TPS72515KTTR

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

The TPS72515KTTR is a fixed-output low-dropout linear regulator from Texas Instruments, providing a nominal 1.5-V output with a maximum continuous current of 1 A. It operates within an input voltage range of 1.8 V to 6 V and features a typical dropout voltage of 170 mV at full load. The device includes an integrated supervisor circuit that generates an active-low RESET signal when the output falls out of regulation, featuring a typical delay time of 50 ms. Ground current is typically 210 µA at full load, dropping below 80 µA at no load, with standby current less than 1 µA. It offers ±2% output voltage tolerance over line, load, and temperature conditions ranging from -40°C to +125°C.

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

• Integrated supervisor circuitry provides an active low RESET signal with a 50-ms delay when output voltage drops out of regulation.
• Capable of delivering 1-A output current with very low dropout voltage, enabling efficient operation in battery-powered applications.
• Stable with any type or value of output capacitor, allowing customers to tailor transient performance without minimum capacitance requirements.
• Includes internal thermal protection and overcurrent limiting to safeguard against gross device failure under fault conditions.

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

• Powering DSPs, FPGAs, and microcontrollers
• PCI cards and modem banks
• Telecom boards and portable equipment

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

Verify the specific package variant (KTT) and suffix (R for reel) matches the design requirement. Confirm the fixed 1.5-V output version aligns with system voltage rails. Ensure the PCB layout supports the thermal dissipation needs for the DDPAK package if high power loads are anticipated. Check for moisture sensitivity handling requirements during assembly.

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

Select this component when a stable 1.5-V supply is required for digital logic or memory components. The integrated supervisor simplifies system reset sequencing compared to discrete solutions. Consider the thermal resistance characteristics of the DDPAK package versus SOT223 based on available board copper area and airflow constraints for power dissipation management.

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

This part belongs to the TPS725xx family of low-input voltage LDO regulators designed for high-current applications. The family includes adjustable and fixed voltage options, sharing common features like low ground current and robust protection circuits. The TPS72515 specifically targets systems requiring a precise 1.5-V rail with integrated monitoring capabilities.

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

TPS72515DCQ (SOT223-5 package)