Microchip Technology TC2055-5.0VCTTR

Overview

TC2055-5.0VCTTR from Microchip Technology is a 100 mA, 5.0 V fixed-output CMOS low-dropout (LDO) regulator in a 5-pin SOT-23A package. It delivers ±0.4% output voltage accuracy, 140 mV typical dropout at 150 mA, 55 µA typical supply current, and features an open-drain ERROR flag and logic-controlled shutdown - optimized for battery-powered medical instruments and portable communications devices.

For engineers reviewing the TC2055-5.0VCTTR datasheet, TC2055-5.0VCTTR pinout, TC2055-5.0VCTTR application, or TC2055-5.0VCTTR equivalent, key selection criteria include dropout performance at full load, shutdown current (<0.5 µA), ERROR threshold hysteresis (50 mV), thermal shutdown at 160°C, and compatibility with 1 µF ceramic output capacitors.

Technical Context

The TC2055-5.0VCTTR implements a CMOS-based LDO architecture with internal reference and error amplifier, delivering stable regulation across 0–100 mA load while maintaining ultra-low quiescent current independent of load. Its ERROR output asserts low when VOUT drops >5% below 5.0 V, with 50 mV hysteresis and 2 ms delay from VOUT deviation to ERROR activation.

Shutdown control is TTL/CMOS-compatible (VIH ≥ 60% VIN, VIL ≤ 15% VIN), enabling direct interfacing with microcontroller I/O. The device remains stable with 1 µF ceramic output capacitance (ESR 0.01–5 Ω) and incorporates overcurrent and overtemperature protection with automatic recovery after die cooling to ~150°C.

Key Specifications

Pinout & Package

TC2055-5.0VCTTR is housed in a space-saving 5-pin SOT-23A package (JEDEC MO-178AA, EIAJ SC-74A), with exposed pad not electrically connected. Thermal resistance θJA is 255°C/W on standard FR-4 PCB.

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, TC2055-5.0VCTTR uniquely balances ultra-low IQ (55 µA), precise ERROR flag behavior (5% threshold + hysteresis), and 140 mV dropout - making it optimal for long-life, battery-critical systems where diagnostic signaling and minimal voltage headroom are both essential.

Availability

TC2055-5.0VCTTR is available at Aetrix Electronics and suitable for portable medical sensors, cellular handsets, handheld test instruments, and industrial data loggers requiring stable component supply with consistent parametric performance across temperature and load.

Supply support for TC2055-5.0VCTTR 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 across design and wafer fabrication facilities.

The TC205x family was designed as CMOS-based LDO upgrades for legacy bipolar regulators - targeting battery-operated systems where low IQ, high accuracy, and integrated diagnostics (ERROR/shutdown) are critical.

FAQ

What is the maximum input voltage rating for TC2055-5.0VCTTR?

The absolute maximum input voltage for TC2055-5.0VCTTR is 6.5 V. Continuous operation above 6.0 V is not recommended per electrical specifications; the device is rated for 2.7–6.0 V input under normal conditions. Exceeding 6.5 V may cause permanent damage, and operation near the absolute maximum requires careful thermal and layout design to ensure reliability.

Does TC2055-5.0VCTTR require an external pull-up resistor on the ERROR pin?

Yes, TC2055-5.0VCTTR requires an external pull-up resistor on the ERROR pin because it is an open-drain output. A typical value is 100 kΩ to VOUT or VIN (≤ VIN + 0.3 V). This ensures a defined high state when ERROR is inactive and enables wired-OR configurations or direct interfacing with microcontroller interrupts.

Can TC2055-5.0VCTTR operate with a 1 µF ceramic output capacitor?

Yes, TC2055-5.0VCTTR is explicitly characterized and guaranteed stable with a minimum 1 µF ceramic output capacitor (ESR 0.01–5 Ω). This eliminates the need for larger tantalum or electrolytic capacitors, reducing cost, footprint, and aging-related failure risks in long-life battery applications.

What is the typical response time for TC2055-5.0VCTTR to exit shutdown mode?

The typical response time for TC2055-5.0VCTTR to reach 95% of 5.0 V after SHDN transitions high is 60 µs, measured with VIN = 4 V, CIN = 1 µF, COUT = 10 µF, and IL = 0.1 mA. This fast wake-up supports dynamic power gating in real-time systems without introducing latency penalties.

How does the ERROR output behave during thermal shutdown?

During thermal shutdown, TC2055-5.0VCTTR's ERROR output goes low (asserted) because VOUT falls out of regulation - consistent with its specification as an out-of-regulation flag. The ERROR pin remains low until VOUT recovers to within 5% of 5.0 V (i.e., above 4.75 V) and stays asserted through the entire thermal shutdown event and cooldown period.