onsemi LA78045-E

The ON Semiconductor LA78045-E is a highly efficient, low-dropout (LDO) linear voltage regulator designed for applications requiring precise voltage regulation and minimal power loss. Manufactured by ON Semiconductor, this device operates with an input voltage range of 4.5V to 40V and provides a stable output voltage adjustable from 1.2V to 36V via external resistors. It features a typical quiescent current of 2.5μA, ensuring energy efficiency even in low-load conditions. The LA78045-E is available in a compact SOT-23 package, making it ideal for space-constrained designs.  

LA78045-E Key Features

The LA78045-E delivers exceptional performance with several standout features. Its ultra-low dropout voltage (typically 45mV at full load) minimizes power loss and heat generation, extending battery life in portable devices. The regulator incorporates built-in overcurrent protection (OCP), thermal shutdown (TSD), and reverse polarity protection (RPP), enhancing system reliability. Additionally, it operates with a wide input voltage range and maintains high output accuracy (±1%) across varying loads and temperatures. The device also features a fast transient response, ensuring stable output during sudden voltage fluctuations.  

onsemi LA78045-E Applications  

This LDO is suitable for a variety of applications where precision and efficiency are critical. It finds use in portable electronics such as smartphones, tablets, and wearables due to its low power consumption and compact size. Industrial systems, including motor drives, sensors, and communication equipment, benefit from its robust protection mechanisms and ability to handle high input voltages. Medical devices and IoT gadgets also leverage the LA78045-E for reliable power supply in environments with fluctuating voltage conditions. Additionally, it serves as an ideal choice for voltage buffering in audio equipment and DC-DC converter post-regulation stages.