MAX5090CATE+

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The MAX5090CATE+ represents a Power Management Integrated Circuit (PMIC) featuring a DC-DC switching regulator. It is manufactured by Maxim Integrated and can be used in applications such as microprocessors, FPGAs, mobile phones, automotive infotainment, Wi-Fi, and Bluetooth systems. It is a monolithic 3x3 surface-mount credit-card-/block-type device that takes in as input either a 5V/2.8V/1.8V supply or a battery up to 15V. The output of the device is adjustable from 0.45V-5.9V and can deliver a maximum output current of 600mA.

The MAX5090CATE+ operates with a synchronous buck architecture and uses external components, such as an inductor, bypass capacitors, and two MOSFETs, to form a complete power-conversion circuit. It performed on switching speed of up to 4MHz, with low on-resistance and fast switching edge response. The maximum inductor current is limited to only 350mA, which allows the use of low-cost, small-sized inductors.

The input voltage is monitored for under-voltage and over-voltage, and the output voltage is monitored for over-voltage with UVLO and overcurrent/short-circuit protection. It has an onboard precision voltage reference with 0.1% initial accuracy and 0.3% accuracy over temperature. It also has a programmable soft-start and automatic PGOOD signal output. This maximizes the start-up current, combined with an oscillator frequency of up to 4MHz, providing a quick transient response with low output ripple.

The MAX5090CATE+ includes both internal and external compensation, resulting in excellent line- and load-regulation accuracy. Additionally, it has a very low supply current of 130µA at light load. The device also boasts high efficiency and can operate at up to 95% efficiency at light load. This makes the device suitable for applications with dynamic requirements and low thermal margins.

The MAX5090CATE+ is packaged in a 5x5mm QFN package and is rated for operation at temperatures from -40°C to +105°C. It is compliant with all relevant safety standards, including UL60950 and IEC60950. It also passed automotive grade qualification tests with flying colors, making it suitable for automotive design.

In summary, the MAX5090CATE+ represents a complete compact DC-DC switching regulator solution for applications requiring input and output voltage accuracy, programmable flexibility, low component count, and low power consumption. It is offered in a surface conventional package and is easy to use, making it an ideal choice for high-performance solutions.

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