MAX8575EUT+T

PMIC - Voltage Regulators - Special Purpose

MAX8575EUT+T is a low quiescent current, low dropout, wide-input voltage (VIN) linear regulator featuring an enable input and fixed ±1% accuracy of output voltage. The device is capable of providing an adjustable or fixed output voltage up to 5.5V, while sinking up to 40mA at up to 4V of output voltage and 150mA at 4.85V of output voltage. This makes it suitable to support various microcontroller, microprocessor core-power, and memory-power supplies. The device comes in a space-saving 2mm x 2mm WLP or 2.6mm x 3mm UT-8 package with a Built In Thermal Shutdown (BTS).

Application Field & Working Principle

The MAX8575EUT+T offers numerous applications such as notebook, desktop computer, cellular, and personal communication peripherals. Its adjustable output voltage range of 0.8V to 5.5V makes the device ideal for a wide range of applications such as microcontrollers and digital signal processors (DSPs). When the BTS active, the typical off-state current is 500 nA. These features along with the low dropout and low quiescent current makes it an ideal choice for applications requiring high efficiency.

The basic working principle of the MAX8575EUT+T is based on the voltage regulation mechanism, using the resistive divider, operational amplifier, error amplifier, and pass element of the device. The first part of the device is the resistive divider, which provides the input voltage to the amplifier. This enables the device to monitor the input voltage and adjust the output voltage accordingly. The second part of the device is the operational amplifier, which is used to provide the desired voltage set point. The third part is the error amplifier, which compares the desired voltage set point with the actual output voltage, and provides a voltage offset for the pass element to regulate the output voltage. The last part of the device is the pass element, which is the actual device responsible for regulating the output voltage.

The MAX8575EUT+T is capable of providing up to 1% accuracy of output voltage, which gives it a huge advantage over other solutions in its class. The device also features a fast load transient response time, which can range from a few microseconds to around 20ms. Additionally, the device features a low dropout (LDO) voltage of just 200mV, which can significantly improve the efficiency of the system it is powering.

In conclusion, the MAX8575EUT+T is a high-performance, low quiescent current, low voltage linear regulator with an enable input and fixed ±1% accuracy of output voltage. With its wide input voltage range, fast transient response time and low dropout voltage, the device is well suited for applications requiring very high efficiency, such as portable computers and cellular phones.