MAX17574ATG+T

The MAX17574ATG+T is a high-efficiency, high-voltage synchronous step-down DC-DC converter from Analog Devices, designed for industrial control power supplies and general-purpose point-of-load applications. It features an integrated MOSFETs and operates over a wide 4.5V to 60V input voltage range, capable of delivering up to 3A of current.

This converter offers an adjustable output voltage from 0.9V up to 90% of VIN, with a feedback voltage regulation accuracy of ±0.9% over the -40°C to +125°C operating temperature range. It utilizes a peak-current-mode control architecture and supports PWM, PFM, or DCM control schemes. Key features include a programmable soft-start, an output enable/undervoltage lockout pin (EN/UVLO), and a RESET pin for power-good signaling.

The device is available in a compact 24-pin TQFN package (4mm x 5mm) with a surface mount type. Its design emphasizes reduced external components and total cost, offering internal compensation and synchronous operation without a Schottky diode. The adjustable switching frequency ranges from 100kHz to 2.2MHz, with options for external synchronization.

Applications include industrial control power supplies, general-purpose point-of-load, distributed supply regulation, base station power supplies, wall transformer regulation, and high-voltage, single-board systems. The MAX17574ATG+T is built to operate reliably in adverse industrial environments, incorporating hiccup mode overload protection and overtemperature protection.