MAX14750AEWA+T

PMIC - Voltage Regulators - Linear + Switching

The MAX14750AEWA+T is a voltage regulator integrated circuit (IC) used for particular applications where low quiescent current is important. It is categorized under the PMIC – Voltage Regulators – Linear + Switching. Depending on the particular application, it can be used for 3-4V DC to 5V DC, non-isolated, single-output voltage regulator. The MAX14750AEWA+T is made of two primary devices: a linear regulator, plus a switching power supply with a voltage-mode architecture.

Application Field

MAX14750AEWA+T is mostly used in low power applications and portable electronics like printers, scanners, smartphones, handheld monitoring devices. It can also be used in automotive switches and industrial applications. Due to its low quiescent current, the MAX14750AEWA+T ensures low power dissipation and high efficiency, and is thus well suited to applications with battery-powered environments, or applications where excessive heat generation is a concern.

Working Principle

The MAX14750AEWA+T provides an efficient voltage regulator in a compact package. The device integrates a series of system protections and fault signal outputs. It offers input voltage protection, output voltage protection, over-temperature protection, and load protection.

The linear regulator is composed of a fully self-contained series pass transistor and a control element (an operational amplifier). The operational amplifier senses the output voltage, and compares this voltage value to a reference voltage. This provides regulation by controlling the pass transistor. The switch transition starts and ends in proper order, and periodic synchronous rectification also helps to reduce switching losses.

The switching regulator ensures high efficiency/low EMI. It contains two MOSFETs (a high-side MOSFET for switching, and a low-side MOSFET for synchronous rectification). The MOSFETs work in conjunction with an internal oscillator to create a diode-emulated switch voltage mode architecture. The output voltage ripple is further minimized by a built-in voltage boost circuit.

Conclusion

The MAX14750AEWA+T is a voltage regulator IC designed for low power applications. It is part of the PMIC – Voltage Regulators – Linear + Switching family, and is cost effective and efficient. Its low quiescent current contributes to its popularity in battery-powered environments, and the series of system protections and fault signal outputs give consumers confidence in its performance. All in all, MAX14750AEWA+T is an excellent IC for a variety of applications.