog, power, and logic ICs.

The TCR2EN series belongs to Toshiba's CMOS Linear Integrated Circuit line, engineered specifically for ultra-compact, low-noise, low-quiescent-current power regulation in portable and battery-powered electronic systems.

FAQ

What is the guaranteed output voltage accuracy of the TCR2EN15,LF(SE) across temperature and load?

The TCR2EN15,LF(SE) guarantees ±1.0% output voltage accuracy for 1.5 V output at I_OUT = 50 mA and T_j = 25°C per the Electrical Characteristics table. While the datasheet specifies ±18 mV (±1.2%) for V_OUT < 1.8 V, the 1.5 V variant is validated to meet ±1.0% under nominal conditions and maintains tight regulation across −40°C to +85°C ambient via 75 ppm/°C temperature coefficient. The TCR2EN15,LF(SE) achieves this using precision bandgap reference and CMOS error amplifier design.

Can the TCR2EN15,LF(SE) be used with only ceramic capacitors, and what are the recommended values?

Yes, the TCR2EN15,LF(SE) is fully compatible with ceramic capacitors: 0.1 µF at VIN and 1.0 µF at VOUT are the minimum recommended values per the Application Note. Toshiba specifies ESR < 10 Ω for stability, and standard X5R/X7R ceramics meet this requirement. These values ensure stable operation and achieve the specified ±55 mV load transient response. Larger output capacitance (e.g., 2.2 µF) further reduces ripple but is not required for basic functionality of the TCR2EN15,LF(SE).

What is the maximum input voltage the TCR2EN15,LF(SE) can tolerate, and what happens beyond that limit?

The TCR2EN15,LF(SE) has an absolute maximum input voltage rating of 6.0 V at T_a = 25°C. Operation above this level risks permanent damage to the internal CMOS pass transistor and control circuitry. Within normal operating range (1.5 V to 5.5 V), the device regulates stably; however, exceeding 6.0 V-even briefly-may cause gate oxide breakdown or latch-up. The TCR2EN15,LF(SE) does not include overvoltage protection, so external clamping (e.g., TVS diode) is advised if input transients exceed 6.0 V.

How does the CONTROL pin function, and what are the valid voltage thresholds for ON/OFF states?

The CONTROL pin of the TCR2EN15,LF(SE) is a logic-level enable input with internal pull-down to GND. It turns the regulator ON when voltage is ≥1.0 V (typical V_CT(ON)) and OFF when ≤0.4 V (typical V_CT(OFF)). In OFF state, quiescent current drops to 0.1 µA (typ.), and the auto-discharge function actively pulls VOUT to GND through an internal transistor. This behavior is confirmed in the Electrical Characteristics table and Application Note diagrams for the TCR2EN15,LF(SE).

Is the center thermal pad of the TCR2EN15,LF(SE) package electrically connected, and how should it be handled on the PCB?

Yes, the center electrode (thermal pad) of the TCR2EN15,LF(SE) in SDFN4/SDFN4E package is electrically connected to GND and must be soldered to a GND copper pour on the PCB. Per Package Dimensions drawings and Application Note guidance, this connection is mandatory-not optional-for thermal dissipation (enabling 300 mW power rating) and electrical stability. Leaving it unconnected or floating degrades thermal resistance by >50% and may cause oscillation or overtemperature shutdown in the TCR2EN15,LF(SE).