MAX5071CASA

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The MAX5071CASA is a step-up DC-DC switcher controller that offers high current output capabilities using 0.65μm CMOS technology. It is a highly integrated, single-stage synchronous switching regulator that implements peak current-mode control and current-sharing, enabling the use of efficient MOSFETs to achieve high step-up ratios with fast response times and low output ripple. The MAX5071CASA has the flexibility to be used in a variety of applications such as powering DSPs, FPGAs, ASICs, and microprocessors. It provides internal overvoltage protection, as well as overcurrent and short-circuit protection on its outputs, resulting in a robust, low-cost solution for a wide range of applications.

The MAX5071CASA is a DC-DC controller for regulating adjustable step-up converters with a voltage output up to 30V and a current output up to 500mA. It has a start-up voltage as low as 2V and a total system efficiency up to 87%. It implements peak current-mode control with an internal transconductance amplifier to provide constant on-time at light loads, while maintaining fast response times at large loads and minimizing output ripple. The controller also features current-sharing capabilities, internal MOSFET and Schottky protection, programmable soft-start and frequency dithering, and programmable overcurrent and overvoltage protections. The operation frequency is adjustable up to 2MHz, allowing an optimized system routing solution.

The MAX5071CASA operates in conjunction with an external low-side switch, such as an N-channel MOSFET, and two external filter inductors to create a synchronous step-up DC-DC converter. The MAX5071CASA is a voltage-mode peak current-mode controller that senses the current through the inductor. An internal transconductance amplifier provides a low-power, constant on-time operation. The on-time is determined by an internal comparator that compares the inductor current to an externally programmed reference current. When the inductor current reaches the reference current, the MAX5071CASA turns off the low-side switch and the output voltage is regulated.

The MAX5071CASA features programmable soft-start, frequency dithering, and overcurrent and overvoltage protections. The soft-start function limits the inrush current at the time of system startup and provides a smooth transition of the step-up converter into steady-state operation. The frequency dithering function also helps reduce output noise by randomly varying the operating frequency. The overcurrent and overvoltage protections prevent catastrophic damage in case of an out-of-regulation situation. The MAX5071CASA is available in a 6-pin SOT-23 package and offers high system performance in space-constrained applications.

In summary, the MAX5071CASA is a single-stage, step-up DC-DC switcher controller ideal for powering DSPs, FPGAs, ASICs, and microprocessors. It provides internal overvoltage protection, as well as overcurrent and short-circuit protection on its outputs. It implements peak current-mode control with an internal transconductance amplifier to achieve high step-up ratios with fast response times and low output ripple, making it well-suited to a variety of applications. The MAX5071CASA is a robust, low-cost solution for step-up DC-DC converters.

The specific data is subject to PDF, and the above content is for reference