Toshiba Semiconductor and Storage TCR3DM30,LF

Overview

TCR3DM30,LF from Toshiba Electronic Devices & Storage Corporation is a 3.0 V fixed-output CMOS low-dropout regulator delivering up to 300 mA with 180 mV typical dropout (at 300 mA), 38 μV_rms output noise, and inrush current protection - deployed as a primary power rail for RF transceivers and baseband ICs in cellular handsets.

For engineers reviewing the TCR3DM30,LF datasheet, TCR3DM30,LF pinout, TCR3DM30,LF application, or TCR3DM30,LF equivalent, this page delivers verified electrical specs, DFN4E package layout, load transient response data (±80 mV), and validated alternatives for portable power design validation and BOM optimization.

Technical Context

The TCR3DM30,LF integrates a CMOS pass transistor with internal error amplifier, reference voltage, and control logic enabling on/off operation via the CONTROL pin. Its architecture supports fast load transient recovery (50 μs/div response time) and stable regulation with only 1.0 μF ceramic input/output capacitors.

It implements three independent protection mechanisms: over-current shutdown, thermal foldback at 150°C junction temperature, and an active inrush current limiter that restricts peak input surge during power-up - all without external components.

Key Specifications

Pinout & Package

TCR3DM30,LF is housed in the ultra-compact DFN4E package (1.0 mm × 1.0 mm × 0.58 mm, 1.3 mg), featuring wettable flank terminals for automated optical inspection and enhanced solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TCR3DM30,LF, TCS2120-3.0 trades inrush protection and ultra-low I_Q for lower unit cost, while MCP1703T-3002E/MB sacrifices package size and integrated control for broader input voltage range (up to 16 V) - neither matches the combined miniaturization, transient response, and protection integration of TCR3DM30,LF in portable 3.0 V rail designs.

Availability

TCR3DM30,LF is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, and IoT cellular modems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for TCR3DM30,LF 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 consumer, industrial, and automotive markets, with expertise in analog, power, and logic ICs.

The TCR3DM series targets ultra-compact, low-noise power regulation in battery-powered portable electronics - emphasizing minimal footprint, fast transient response, and integrated protection for single-cell Li-ion systems.

FAQ

What is the maximum input voltage rating for TCR3DM30,LF?

The absolute maximum input voltage for TCR3DM30,LF is 6.0 V. However, the recommended operating range is 1.75 V to 5.5 V per electrical characteristics testing conditions. Exceeding 5.5 V may trigger overvoltage stress not covered by standard qualification, and sustained operation above this level risks accelerated parametric drift or thermal shutdown activation. Always maintain VIN within 5.5 V for reliable long-term use in production designs.

Does TCR3DM30,LF require external components for stability?

No, TCR3DM30,LF is internally compensated and stable with only 1.0 μF ceramic capacitors on both VIN and VOUT pins - no ESR requirements or external resistors needed. The datasheet confirms stability across all output voltages in the series using these values, and the DFN4E package's low parasitic inductance further enhances high-frequency phase margin. This eliminates BOM cost and layout complexity versus traditional LDOs requiring tantalum or aluminum electrolytic capacitors.

How does the inrush current protection function in TCR3DM30,LF?

The TCR3DM30,LF incorporates an active inrush current protection circuit that limits peak input current during power-up by controlling the gate drive slew rate of the internal CMOS pass transistor. This prevents large input capacitor charging surges that could trip upstream current-limiting circuits or cause voltage droop on shared rails. Unlike passive RC solutions, it operates autonomously without external components and resets automatically after startup completion.

What is the thermal performance of TCR3DM30,LF at full 300 mA load?

At 300 mA output and 85°C ambient, TCR3DM30,LF maintains safe operation with junction temperature below 120°C on a standard FR4 board (40 mm × 40 mm, 50% copper coverage). Its thermal resistance θ_JA is approximately 238°C/W, and the over-temperature protection activates only above 150°C junction temperature - providing 30°C design margin under worst-case conditions without derating.

Can TCR3DM30,LF be used with a 1.8 V input supply?

No - TCR3DM30,LF cannot regulate 3.0 V output from a 1.8 V input. Its minimum input voltage is defined by V_OUT + V_DO, and at 300 mA the dropout is 180 mV (typ.), requiring VIN ≥ 3.18 V. At 1.8 V input, the device enters dropout and cannot sustain regulated 3.0 V output. For 1.8 V input systems, consider lower-V_OUT variants like TCR3DM18 or alternative architectures such as buck-boost regulators.