MAX1718T Notebook CPU Step-Down Controller

The MAX1718T Step-down controller is intended for core CPU DC-to-DC converters in notebook computers. It features a dynamically adjustable output, ultra-fast transient response, high-DC accuracy, and high efficiency needed for leading-edge CPU core power supplies. Maxim's proprietary Quick-PWM quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency.
The output voltage CAN be dynamically adjusted through the 5-bit digital-to-analog converter (DAC) over a 0.6V to 1.75V range. The MAX1718T has an internal multiplexer that accepts three unique 5-bit VID DAC codes corresponding to performance, battery, and suspend modes. Precision slew-rate control provides "just-in-time" arrival at the new DAC setting, minimizing surge currents to and from the battery.
A pair of complementary offset control inputs allows easy compensation for IR drops in PC board traces or creation of a voltage-positioned power supply. Voltage positioning modifies the load-transient response to reduce output capacitor requirements and total system power dissipation.
Single-stage buck conversion allows these devices to directly step down High-Voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the 5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size.
The MAX1718T is available in a 28-pin QSOP package.
By Maxim Integrated Products
Part Manufacturer Description Datasheet Samples
MAX1718TEEI Maxim Integrated Products Switching Controller, Current-mode, 1000kHz Switching Freq-Max, PDSO28, 0.150 INCH, QSOP-28
MAX1718T 's PackagesMAX1718T 's pdf datasheet

MAX1718T Pinout, Pinouts
MAX1718T pinout,Pin out
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MAX1718T Application circuits
MAX1718T circuits
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