TPS728185315YZUR

The TPS728185315YZUR is a high precision, dual low-dropout (LDO) linear regulator designed to provide excellent AC and DC line and load regulation over a wide range of temperatures and line/load conditions. It features fast transient response, high accuracy reference module designs, thermal shutdown, trickle mode and low-noise operation in the 1.1 to 3.4V voltage range. The TPS728185315YZUR is capable of providing up to 1.5A output current, and has a shutdown current of only 4µA. Its low operating temperature, low quiescent current and low dropout voltage make it an ideal choice for portable and battery-powered applications.

The typical application fields for the TPS728185315YZUR include cellular handsets and other portable communication devices, such as PDAs, wireless headsets, and portable gaming devices. The device is also well-suited for portable medical equipment, personal navigation devices, tablet PCs, camera and camcorders, e-book readers, and point-of-sale terminals. It is also suitable for use in smart meters, environmental sensor networks, and industrial monitoring applications.

The TPS728185315YZUR is a positive linear regulator that uses a simple differential amplifier circuit. This converter consists of two transistors (Q1 and Q2) connected in a differential amplifier configuration. A feedback network is connected between the output and the non-inverting (positive) input of the amplifier. An error amplifier is used to drive the transistors. The feedback network senses the output voltage, and the error amplifier makes sure that the difference between the actual output voltage and the reference voltage remains constant. The reference voltage is provided by an external voltage reference device.

To further improve the accuracy of the output voltage, two resistors connected in series (R1 and R2) can be used to "bootstrap" the reference voltage. This allows the regulator output voltage to track the temperature, line, and load variations with greater accuracy. In addition, the large bandwidth of the regulator makes it suitable for fast load-transient applications. The device\'s shutdown current of 4µA also makes it suitable for battery powered and energy-saving applications.

The TPS728185315YZUR features the 110mV max dropout current at full load, a wide supply voltage range of 1.1V to 3.4V, and a temperature range of -40°C to 125°C. This device is also available in various packages, including SOT-23, MSOP-10, and a micro-X10 transistor outline (TO-251). The TPS728185315YZUR is suitable for use both in applications requiring maximum accuracy and those in cost sensitive applications, including those found in consumer electronics and industrial instrumentation.