MAX8559ETADK+

PMIC - Voltage Regulators - Linear

The MAX8559ETADK+ is a low dropout (LDO) linear voltage regulator that offers high precision and low power consumption. It is a small package, low-cost device that allows for output voltage tracking, enabling a low output voltage of 1.2 V and high output voltage of 5.0 V. The maximum output current is 1 A, off-times are adjustable, with maximum on and off times ranging from 0.5 s to 5 s. It utilizes an on-chip shutdown switch and PWM controller to regulate input of 2.5 V to 5.5 V, making it ideal for battery-powered applications.

Application Field

The MAX8559ETADK+ is ideal for powering mobile devices with low voltage, high power requirements. It is useful in applications such as mobile phones, GPS modules, PDAs, toys and wearables that require high precision and low power consumption. In addition, its adjustable off-time makes it suitable for low battery applications. The low voltage, high current output and adjustable off-time makes this LDO an ideal solution for portable, battery-powered applications.

Working Principle

The MAX8559ETADK+ is based on a linear regulator topology, which uses the addition of an external pass transistor. This pass transistor acts as a power switch, allowing the output voltage to be regulated. The pass transistor is switched on and off by an internal control circuit, which compares the output voltage to a reference voltage. When the output voltage is higher than the reference voltage, the control circuit turns off the pass transistor. This causes the output voltage to decrease, as the pass transistor is no longer providing a path to ground. Conversely, when the output voltage is lower than the reference voltage, the control circuit turns on the pass transistor. This causes the output voltage to increase, as the pass transistor is providing a path to ground.

The MAX8559ETADK+ also features adjustable off-time control, which allows the user to control the on/off cycle of the device. This adjustable off-time enables the LDO to operate in low battery applications by allowing the output voltage to decrease to a set point and turn off during a pre-set off-time. This feature helps to extend the life of a battery-powered device.

The MAX8559ETADK+ is an ideal solution for powering low voltage, high power requirements and providing high precision, low power consumption. Its adjustable off-time feature makes it suitable for low battery applications and is a valuable addition to any application.