LD1086DT33TR
3.3V low dropout voltage regulators for stable power supply
Manufacturer： stm
series introduction
# LD1086DT33TR Product Series Introduction
## 1. Overview
The LD1086DT33TR is a highly reliable and efficient product series belonging to the low - dropout (LDO) linear voltage regulator category. These regulators are designed to provide a stable output voltage with low noise and high power supply rejection ratio (PSRR), making them suitable for a wide range of electronic applications.
## 2. Key Features
### 2.1 Low Dropout Voltage
One of the most significant features of the LD1086DT33TR series 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. With a low dropout voltage, these regulators can operate effectively even when the input voltage is only slightly higher than the output voltage. For example, in battery - powered applications, this allows the battery to be used until its voltage drops to a relatively low level, maximizing the battery's useful life.
### 2.2 High Output Current Capability
The LD1086DT33TR can deliver a relatively high output current. This makes it suitable for powering components that require a significant amount of current, such as microcontrollers, digital signal processors (DSPs), and other integrated circuits. The ability to handle high currents ensures that the regulator can meet the power demands of various load conditions without sacrificing performance.
### 2.3 Excellent Line and Load Regulation
Line regulation refers to the ability of the regulator to maintain a constant output voltage when the input voltage changes. Load regulation, on the other hand, is the regulator's ability to keep the output voltage stable when the load current varies. The LD1086DT33TR series offers excellent line and load regulation, ensuring that the output voltage remains within a tight tolerance even under changing input and load conditions. This is crucial for applications where a stable power supply is essential for proper operation, such as in precision measurement equipment and communication devices.
### 2.4 Low Noise Operation
In many electronic applications, especially those involving sensitive analog circuits or high - speed digital signals, low noise is a critical requirement. The LD1086DT33TR series is designed to operate with low noise, minimizing the interference that could otherwise affect the performance of the connected components. This makes it an ideal choice for audio amplifiers, radio frequency (RF) circuits, and other noise - sensitive applications.
### 2.5 Thermal Protection
To prevent damage due to overheating, the LD1086DT33TR is equipped with thermal protection. When the temperature of the regulator exceeds a certain threshold, the thermal protection mechanism kicks in and reduces the output current or shuts down the regulator temporarily. This ensures the long - term reliability and safety of the regulator, especially in high - power or high - temperature environments.
## 3. Technical Specifications
### 3.1 Output Voltage
The LD1086DT33TR is typically configured to provide a fixed output voltage of 3.3V. This voltage level is widely used in modern electronic systems, such as in many microcontrollers, memory chips, and other digital integrated circuits.
### 3.2 Input Voltage Range
The input voltage range of the LD1086DT33TR is designed to be compatible with a variety of power sources. It can accept an input voltage that is typically a few volts higher than the output voltage, usually in the range of 4.5V to 12V. This wide input voltage range allows for flexibility in power supply design and makes it suitable for use with different types of batteries or power adapters.
### 3.3 Output Current
The series can support an output current of up to 1.5A, which is sufficient for powering a wide range of
Images for reference
TO-263
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