Union Semiconductor, Inc. Voltage Regulators - Linear UM1770Y-00

The UM1770Y-00 is a very low dropout (VLDO) linear voltage regulator designed for low power portable applications, capable of delivering up to 500mA output current. It features a maximum dropout voltage of 320mV at full load, ensuring efficient operation in battery-powered systems. The device operates with a quiescent current of only 250OºA, making it suitable for energy-sensitive applications. Output noise is minimal, with typical values of 90OºV_RMS for fixed output at 1.0V, and it maintains high output voltage accuracy of ¬±2% at 500mA. The regulator is stable with ultra-low ESR ceramic capacitors starting from 1OºF, and includes protections against short-circuit and thermal overload conditions. The UM1770Y-00 is available in a compact SOT89-5 package, making it ideal for space-constrained designs. This voltage regulator is applicable in various devices, including Bluetooth cards, PDAs, notebook computers, portable instruments, and cellular phones. Its combination of low dropout voltage, low noise, and compact size makes it a strong candidate for engineers looking for reliable voltage regulation in portable applications.