TLV70228DBVR
Low-dropout voltage regulators for efficient power management
Manufacturer： ['analog-devices', 'ti']
series introduction
# TLV70228DBVR Product Series Introduction
## 1. Overview
The TLV70228DBVR is a remarkable product within the voltage regulator family, designed and manufactured by Texas Instruments. This low - dropout (LDO) voltage regulator series is engineered to provide stable and reliable power supply solutions for a wide range of electronic applications. With its compact package and high - performance characteristics, it has become a popular choice among designers in various industries.
## 2. Key Features
### 2.1 Low Dropout Voltage
One of the most significant features of the TLV70228DBVR is its 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. In the case of the TLV70228DBVR, it can operate with a very low dropout, which means it can efficiently regulate the output voltage even when the input voltage is only slightly higher than the desired output voltage. This is particularly useful in battery - powered applications where conserving battery life is crucial. For example, in a portable device running on a single - cell lithium - ion battery, the battery voltage gradually decreases as it discharges. The low dropout characteristic of the TLV70228DBVR allows the device to continue operating properly for a longer time as the battery voltage drops.
### 2.2 Low Quiescent Current
The quiescent current is the current consumed by the regulator when there is no load or a very light load connected to the output. The TLV70228DBVR has an extremely low quiescent current, which further contributes to its energy - efficiency. In battery - powered systems, minimizing the quiescent current is essential to extend the battery life. For instance, in a wireless sensor node that operates in a low - power mode for most of the time, the low quiescent current of the TLV70228DBVR ensures that the battery is not drained unnecessarily during idle periods.
### 2.3 High Power Supply Rejection Ratio (PSRR)
PSRR is a measure of how well a voltage regulator can reject noise and ripple on the input voltage. The TLV70228DBVR offers a high PSRR, which means it can effectively filter out unwanted noise and fluctuations from the input power source. This is crucial in applications where a clean and stable power supply is required, such as in audio circuits or precision measurement equipment. For example, in an audio amplifier, a high - PSRR voltage regulator like the TLV70228DBVR can prevent power - supply noise from being introduced into the audio signal, resulting in high - quality sound reproduction.
### 2.4 Adjustable Output Voltage
The TLV70228DBVR provides the flexibility of adjustable output voltage. Designers can set the output voltage according to the specific requirements of their applications by using external resistors. This feature makes it suitable for a wide range of electronic devices with different power supply voltage needs. For example, in a multi - voltage system where different components require different supply voltages, the adjustable output voltage of the TLV70228DBVR allows for a single regulator to be used to generate multiple voltage levels.
### 2.5 Thermal Shutdown and Current Limiting
To ensure the reliability and safety of the device, the TLV70228DBVR is equipped with thermal shutdown and current - limiting 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 - limiting feature restricts the output current to a safe level, protecting the regulator and the connected load from excessive current flow. These protection mechanisms enhance the durability of the device and reduce the risk of system failures.
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Images for reference
SOT-23-5, SC-74A
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