Sync-rect Pfm Step-up Dc-dc Converter With Low-battery Detector And Ring-killer

NCP1411 is a monolithic micropower high frequency Boost (stepup) voltage switching converter IC specially designed for battery operated handheld electronic products up to 250 mA loading. It integrates Synchronous Rectifier for improving efficiency as well as eliminating the external Schottky Diode High switching frequency (up to 600 kHz) allows low profile inductor and output capacitor being used. LowBattery Detector, LogicControlled Shutdown and CyclebyCycle Current Limit provide valueadded features for various batteryoperated applications. The innovative RingKiller circuitry guarantees quiet operation in discontinuous conduction mode. With all these functions ON, the device quiescent supply current is only 9.0 A typical. This device is available in the space saving compact Micro8
package. By ON Semiconductor