TC573002ECTTR

Overview

The TC573002ECTTR is a low dropout regulator controller from the TC57 family, manufactured by Microchip Technology. It operates with an external PNP pass transistor to provide a fixed 3.0V output voltage with ±2% accuracy. The device supports an input voltage range of 2.7V to 8V and features a low operating current of 50µA, reducing to 0.2µA in shutdown mode. It is housed in a 5-pin SOT-23A package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Controller architecture utilizing an external PNP pass transistor for customizable output current capabilities
• Low true chip enable pin for efficient power management and shutdown control
• High output accuracy maintained at less than ±2% tolerance

Applications

• Battery operated systems
• Portable instruments
• Post-regulator for switch-mode power supplies (SMPS)
• Power supply or battery back-up supply for memory

Procurement Notes

Verify the specific suffix 'ECTTR' corresponds to the 5-pin SOT-23A package, -40°C to +85°C temperature range, and tape-and-reel packaging format as defined in the product identification system. Confirm that the required external components, such as the PNP pass transistor and tantalum capacitors, are sourced separately to complete the regulator circuit design.

Selection Notes

Select this component when a compact LDO solution requires tailoring the maximum output current via the external pass transistor selection. It is suitable for designs prioritizing low installed cost and low dropout performance compared to traditional linear regulators with onboard pass transistors. Ensure the external transistor meets the necessary power dissipation and current gain specifications for the target load.

Part Context

This part belongs to the TC57 series of precision low dropout regulator controllers. The series allows designers to achieve lower dropout voltages and flexible current handling by pairing the controller with various external PNP transistors. Other variants in the family offer different fixed output voltages while sharing the same functional block and package options.

Replacement Considerations

Consult the manufacturer for other available output voltage options within the TC57 family. Verify compatibility with existing external pass transistor selections if substituting with another TC57 variant.