TC1173-5.0VOA

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

The TC1173-5.0VOA is a precision fixed-output CMOS low dropout regulator manufactured by Microchip Technology, providing a stable 5V 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 incorporates internal feed-forward compensation for fast transient response and maintains stability with a minimum output capacitance of 1µF. Key electrical characteristics include a typical dropout voltage of 240mV at full load, line regulation of 0.05%, and load regulation of 0.5%. It includes overcurrent and thermal protection, an error flag output, and a shutdown mode reducing current to 0.05µA.

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

• Ultra-low quiescent current consumption extends battery life in portable applications
• Integrated error output functions as a low battery detector or processor reset generator
• Built-in power saving shutdown mode significantly reduces standby current
• Internal overcurrent and overtemperature protection ensures device reliability

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

• Battery operated systems
• Portable computers
• Medical instruments
• Cellular/GSM/PHS phones
• Linear post-regulators for SMPS

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

Verify the specific package type matches the design requirements, as the TC1173 series is available in both SOIC and MSOP configurations. Confirm that the ordering suffix corresponds to the desired packaging format, such as tube or reel, before finalizing procurement. Ensure compatibility with the target operating temperature range and validate pinout assignments against the schematic to prevent integration errors during assembly.

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

Select this component when a fixed 5V rail is required with minimal static power draw. The device is suitable for designs needing fast transient response due to internal feed-forward compensation. Consider the 8-pin SOIC package for standard surface mount assembly. Verify that the application load does not exceed the 300mA limit and that the input voltage remains within the specified operational boundaries to maintain regulation accuracy.

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

This part belongs to the TC1173 family of CMOS LDO regulators from Microchip Technology. The family offers various fixed output voltages including 2.5V, 2.8V, 3.0V, 3.3V, and 5.0V. The 'VOA' suffix indicates the 5.0V output variant housed in an 8-pin SOIC package. Other variants like TC1173-xxVUA utilize an MSOP package for space-constrained designs.

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

Direct substitutes within the same family include other voltage variants of the TC1173 series, such as TC1173-3.3VOA or TC1173-2.5VOA, provided the output voltage requirement differs. For package changes, the MSOP equivalent TC1173-5.0VUA offers identical electrical performance in a smaller footprint.