TC572502ECTTR

Overview

The TC572502ECTTR is a low dropout regulator controller manufactured by Microchip Technology, designed to operate with an external PNP pass transistor. It provides a fixed output voltage of 2.5V with a tolerance of ±2%. The device supports an input supply range from 2.7V to 8V and operates within a temperature range of -40°C to +85°C. Key electrical characteristics include a typical operating current of 50µA and a shutdown supply current below 1µA. It utilizes a 5-pin SOT-23A package.

Feature Summary

• Functions as a precision low dropout regulator controller requiring an external PNP pass transistor for operation.
• Features a low true chip enable pin that allows the device to enter a low power shutdown state when activated.
• Delivers high output accuracy with a specified tolerance of less than ±2%.

Applications

• Battery operated systems
• Portable instruments
• High-efficiency linear regulators
• Post-regulators for switch-mode power supplies (SMPS)
• Power supply or battery backup supply for memory

Procurement Notes

Verify the component matches the specific part number TC572502ECTTR, ensuring the suffix indicates tape and reel packaging. Confirm the manufacturer is Microchip Technology Inc. Check the datasheet revision history for any updates regarding operational differences or errata sheets before finalizing procurement specifications.

Selection Notes

Select this component when designing circuits that require tailored LDO characteristics using an external pass transistor. Ensure the chosen external PNP transistor meets the required power dissipation, current gain, and collector current specifications. Verify that the application requires a fixed 2.5V output and operates within the specified 2.7V to 8V input voltage range.

Part Context

The TC57 series consists of line regulator controllers that allow users to customize low dropout performance by selecting appropriate external transistors. This approach often results in lower dropout voltages and reduced installed costs compared to traditional linear regulators with onboard pass transistors. The maximum output current capability is determined by the external transistor's characteristics rather than the controller itself.

Replacement Considerations

Other output voltages and package options are available within the TC57 family. Contact Microchip Technology Inc. for details on alternative configurations. No direct public substitute part numbers are confirmed in the provided documentation.