Microchip Technology TC1107-5.0VOA

Overview

TC1107-5.0VOA from Microchip Technology is a fixed-output 5.0V CMOS low-dropout (LDO) regulator with ±0.5% output voltage accuracy, 300mA maximum output current, and ultra-low 50μA typical supply current. It features shutdown control, bypass input for noise reduction, and thermal/overcurrent protection-designed for battery-powered medical instruments and portable communication devices.

For engineers reviewing the TC1107-5.0VOA datasheet, TC1107-5.0VOA pinout, TC1107-5.0VOA application, or TC1107-5.0VOA equivalent, key selection criteria include dropout voltage at full load (270mV max), shutdown current (0.05μA typ), PSRR (60dB @ ≤1kHz), and stability with only 1μF output capacitance.

Technical Context

The TC1107-5.0VOA uses a CMOS pass element to achieve stable regulation across 0–300mA load without supply current increase-unlike legacy bipolar LDOs. Its reference bypass input accepts a 470pF capacitor to reduce internal reference noise, directly lowering output noise to 260nV/√Hz at 1kHz.

Shutdown is controlled by a logic-level input (VIH ≥ 45% VIN, VIL ≤ 15% VIN) that reduces supply current to 0.05μA and forces VOUT to 0V. Thermal shutdown activates at 150°C junction temperature, with automatic recovery at ~140°C.

Key Specifications

Pinout & Package

TC1107-5.0VOA is supplied in an 8-pin SOIC package (JEDEC MS-012AC, 3.99mm × 4.90mm body, 1.27mm pitch). Pin 1 is marked with a beveled corner or dot; thermal performance is optimized via PCB copper pour under exposed pad (if present) and wide ground traces.

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, TC1107-5.0VOA uniquely balances 300mA drive, 50μA IQ, and 270mV dropout-making it the only option among the three capable of powering moderate-current analog/RF subsystems while maintaining multi-year battery life.

Availability

TC1107-5.0VOA is available at Aetrix Electronics and suitable for battery-operated medical instruments, portable cellular handsets, and industrial portable instruments requiring stable component supply across extended production lifecycles.

Supply support for TC1107-5.0VOA 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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified wafer fabrication and assembly facilities.

The TC1107 product line delivers high-accuracy, ultra-low-IQ CMOS LDOs targeting long-life portable and medical electronics where precision, noise, and efficiency are critical system constraints.

FAQ

What is the minimum input voltage required for TC1107-5.0VOA to regulate at full 300mA load?

The TC1107-5.0VOA requires VIN ≥ VOUT + dropout voltage. At 300mA, max dropout is 270mV, so minimum VIN = 5.0V + 0.27V = 5.27V. Additionally, the datasheet specifies VIN ≥ 2.7V, but 5.27V governs under full load. Below this, output voltage drops out of regulation.

Can TC1107-5.0VOA operate without the Bypass (Pin 4) capacitor?

Yes, TC1107-5.0VOA functions normally without the 470pF capacitor on the Bypass pin. The capacitor is optional and only required when ultra-low output noise (e.g., for precision ADCs or RF synthesizers) is needed. Leaving Pin 4 unconnected maintains full regulation and protection functionality.

Does TC1107-5.0VOA require an input capacitor, and if so, what value is recommended?

While not strictly required for stability, TC1107-5.0VOA recommends a 1μF capacitor from VIN to GND when powered from batteries or when >10 inches of wire separates it from the main AC filter capacitor. This improves transient response and reduces input-borne noise coupling into the regulator.

What happens to the output voltage of TC1107-5.0VOA during shutdown mode?

When SHDN (Pin 5) is pulled low, TC1107-5.0VOA enters shutdown mode: VOUT falls to 0V, and supply current drops to 0.05μA typical. This ensures no residual voltage is present on downstream circuitry, preventing unintended leakage paths or partial activation of connected devices.

Is TC1107-5.0VOA stable with ceramic output capacitors, and what ESR range is acceptable?

Yes, TC1107-5.0VOA is stable with ceramic output capacitors. The datasheet specifies an output capacitor ESR between 0.1Ω and 5.0Ω. Standard X5R/X7R ceramics (typically 5–20mΩ ESR) are compatible when used with a series resistor or selected for higher-ESR variants to meet the lower bound.