Overview
The LE33ACD-TR is a low-dropout linear voltage regulator designed to deliver a fixed 3.3V output with high precision. Manufactured by STMicroelectronics, it is part of the LDO family, offering reliable performance for various electronic applications. Its compact SOT-23 package makes it suitable for space-constrained designs. The regulator operates with an input voltage range of up to 16V and can supply up to 100mA of output current. It features low quiescent current and excellent line/load regulation, making it ideal for battery-powered devices and other low-power applications.
Structure and Working Principle
The LE33ACD-TR consists of a reference voltage generator, error amplifier, pass transistor, and feedback network. When the input voltage is applied, the error amplifier compares the output voltage with the internal reference and adjusts the pass transistor to maintain a stable 3.3V output. The device includes built-in protection features such as thermal shutdown and current limiting, which safeguard the regulator and connected components from damage due to overheating or excessive load currents. The dropout voltage is typically 0.3V at full load, ensuring efficient operation even with low input voltages.
Key Features
The LE33ACD-TR offers several advantages, including low dropout voltage, high output accuracy (±2%), and low noise output. Its thermal shutdown feature prevents overheating, while the current limit protection ensures safe operation under fault conditions. Additionally, the regulator exhibits excellent line and load regulation, making it suitable for applications requiring stable voltage despite variations in input voltage or load current. The SOT-23 package is RoHS compliant and suitable for surface-mount technology (SMT) assembly processes.
Application Areas
This voltage regulator is widely used in consumer electronics, such as smartphones, tablets, and portable media players, where stable voltage is critical for sensitive components. It is also employed in industrial automation systems, automotive electronics, and IoT devices. In battery-powered applications, the LE33ACD-TR's low quiescent current helps extend battery life. Its small footprint and reliability make it a preferred choice for designers working on compact and energy-efficient circuits.
Maintenance and Precautions
To ensure optimal performance, avoid exposing the LE33ACD-TR to input voltages exceeding its maximum rating (16V). Proper PCB layout and thermal management are essential to prevent overheating, especially in high-ambient-temperature environments. When soldering, follow the manufacturer's recommended reflow profile to avoid damaging the component. Storage conditions should adhere to industry standards for moisture-sensitive devices, typically in a dry environment with controlled humidity.
B2B Procurement Guide
When sourcing the LE33ACD-TR, verify the supplier's authenticity to avoid counterfeit components. Bulk purchases often attract discounts, but ensure the components are from the same batch for consistency in performance. Lead times can vary, so plan procurement accordingly, especially for large-scale production. Consider alternative part numbers or manufacturers if supply chain disruptions occur, but cross-check specifications to ensure compatibility.
Related Manufacturers
- 主营：电子元器件、集成电路、射频放大器、微控制器、场效应管、电源管理芯片、运算放大器、数模转换器、TI、ADI、连接器
- 主营：微控制器、场效应管、电源芯片、整流二极管、运算放大器、驱动器芯片、数模转换器、通用比较器、电源管理芯片、无线收发器芯片