Microchip Technology TC2054-5.0VCTTR

Overview

TC2054-5.0VCTTR from Microchip Technology is a 50 mA, fixed-output CMOS low-dropout (LDO) voltage regulator in a 5-pin SOT-23A package, delivering ±0.4% output accuracy at 5.0 V with 140 mV typical dropout at 150 mA and 55 µA quiescent current-designed for battery-powered medical instruments and portable computing systems.

For engineers reviewing the TC2054-5.0VCTTR datasheet, TC2054-5.0VCTTR pinout, TC2054-5.0VCTTR application, or TC2054-5.0VCTTR equivalent, key selection criteria include its shutdown-controlled 0.5 µA sleep current, open-drain ERROR flag for low-battery detection, thermal/overcurrent protection, and stable operation with 1 µF ceramic output capacitance.

Technical Context

The TC2054-5.0VCTTR implements a CMOS-based LDO architecture optimized for ultra-low supply current and fast transient response, replacing legacy bipolar regulators while maintaining pin compatibility. Its error amplifier drives an NMOS pass transistor with internal compensation, enabling regulation stability across 0–50 mA load without external components.

Shutdown control (SHDN) enables full device disablement with <0.5 µA supply current and open-circuited ERROR output; the ERROR pin asserts low when VOUT drops >5% below 5.0 V due to input undervoltage or overload-functioning as a reset signal or battery-fail indicator with 50 mV hysteresis and 2 ms delay.

Key Specifications

Pinout & Package

TC2054-5.0VCTTR uses a 5-pin SOT-23A surface-mount package (JEDEC MO-178AA), with 1.3 mm × 2.9 mm footprint and 1.0 mm height, optimized for high-density PCB layouts in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-5002E/TO and TPS76350DBVR, TC2054-5.0VCTTR uniquely combines diagnostic ERROR signaling, 140 mV dropout, and ±0.4% accuracy in a 50 mA SOT-23A package-making it optimal for battery-critical systems requiring both efficiency and fault visibility.

Availability

TC2054-5.0VCTTR is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial handheld scanners, and wearable health trackers requiring stable component supply across production lifecycles.

Supply support for TC2054-5.0VCTTR 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

Microchip Technology is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949:2002 certification for design and wafer fabrication.

The TC2054 family is part of Microchip's precision LDO portfolio designed specifically for battery-operated systems demanding ultra-low quiescent current, tight output tolerance, and integrated protection-targeting portable instrumentation and medical electronics.

FAQ

What is the maximum input voltage rating for TC2054-5.0VCTTR?

The absolute maximum input voltage for TC2054-5.0VCTTR is 6.5 V, with recommended operating range of 2.7 V to 6.0 V. Exceeding 6.5 V risks permanent damage per Microchip's Absolute Maximum Ratings. The minimum valid VIN depends on dropout: for 5.0 V output, VIN must be ≥5.14 V at full 50 mA load to maintain regulation. TC2054-5.0VCTTR incorporates overvoltage protection on all pins rated to VIN +0.3 V.

How does the ERROR pin function in TC2054-5.0VCTTR?

The ERROR pin on TC2054-5.0VCTTR is an open-drain output that pulls low when VOUT drops >5% below 5.0 V (i.e., <4.75 V), indicating undervoltage or overload. It features 50 mV hysteresis and 2 ms delay to prevent chatter. A pull-up resistor (e.g., 100 kΩ to VIN) is required. TC2054-5.0VCTTR sinks up to 18 mA when asserted, enabling direct interface to microcontroller reset inputs or battery-low indicators.

Can TC2054-5.0VCTTR operate with ceramic output capacitors?

Yes, TC2054-5.0VCTTR is explicitly characterized for stability with 1 µF ceramic output capacitors having ESR between 0.01 Ω and 5 Ω. This eliminates need for larger tantalum or aluminum electrolytics, reducing cost and board area. The datasheet confirms stability across temperature and load with X7R or X5R dielectrics; no series resistance or additional compensation is required for TC2054-5.0VCTTR.

What is the thermal shutdown behavior of TC2054-5.0VCTTR?

TC2054-5.0VCTTR activates thermal shutdown when die temperature exceeds ~160°C, disabling VOUT and ERROR while reducing supply current to <0.5 µA. It remains latched off until die cools to ~150°C, providing hysteresis to prevent cycling. The SOT-23A package has θ_JA ≈ 255°C/W; with proper PCB copper pour, TC2054-5.0VCTTR sustains 50 mA at 5.0 V output up to +85°C ambient without throttling.

Is TC2054-5.0VCTTR pin-compatible with older bipolar LDOs?

Yes, TC2054-5.0VCTTR is explicitly designed as a pin-compatible CMOS upgrade for legacy bipolar LDOs in SOT-23-5 packages. Its pinout (VIN-GND-SHDN-ERROR-VOUT) matches industry-standard footprints, allowing drop-in replacement without PCB changes. However, TC2054-5.0VCTTR requires no input bypass capacitor for basic operation (unlike many bipolar parts) and delivers 20× lower quiescent current than equivalents like LM2936.