TPS72516DCQ

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

The TPS72516DCQ is a fixed-output low-dropout linear regulator from the Texas Instruments TPS725xx family, providing a nominal 1.6-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 drops below regulation, featuring a typical delay time of 50 ms. It maintains stability with any type or value of output capacitor.

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

• Provides a fixed 1.6-V regulated output suitable for powering microcontrollers and DSPs
• Integrates a supervisor circuit with an active-low open-drain RESET output and programmable delay
• Operates stably with any type or value of output capacitor without minimum load requirements
• Includes built-in thermal shutdown and adjustable current limiting protection

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

• Power supplies for digital signal processors (DSPs)
• Power supplies for field-programmable gate arrays (FPGAs)
• Microcontroller power rails
• Telecom boards and modem banks

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

Verify the specific package variant, as the DCQ suffix denotes the SOT-223-5 package. Confirm the manufacturing status, as this component may be discontinued or subject to production changes. Ensure the design accounts for the required thermal dissipation based on the PCB copper area and ambient temperature conditions specified in the datasheet.

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

Select this component when a stable 1.6-V rail is required with high current capability and minimal external components. It is suitable for applications where input voltage is close to the output voltage due to its low dropout characteristics. Consider the integrated supervisor feature if system reset monitoring is needed without additional logic.

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

This part belongs to the TPS725xx family of low-input voltage, 1-A LDO regulators. The family includes adjustable versions like the TPS72501 and other fixed-voltage options such as the TPS72515, TPS72518, and TPS72525. All variants share similar electrical characteristics and protection features but differ in their fixed output voltages or feedback configuration.

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

TPS72516DCQR

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

Is an output capacitor required for stability?

No, the TPS72516 is stable with any type or value of output capacitor. However, adding a 10-µF or larger low ESR capacitor is recommended to improve transient response and reduce output noise.

How does the RESET pin function?

The RESET pin is an open-drain output that goes active low when the output voltage falls more than 5% below its nominal value. It typically provides a 50-ms delay before asserting the reset signal.