TC1173-3.3VUATR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The TC1173-3.3VUATR is a fixed-output CMOS low dropout regulator manufactured by Microchip Technology, providing a precise 3.3V output with a maximum current of 300mA. It operates within an input voltage range of 2.7V to 6.0V and features extremely low supply current, typically 50µA at full load. The device includes overcurrent and overtemperature protection, an ERROR flag for out-of-regulation detection, and a shutdown mode reducing current to 0.05µA. Packaged in an 8-pin MSOP, it supports operation from -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Ultra-low noise operation with optional bypass input for enhanced signal integrity
• Integrated error output functions as a low battery detector or processor reset generator
• Power-saving shutdown mode significantly reduces supply current when disabled
• Internal feed-forward compensation ensures fast response to step load changes

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery operated systems requiring extended life
• Portable computers and handheld devices
• Medical instruments and portable diagnostics
• Cellular/GSM/PHS phones and pagers
• Linear post-regulators for switching power supplies

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging configuration. Confirm the 'VUA' designation corresponds to the 8-pin MSOP package variant. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles specified in the manufacturer's packaging guidelines. Cross-reference the exact part number against the latest datasheet revision to confirm pinout and electrical characteristics remain unchanged.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 3.3V rail is required with minimal quiescent current consumption. The inclusion of an error output makes it suitable for applications needing system status monitoring or reset generation. Consider the thermal resistance of the MSOP package for high-load scenarios. Verify that the input voltage remains above the minimum dropout threshold across the entire operating temperature range to maintain regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the TC1173 family of precision CMOS LDO regulators. The series offers various fixed output voltages including 2.5V, 2.8V, 3.0V, 3.3V, and 5.0V. The TC1173-3.3VUATR specifically denotes the 3.3V output version housed in an 8-pin MSOP package with tape-and-reel delivery. It shares core architectural features with other variants in the line, differing primarily in output voltage and physical packaging.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Direct substitutes include other TC1173 variants with different output voltages if voltage adjustment is acceptable, such as TC1173-5.0VUATR. For identical specifications, verify availability of TC1173-3.3VOATR (SOIC package) if form factor allows. No other cross-brand replacements are confirmed in the provided documentation.