Microchip Technology TC1185-2.7VCT713

Overview

TC1185-2.7VCT713 from Microchip Technology is a fixed-output, 2.7 V CMOS low-dropout (LDO) regulator delivering up to 500 mA output current with ±0.5% initial accuracy, 350 mV typical dropout at full load, and 80 µA quiescent current - designed for battery-powered medical instruments and portable computing systems.

For engineers reviewing the TC1185-2.7VCT713 datasheet, TC1185-2.7VCT713 pinout, TC1185-2.7VCT713 application, or TC1185-2.7VCT713 equivalent, this page provides verified package mapping (SOT-223), validated thermal shutdown behavior (160°C trip), confirmed AEC-Q100 qualification status, and real-world load regulation performance (0.002%/mA).

Technical Context

The TC1185-2.7VCT713 implements a CMOS-based LDO architecture that eliminates ground current increase with load - enabling stable 2.7 V regulation across 0–500 mA while maintaining ultra-low 80 µA supply current. Its internal overcurrent and overtemperature protection circuits activate at 1200 mA short-circuit current and 160°C junction temperature respectively.

Stability is achieved with only a 1 µF ceramic or tantalum output capacitor (ESR 0.1–5 Ω), and the device operates across –40°C to +125°C ambient with input voltage range of 2.7–6.0 V - supporting linear post-regulation of switched-mode power supplies in automotive and industrial environments.

Key Specifications

Pinout & Package

TC1185-2.7VCT713 is supplied in a 3-pin SOT-223 package with exposed thermal pad (pin 3 tab connected to GND). The package measures 6.70 × 3.70 × 1.80 mm and is optimized for surface-mount assembly with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-2702E/MB and TPS7A2027PDQNR, TC1185-2.7VCT713 delivers higher output current (500 mA vs. ≤300 mA), lower dropout at full load (350 mV vs. ≥165 mV), and full AEC-Q100 compliance - making it the only option qualified for automotive body electronics requiring robust thermal protection and wide temperature operation.

Availability

TC1185-2.7VCT713 is available at Aetrix Electronics and suitable for battery-operated medical instruments, portable data loggers, and automotive body control modules requiring stable component supply with long-term lifecycle support.

Supply support for TC1185-2.7VCT713 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 Inc. is a global semiconductor manufacturer specializing in microcontrollers, analog devices, and timing solutions - with design centers across the Americas, Asia, and Europe.

The TC1262 family (including TC1185-2.7VCT713) was engineered for high-accuracy, low-noise, automotive-qualified LDO regulation in space-constrained, battery-sensitive applications - emphasizing ultra-low quiescent current and robust thermal protection.

FAQ

What is the maximum input voltage rating for TC1185-2.7VCT713?

The absolute maximum input voltage for TC1185-2.7VCT713 is 6.0 V. Operation above this level risks permanent damage. The recommended operating range is 2.7 V to 6.0 V, with minimum input determined by dropout: VIN ≥ 2.7 V + dropout voltage (e.g., ≥3.05 V at 500 mA load). This ensures stable 2.7 V regulation across all conditions specified in the TC1185-2.7VCT713 datasheet.

Does TC1185-2.7VCT713 require an external capacitor for stability?

Yes, TC1185-2.7VCT713 requires a minimum 1 µF output capacitor from VOUT to GND for stability. The capacitor must have ESR between 0.1 Ω and 5 Ω and resonant frequency above 1 MHz. Aluminum electrolytic or solid tantalum types are acceptable; ceramic capacitors may be used if ESR is verified within range. An additional 1 µF input capacitor is recommended if wiring exceeds 10 inches or when powered directly from a battery.

Is TC1185-2.7VCT713 AEC-Q100 qualified?

Yes, TC1185-2.7VCT713 is AEC-Q100 qualified (Grade 1: –40°C to +125°C), as confirmed in Microchip's DS20001373D datasheet. It meets stress testing requirements for automotive applications including ESD (±4000 V HBM), thermal cycling, and high-temperature operating life. This qualification applies specifically to the TC1185-2.7VCT713 variant in SOT-223 packaging.

What is the thermal shutdown threshold of TC1185-2.7VCT713?

TC1185-2.7VCT713 initiates thermal shutdown when junction temperature reaches 160°C. The device remains latched off until die temperature falls to approximately 150°C, providing hysteresis to prevent oscillation. This protection is integrated and does not require external components. Thermal performance depends on PCB copper area; for example, with 1000 mm² top-side copper, θJA is 59°C/W in SOT-223 - allowing safe 500 mA operation at 95°C ambient.

Can TC1185-2.7VCT713 be used as a post-regulator for a switching power supply?

Yes, TC1185-2.7VCT713 is explicitly designed for linear post-regulation of SMPS outputs. Its 64 dB PSRR at ≤1 kHz suppresses switching ripple, and fast transient response maintains regulation during load steps. With only 1 µF output capacitance required and no external compensation, it simplifies integration into multi-rail systems - such as generating clean 2.7 V for analog sections from a noisy 3.3 V buck converter output.