MAX5065

www.DataSheet4U.com 19-3035; Rev 1; 11/03 Dual-Phase, +0.6V to +3.3V Output Parallelable, Average-Current-Mode Controllers General Description The MAX5065/MAX5067 dual-phase, PWM controllers provide high-output-current capability in a compact package with a minimum number of external components. The MAX5065/MAX5067 utilize a dual-phase, average-current-mode control that enables optimal use of low RDS(ON) MOSFETs, eliminating the need for external heatsinks even when delivering high output currents. Differential sensing enables accurate control of the output voltage, while adaptive voltage positioning provides optimum transient response. An internal regulator enables operation with input voltage ranges of +4.75V to +5.5V or +8V to +28V. The high switching frequency, up to 500kHz per phase, and dual-phase operation allow the use of low-output inductor values and input capacitor values. This accommodates the use of PC boardembedded planar magnetics achieving superior reliability, current sharing, thermal management, compact size, and low system cost. The MAX5065/MAX5067 also feature a clock input (CLKIN) for synchronization to an external clock, and a clock output (CLKOUT) with programmable phase delay (relative to CLKIN) for paralleling multiple phases. The MAX5065/MAX5067 also limit the reverse current if the bus voltage becomes higher than the regulated output voltage. These devices are specifically designed to limit current sinking when multiple power-supply modules are pa...