CYT3406

CYT3406 Synchronous Buck DC/DC Converter CYT3406 Description The CYT3406 is high efficiency synchronous, PWM step-down DC/DC converters working under an input voltage range of 2.5V to 5.5V. This feature makes the CYT3406 suitable for single Li-lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 200uA with no load, and drops to < 1uA in shutdown. The internal synchronous switch is desired to increase efficiency without an external Schottky diode. The 1.4 MHz fixed switching frequency allows the using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint. The CYT3406 converters are available in the industry standard SOT-23-5 power packages (or upon request). Typical Applications Features Up to 95% Efficiency Current mode operation for excellent line and load transient response Low quiescent current: 230uA Low Switch on Resistance RDS(ON), Internal Switch: 0.35 ...