资 源 简 介
The ADP2503/ADP2504 are high efficiency, low quiescent current step-up/step-down dc-to-dc converters that can operate at inputvoltages greater than, less than, or equal to the regulated output voltage. The power switches and synchronous recTIfiers areinternal to minimize external part count. At high load currents, the ADP2503/ADP2504 use a current-mode, fixed frequencypulse-width modulaTIon (PWM) control scheme for opTImalstability and transient response. To ensure the longest battery life in portable applicaTIons, the ADP2503/ADP2504 have an optional power save mode that reduces the switching frequency underlight load conditions. For wireless and other low noise applica-tions where variable frequency power save mode may causeinterference, the logic control input sync forces fixed frequencyPWM operation under all load conditions.
