TPS72515

series introduction

# TPS72515 Product Series Introduction

## Overview
The TPS72515 product series is a remarkable line of low - dropout (LDO) voltage regulators developed by Texas Instruments. These regulators are designed to provide a stable and precise output voltage in a wide range of applications, offering high performance, reliability, and efficiency.

## Key Features

### 1. Low Dropout Voltage
One of the standout features of the TPS72515 series is its extremely low dropout voltage. Dropout voltage is the minimum voltage difference between the input and output voltages required for the regulator to maintain a stable output. The low dropout characteristic allows the TPS72515 to operate effectively even when the input voltage is only slightly higher than the desired output voltage. This is particularly useful in battery - powered applications where the battery voltage gradually decreases over time. For example, in a portable device running on a single - cell lithium - ion battery, as the battery discharges, the TPS72515 can still provide a stable output voltage until the battery voltage drops to a very low level, maximizing the usable battery life.

### 2. High Output Voltage Accuracy
The TPS72515 series offers high output voltage accuracy. It can maintain the output voltage within a tight tolerance band, typically ±1% over a wide range of operating conditions, including variations in input voltage, load current, and temperature. This high accuracy is crucial in applications where precise voltage levels are required for the proper functioning of sensitive components such as microcontrollers, analog - to - digital converters (ADCs), and radio frequency (RF) circuits. For instance, in a wireless sensor node, accurate voltage regulation ensures that the ADC can accurately convert analog sensor signals into digital values, and the RF transceiver can operate at the correct frequency and power level.

### 3. Low Quiescent Current
Quiescent current is the current consumed by the regulator when there is no load or a very light load. The TPS72515 series has a very low quiescent current, which is beneficial for battery - powered applications where power consumption needs to be minimized. In standby or sleep modes of a device, the low quiescent current helps to extend the battery life significantly. For example, in a wearable fitness tracker that spends most of its time in a low - power standby state, the low quiescent current of the TPS72515 ensures that the battery drains very slowly, reducing the frequency of recharging.

### 4. Fast Transient Response
The TPS72515 regulators are capable of providing a fast transient response. When the load current changes suddenly, such as when a device switches from a low - power state to a high - power state or vice versa, the regulator can quickly adjust the output voltage to maintain stability. This fast response time is essential in applications with dynamic load requirements, such as mobile phones and tablets. For example, when a mobile phone's processor switches from a low - frequency idle state to a high - frequency processing state, the TPS72515 can rapidly supply the additional current required without causing a significant drop in the output voltage, ensuring smooth operation of the device.

### 5. Thermal Protection
To ensure the reliability and safety of the device, the TPS72515 series is equipped with thermal protection. If the temperature of the regulator exceeds a certain threshold due to excessive power dissipation, the thermal protection circuit will automatically reduce the output current or shut down the regulator to prevent overheating. This feature helps to prevent damage to the regulator and the surrounding components, especially in high - power or high - temperature environments.

## Applications

### 1. Portable Electronic Devices
The TPS72515 series is widely used in portable electronic devices such as smartphones, tablets, smartwat

Images for reference

SOT-223-6 Pkg

D2PAK5

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Datasheets

• TPS72501/15/16/18/25
• PDF 2
• PDF 3

Partlist