资 源 简 介
The EL7554 is a full-feature synchronous 4A step-downregulator capable of up to 96% efficiency. This deviceoperates from 3V to 6V VIN input supply. With internal CMOSpower FETs, the device can operate at up to 100% duty raTIo,allowing for output voltage range from 0.8V up to nearlyVIN.The adjustable high switching frequency of up to 1MHzenables the use of small components, making the wholeconverter occupy less than 0.58 square inch with componentson one side of the PCB. The EL7554 operates at constantfrequency PWM mode, making external synchronizaTIonpossible. The EL7554 features soft-start and full start-upcontrol, which eliminates the in-rush current and enablesusers to control the start-up of mulTIple converters to anyconfiguraTIon with ease. The EL7554 also offers a ±5%voltage margining capability that allows raising and loweringof the supplies derived from the EL7554 to validate theperformance and reliability of system cards quickly and easilyduring manufacturing testing. A junction temperature indicatorconveniently monitors the silicon die temperature, savingdesigners time in the tedious thermal characterization.