Microchip Technology TC1107-2.5VUATR

Overview

TC1107-2.5VUATR from Microchip Technology is a fixed-output 2.5V CMOS low-dropout (LDO) linear regulator with shutdown control, delivering up to 300mA output current, ±0.5% output voltage accuracy, and ultra-low 50μA typical quiescent current. It features a 240mV typical dropout at full load, over-temperature and over-current protection, and operates across –40°C to +125°C for battery-powered medical instruments and portable communications devices.

For engineers reviewing the TC1107-2.5VUATR datasheet, TC1107-2.5VUATR pinout, TC1107-2.5VUATR application, or TC1107-2.5VUATR equivalent, key selection criteria include its MSOP-8 package, 2.5V fixed output, shutdown functionality, bypass-capable reference, and compatibility with 1μF minimum output capacitance in space-constrained, low-noise systems.

Technical Context

The TC1107-2.5VUATR uses a CMOS-based pass element enabling stable regulation from 0mA to 300mA without supply current increase - unlike legacy bipolar LDOs. Its internal reference includes a dedicated Bypass pin (Pin 4), accepting a 470pF capacitor to reduce output noise by suppressing reference ripple.

Shutdown is implemented via a logic-level SHDN input (Pin 5) with VIH ≥ 45% VIN and VIL ≤ 15% VIN, reducing supply current to 0.05μA typical and forcing VOUT to 0V. Thermal shutdown activates at ~150°C junction temperature, with automatic recovery at ~140°C.

Key Specifications

Pinout & Package

TC1107-2.5VUATR is housed in an 8-pin MSOP package (3.0mm × 3.0mm × 1.1mm height), optimized for high-density PCB layouts and thermal performance (θ_JA ≈ 200°C/W). The package includes exposed pad for enhanced heat dissipation (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1700-2502E/TO and TPS76325DBVR, TC1107-2.5VUATR uniquely balances 300mA drive, 240mV dropout, and 50μA I_Q in an MSOP-8 package - making it optimal for mid-power portable systems needing both efficiency and robustness.

Availability

TC1107-2.5VUATR is available at Aetrix Electronics and suitable for battery-operated medical instruments, GSM/PHS handset power management, and linear post-regulation in industrial embedded systems requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TC1107-2.5VUATR 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 fabs and global design centers.

The TC1107 family was designed as a CMOS-based upgrade to legacy bipolar LDOs, targeting portable, battery-sensitive applications demanding ultra-low quiescent current, high accuracy, and robust protection - especially in medical, telecom, and instrumentation markets.

FAQ

What is the maximum input voltage for TC1107-2.5VUATR?

The absolute maximum input voltage for TC1107-2.5VUATR is 6.5V, but the recommended operating range is 2.7V to 6.0V. Operation above 6.0V risks exceeding safe power dissipation limits, especially at high ambient temperatures or full 300mA load. For reliable long-term use, keep VIN ≤ 6.0V and ensure thermal design accommodates worst-case (VIN − VOUT) × IOUT power.

Does TC1107-2.5VUATR require an external capacitor on the Bypass pin?

TC1107-2.5VUATR does not require an external capacitor on the Bypass pin (Pin 4) for basic operation, but adding a 470pF capacitor to ground reduces output noise from 260nV/√Hz to <100nV/√Hz. Omitting it is acceptable in non-noise-critical digital rails; however, for analog, RF, or precision reference applications, the 470pF bypass is strongly recommended per the datasheet.

Can TC1107-2.5VUATR be used with ceramic output capacitors?

Yes, TC1107-2.5VUATR is stable with ceramic output capacitors as long as they meet the 1μF minimum value and 0.1Ω–5.0Ω effective series resistance (ESR) requirement. X5R or X7R dielectrics are preferred for stable capacitance across temperature and bias. Avoid ultra-low-ESR ceramics (<0.1Ω) unless verified with application testing, as they may induce instability.

What happens to the output voltage of TC1107-2.5VUATR during shutdown?

When the SHDN pin of TC1107-2.5VUATR is pulled low (≤15% VIN), the device enters shutdown mode: the output voltage falls to 0V, and supply current drops to 0.05μA typical. This behavior is confirmed in the Electrical Characteristics table (ISS2 parameter) and Figure 3-1 of the datasheet. No external pull-down on VOUT is needed - the internal pass transistor fully disconnects the output.

Is TC1107-2.5VUATR compatible with lead-free reflow soldering processes?

Yes, TC1107-2.5VUATR is rated for standard lead-free reflow profiles per JEDEC J-STD-020. Its MSOP-8 package supports peak reflow temperatures up to 260°C for ≤40 seconds. The device is RoHS-compliant and halogen-free, with moisture sensitivity level (MSL) 1 - meaning unlimited floor life at ≤30°C/60% RH. Bake-out is not required prior to assembly.