TPS77518D
1.8V low dropout voltage regulators with 500mA output for stable power supply
Manufacturer： ti
series introduction
# TPS77518D Product Series Introduction
## 1. Overview
The TPS77518D is a highly reliable and efficient product series of low - dropout (LDO) voltage regulators from Texas Instruments. These regulators are designed to provide a stable and precise output voltage, making them an ideal choice for a wide range of applications where power management is crucial.
## 2. Key Features
### 2.1 Low Dropout Voltage
One of the standout features of the TPS77518D series is its low dropout voltage. Dropout voltage is the minimum difference between the input voltage and the output voltage required for the regulator to maintain a stable output. With a low dropout voltage, the TPS77518D can operate effectively even when the input voltage is only slightly higher than the desired output voltage. This is particularly useful in battery - powered applications, as it allows the battery to be used more efficiently, extending the battery life.
### 2.2 High Output Voltage Accuracy
The TPS77518D offers high output voltage accuracy. It can maintain the output voltage within a very tight tolerance, typically within ±1% over a wide range of operating conditions. This high accuracy is essential for applications that require precise voltage levels, such as in sensitive analog circuits, microcontrollers, and other integrated circuits.
### 2.3 Low Quiescent Current
Quiescent current is the current consumed by the regulator when there is no load or a very light load. The TPS77518D series has a low quiescent current, which helps to reduce power consumption in standby or low - power modes. This is beneficial for battery - operated devices, as it minimizes the power drain on the battery when the device is not in active use.
### 2.4 Thermal Shutdown and Current Limit Protection
To ensure the reliability and safety of the device, the TPS77518D is equipped with thermal shutdown and current limit protection features. The thermal shutdown feature automatically turns off the regulator when the temperature exceeds a certain threshold, preventing damage due to overheating. The current limit protection restricts the output current to a safe level, protecting the regulator and the connected load from excessive current flow.
### 2.5 Small Package Size
The TPS77518D is available in a small and compact package, which is suitable for space - constrained applications. The small package size allows for easy integration into printed circuit boards (PCBs), making it a popular choice for portable devices, wearables, and other miniaturized electronics.
## 3. Electrical Specifications
### 3.1 Input Voltage Range
The TPS77518D typically has an input voltage range that can accommodate a variety of power sources. It can handle input voltages from a few volts up to a specified maximum value, which provides flexibility in different application scenarios.
### 3.2 Output Voltage
The output voltage of the TPS77518D is fixed at 1.8V, which is a common voltage level required by many modern integrated circuits, such as microprocessors, memory chips, and sensors.
### 3.3 Output Current Capability
The series can deliver a certain amount of output current, which is sufficient for powering a wide range of loads. The output current rating depends on the specific model within the TPS77518D series, but it is typically in the range of several hundred milliamperes, making it suitable for both small - scale and medium - scale applications.
### 3.4 Line and Load Regulation
Line regulation refers to the ability of the regulator to maintain a stable output voltage when the input voltage changes. Load regulation, on the other hand, is the ability to keep the output voltage constant when the load current
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