MAX8833

19-0725; Rev 0; 8/07 KIT ATION EVALU E L B AVAILA Dual, 3A, 2MHz Step-Down Regulator General Description Features o 35mΩ On-Resistance Internal MOSFETs o Dual, 3A, PWM Step-Down Regulators o Fully Protected Against Overcurrent, Short Circuit, and Overtemperature o ±1% Output Accuracy over Load, Line, and Temperature o Operates from 2.35V to 3.6V Supply o REFIN on One Channel for Tracking or External Reference o Integrated Boost Diodes o Adjustable Output from 0.6V to 0.9 x VIN o Soft-Start Reduces Inrush Supply Current o 0.5MHz to 2MHz Adjustable Switching, or FSYNC Input o All-Ceramic-Capacitor Design o 180° Out-of-Phase Operation Reduces Input Ripple Current o Individual Enable Inputs and PWRGD Outputs o Available in 5mm x 5mm Thin QFN Package MAX8833 www.datasheet4u.com The MAX8833 high-efficiency, dual step-down regulator is capable of delivering up to 3A at each output. The device operates from a 2.35V to 3.6V supply, and provides output voltages from 0.6V to 0.9 x VIN, making it ideal for on-board point-of-load applications. Total output error is less than ±1% over load, line, and temperature. The MAX8833 operates in PWM mode with a switching frequency ranging from 0.5MHz to 2MHz, set by an external resistor. It can also be synchronized to an external clock in the same frequency range. Two internal switching regulators operate 180° out-of-phase to reduce the input ripple current, and consequently reduce the required input capacitance. The high operating frequency m...