STMicroelectronics L78L33ACUTR

The L78L33ACUTR is a linear voltage regulator from STMicroelectronics. It provides a regulated output voltage of 3.3V and can deliver up to 100mA of output current. It is designed for low-power applications and is commonly used in battery-powered circuits due to its low dropout voltage and low quiescent current. Functions: - Voltage Regulation: The L78L33ACUTR ensures a stable 3.3V output from a higher input voltage, maintaining a constant output despite variations in input voltage or load current. - Dropout Voltage: It has a low dropout voltage, which allows it to function effectively even when the input voltage is only slightly higher than the output voltage. - Overcurrent and Thermal Protection: The device includes built-in protection features to prevent damage from overheating or excessive current draw. Applications: - Battery-Powered Devices: Ideal for portable devices needing a stable 3.3V supply from batteries. - Microcontroller Power Supply: Commonly used in microcontroller circuits where a stable 3.3V is required. - Consumer Electronics: Used in various consumer electronics applications that require a low power voltage supply. - Sensors and IoT Devices: Suitable for powering sensors and Internet of Things (IoT) devices that operate at 3.3V. Alternative Parts: - LM1117-3.3: A similar low-dropout regulator providing 3.3V output. - MIC5205: Another option for low-power 3.3V regulation. - LP2950: A low-dropout regulator offering a regulated output voltage. Embedded Modules: Embedded modules using the L78L33ACUTR would typically involve custom PCB designs that incorporate the regulator to power other embedded components like microcontrollers (e.g., Arduino, Raspberry Pi), sensors, and communication modules. Related Q&A: 1. Q: What is the maximum output current of the L78L33ACUTR? - A: The maximum output current of the L78L33ACUTR is 100mA. 2. Q: What is the dropout voltage for the L78L33ACUTR? - A: The dropout voltage for the L78L33ACUTR is typically around 1.2V at full load; thus, the input voltage must be at least 4.5V for proper regulation. 3. Q: Can the L78L33ACUTR provide regulated output voltage with small variations in input voltage? - A: Yes, the L78L33ACUTR is designed to provide a stable output voltage even with small variations in input voltage, as long as the input voltage remains above the dropout level. 4. Q: In which applications would I use the L78L33ACUTR? - A: The L78L33ACUTR is commonly used in battery-powered devices, microcontroller circuits, consumer electronics, and IoT devices that require a 3.3V power supply. 5. Q: Are there any protection features included in the L78L33ACUTR? - A: Yes, the L78L33ACUTR includes overcurrent protection and thermal shutdown to safeguard the device from damage under excessive load or temperature conditions.