UA78L05ACD
5V 100mA linear voltage regulators in 8-pin SOIC package
Manufacturer： ['analog-devices', 'ti']
series introduction
# Introduction to the UA78L05ACD Product Series
## 1. Overview
The UA78L05ACD is a member of a well - regarded series of voltage regulators. These regulators are designed to provide a stable and reliable output voltage, making them an essential component in a wide range of electronic circuits. The "UA78L" indicates the general family of the regulator, and the "05" specifies the output voltage of 5 volts, while "ACD" may represent specific package or performance - related variations within the series.
## 2. Key Features
### 2.1 Fixed Output Voltage
The most prominent feature of the UA78L05ACD is its ability to provide a fixed output voltage of 5 volts. This is crucial in many electronic systems where a stable power supply is required for proper operation. For example, in microcontroller - based circuits, a 5 - volt power supply is often needed to ensure that the microcontroller and other associated components function correctly.
### 2.2 Low Dropout Voltage
It has a relatively low dropout voltage, which means that it can maintain a stable 5 - volt output even when the input voltage is only slightly higher than the output voltage. This is beneficial in battery - powered applications where the battery voltage may gradually decrease over time. With a low dropout voltage, the regulator can continue to provide a stable output until the battery voltage drops to a very low level, thus extending the useful life of the battery.
### 2.3 Thermal Overload Protection
The UA78L05ACD is equipped with thermal overload protection. In high - power or high - temperature environments, the regulator may generate a significant amount of heat. The thermal overload protection feature ensures that the device shuts down or reduces its output power when the temperature exceeds a safe limit. This protects the regulator from damage due to overheating and also enhances the overall reliability of the electronic system.
### 2.4 Short - Circuit Protection
Another important safety feature is short - circuit protection. In the event of a short - circuit in the output circuit, the regulator will automatically limit the current to a safe level. This prevents excessive current from flowing through the device, which could otherwise cause damage to the regulator and other components in the circuit.
### 2.5 Low Quiescent Current
The quiescent current of the UA78L05ACD is relatively low. Quiescent current is the current that the regulator consumes when there is no load connected to the output. A low quiescent current is desirable in battery - powered applications as it helps to conserve battery power, especially in standby or low - power modes.
## 3. Technical Specifications
### 3.1 Input Voltage Range
The UA78L05ACD typically has an input voltage range that can vary depending on the specific model and application requirements. Generally, the input voltage should be at least a few volts higher than the output voltage of 5 volts. For example, the input voltage may range from 7 volts to 25 volts. This wide input voltage range allows the regulator to be used in a variety of power supply systems, including those powered by batteries, AC - DC adapters, or other voltage sources.
### 3.2 Output Current
The maximum output current that the UA78L05ACD can supply is also an important specification. It can typically provide an output current of up to 100 mA. This makes it suitable for powering small - to - medium - sized electronic components such as sensors, small integrated circuits, and low - power microcontrollers.
### 3.3 Output Voltage Accuracy
The output voltage accuracy of the UA78L05ACD is relatively high. It can maintain the output voltage within a narrow tolerance range, typically ± 2% or better. This high accuracy ensures
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8-SOIC
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