Microchip Technology TC2055-2.7VCTTR

Overview

TC2055-2.7VCTTR from Microchip Technology is a 100 mA, fixed-output CMOS low-dropout (LDO) voltage regulator in a 5-pin SOT-23A package, delivering ±0.4% output accuracy at 2.7 V with 140 mV typical dropout at full load and 55 µA quiescent current-designed for battery-powered medical instruments and portable communications devices.

For engineers reviewing the TC2055-2.7VCTTR datasheet, TC2055-2.7VCTTR pinout, TC2055-2.7VCTTR application, or TC2055-2.7VCTTR 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 compatibility with 1 µF ceramic output capacitors.

Technical Context

The TC2055-2.7VCTTR implements a CMOS-based LDO architecture optimized for ultra-low supply current across load range (0–100 mA), maintaining regulation without quiescent current increase under load-unlike legacy bipolar regulators. Its error amplifier drives an internal PMOS pass device with fast transient response and stable operation using only 1 µF ceramic output capacitance.

Shutdown control (SHDN) enables logic-level activation/deactivation, reducing supply current to ≤0.5 µA while disabling both VOUT and ERROR outputs. The open-drain ERROR pin asserts low when VOUT drops >5% below 2.7 V, with 50 mV hysteresis and 2 ms delay from VOUT excursion to ERROR assertion.

Key Specifications

Pinout & Package

TC2055-2.7VCTTR uses the 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 space-constrained portable PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-2702E/TO and TPS78027DRVR, TC2055-2.7VCTTR uniquely combines 100 mA drive, 55 µA IQ, integrated ERROR flag, and shutdown control in a standard 5-pin SOT-23A-enabling compact, self-monitoring power designs without added discrete components.

Availability

TC2055-2.7VCTTR is available at Aetrix Electronics and suitable for battery-operated medical instruments, portable cellular handsets, and industrial handheld testers requiring stable component supply with guaranteed long-term continuity.

Supply support for TC2055-2.7VCTTR 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 across wafer fabrication and design centers.

The TC2055-2.7VCTTR belongs to Microchip's precision CMOS LDO family, engineered specifically for extended battery life and reliable operation in portable, medical, and industrial edge devices.

FAQ

What is the minimum input voltage required for TC2055-2.7VCTTR to maintain regulation?

The TC2055-2.7VCTTR requires VIN ≥ 2.84 V to sustain 2.7 V output at 100 mA load, based on its 140 mV typical dropout voltage. At lighter loads, VIN may drop as low as 2.7 V (per Absolute Maximum Ratings), but regulation is only guaranteed when VIN exceeds VOUT + dropout. Below this threshold, the ERROR pin asserts low after 2 ms delay.

Does TC2055-2.7VCTTR require an external pull-up resistor on the ERROR pin?

Yes, TC2055-2.7VCTTR features an open-drain ERROR output and requires an external pull-up resistor (e.g., 100 kΩ to VIN or VOUT) to generate a valid logic-high signal. The ERROR pin sinks up to 18 mA when active low, enabling direct interfacing with microcontroller reset inputs or battery-low indicators without additional drivers.

Can TC2055-2.7VCTTR operate with a 1 µF ceramic capacitor on the output?

Yes, TC2055-2.7VCTTR is explicitly characterized and stabilized with a 1 µF ceramic output capacitor (ESR 0.05–5 Ω). This eliminates the need for larger tantalum or aluminum electrolytic capacitors, reducing cost, size, and temperature sensitivity-especially critical for operation below −25°C where aluminum electrolytics freeze.

What protection features are integrated into TC2055-2.7VCTTR?

TC2055-2.7VCTTR integrates overcurrent limiting, thermal shutdown at ~160°C with ~150°C turn-on hysteresis, and reverse-current blocking. It does not include input overvoltage or ESD protection-external TVS diodes are recommended if VIN may exceed 6.5 V or be exposed to transient events per IEC 61000-4-2.

How does the shutdown function affect TC2055-2.7VCTTR's output and ERROR behavior?

When SHDN is driven low, TC2055-2.7VCTTR disables its pass element: VOUT collapses to 0 V, ERROR becomes high-impedance (open-circuited), and supply current drops to ≤0.5 µA. Upon SHDN rising above VIH (≥60% VIN), VOUT rises to 2.7 V within 60 µs, and ERROR remains inactive until VOUT stabilizes and remains within tolerance.