RC5037

www.fairchildsemi.com RC5037 Adjustable Switching Regulator Controller Features High power switch-mode DC-DC controller can provide in excess of 13A Output voltage adjustable from 1.5V to 3.6V 85% efficiency Cumulative accuracy < 3% over line, load, and temperature variations Overvoltage and short circuit protection Built-in soft start Description The RC5037 is a high power, switch-mode DC-DC controller that provides efficient power for all low-voltage applications. This controller has a built-in Soft Start feature which offers system protection during power-up by reducing both inrush current and output overshoot. When combined with the appropriate external circuitry, the RC5037 can deliver load currents as high as 13A at efficiencies as high as 88%. The RC5037 can generate output voltages from 1.5V up to 3.6V using external resistors. The RC5037 is designed to operate in a constant on-time control mode under all load conditions. Its accurate low TC reference eliminates the need for precision external components in order to achieve the tight tolerance voltage regulation required by many applications. Short circuit current protection is provided through the use of a current sense resistor, while overvoltage protection is provided internally. Applications I/O and AGP power for desktop computers High efficiency power for ASICs High efficiency power for DSPs Adjustable step-down power supplies Block Diagram 5V 2 +12V 4 +5V RC5037 Feedback Control 3 8 1 Os...