MAX1852EXT-T

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The MAX1852EXT-T is a dual supply, high-voltage, low-power step-down switching regulator (DC-DC) from Maxim Integrated. It operates from an input voltage range of 4.5 V to 26 V, and is ideal for applications that require high voltage design flexibility and low power consumption. The MAX1852EXT-T features a low standby current of 0.5 µA that further reduces total system power consumption. The device supports fixed output voltages from 0.6 V to 17 V, as well as adjustable voltages scalable up to 26 V using an external voltage divider. The MAX1852EXT-T is a versatile device, featuring adjustable frequency operation up to 2 MHz, programmable soft-start, and an adjustable, synchronizable PWM latch mode.

The MAX1852EXT-T is a non-synchronous step-down switching regulator that uses a unique architecture that combines the high efficiency of a non-synchronous buck converter with the fast transient response of a synchronous buck converter. By utilizing two P-channel MOSFETs in the power stage, the converter\'s output voltage can be further regulated by adjusting the dead time between the two switching transistors, allowing for direct compensation for external load transient response. It also features a low-voltage lockout protection that prevents the regulator from starting up until the input voltage falls below its threshold.

The MAX1852EXT-T also features an internal logic block that provides an externally programmable soft-start and adjustable frequency. An adjustable operating frequency range from 0.8 MHz to 2 MHz allows for optimized efficiency and eliminates the need for an external clock generator. The device also features a low-ripple PWM latch mode for improved EMI performance, which can be synchronized to an external clock signal. The MAX1852EXT-T also includes integrated overtemperature protection, overcurrent protection, and cycle-by-cycle current limit.

The MAX1852EXT-T is a versatile, efficient, and cost-effective solution for high-voltage power supply design. It provides excellent load and line regulation across the wide input voltage range, as well as fast transient response. It is an ideal choice for powering microcontrollers, FPGAs, and other digital ICs in a variety of applications such as medical, industrial, automotive, and renewable energy applications.

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