TPS77028DBVR
Low-dropout voltage regulators for efficient power management
Manufacturer： ['rochester', 'analog-devices', 'ti']
series introduction
# TPS77028DBVR Product Series Introduction
## 1. Overview
The TPS77028DBVR belongs to a high - performance voltage regulator product series offered by Texas Instruments. Voltage regulators are crucial components in electronic circuits as they ensure a stable and reliable power supply to various electronic devices, protecting them from voltage fluctuations and ensuring proper operation.
## 2. Key Features
### 2.1 Output Voltage
The "28" in TPS77028DBVR indicates that it provides a fixed output voltage of 2.8V. This precise output voltage is ideal for powering components that require a specific and stable voltage level, such as certain types of integrated circuits, sensors, and microcontrollers.
### 2.2 Low Dropout Voltage
One of the significant features of the TPS77028DBVR 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. A low dropout voltage means that the regulator can operate efficiently even when the input voltage is only slightly higher than the output voltage. For example, in battery - powered applications, as the battery voltage gradually decreases over time, the low dropout characteristic allows the regulator to continue providing a stable 2.8V output for a longer period, maximizing the battery's useful life.
### 2.3 Low Quiescent Current
The quiescent current is the current consumed by the regulator when there is no load or a very light load connected. The TPS77028DBVR has a low quiescent current, which is beneficial for power - sensitive applications. In battery - operated devices, a low quiescent current helps to reduce the overall power consumption, thereby extending the battery life. This makes it suitable for portable devices such as wearable electronics, wireless sensors, and handheld medical devices.
### 2.4 Thermal Shutdown and Current Limit Protection
To ensure the safety and reliability of the regulator and the connected components, the TPS77028DBVR is equipped with thermal shutdown and current limit protection features. The thermal shutdown mechanism 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 load from excessive current, which could otherwise cause damage or malfunction.
## 3. Package and Pin Configuration
### 3.1 Package Type
The "DBVR" in the part number indicates the package type. The TPS77028DBVR comes in a small - outline package (SOP), which is a popular choice for surface - mount applications. The SOP package offers a compact form factor, making it suitable for use in space - constrained printed circuit boards (PCBs). It also provides good thermal performance and electrical isolation.
### 3.2 Pin Configuration
The pin configuration of the TPS77028DBVR is designed for easy integration into electronic circuits. It typically has pins for input voltage (VIN), output voltage (VOUT), ground (GND), and sometimes additional pins for enable/disable control. The enable pin allows the user to turn the regulator on or off, which can be useful for power management in systems where power consumption needs to be optimized.
## 4. Applications
### 4.1 Portable Electronic Devices
As mentioned earlier, the low quiescent current and low dropout voltage make the TPS77028DBVR an excellent choice for portable electronic devices. In smartphones, tablets, and smartwatches, it can be used to power various subsystems such as the display driver, audio codec, and sensor modules, ensuring stable power supply and long battery life.
### 4.2 Industrial Control Systems
In industrial control systems
Images for reference
SOT-23-5, SC-74A
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