GS5571

1.5 MHz, 600mA Synchronous Step-Down Converter With Low Quiescent Current Product Description GS5571 is a 1.5Mhz constant frequency, slope compensated current mode PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery. The GS5571 can supply 600mA of load current from a 2.5V to 5.5V input voltage. The output voltage can be regulated as low as 0.6V. The GS5571 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Idle mode operation at light loads provides very low output ripple voltage for noise sensitive applications. The GS5571 is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version and fixed output voltage of 1.2V, 1.5V and 1.8V Features              High Efficiency: Up to 96%. 1.5Mhz Constant Switching Frequency. 600mA Output Current at VIN=3.0V. Integrated Main switch and synchronous rectifier. No Schottky Diode Required. 2.5V to 5.5V Input Voltage Range. Output Voltage as Low as 0.6V. 100% Duty Cycle in Dropout. Low Quiescent Current: 30µA. <1uA Shutdown Current. Slope Compensated Current Mode Control for Excellent Line and Load Transient Response. Short Circuit and Thermal Fault Protection Space Saving 5-Pin Thin SOT23 package. Applications       Cellular and Smart Phones...