EL7551 Datasheet - Renesas

EL7551 Monolithic 1Amp DC:DC Step-down Regulator

CONDITIONS MIN TYP VREF VREFTC VREFLOAD VRAMP IOSC_CHG IOSC_DIS IVDD+VDRV IVDD_OFF VDD_OFF VDD_ON TOT THYS ILEAK ILMAX RDSON RDSONTC VFB VFB_LINE VFB_LOAD VFB_TC IFB VEN_HI VEN_LO IEN Reference Accuracy Reference Temperature Coefficient Reference Load Regulation Oscillator Ramp Amplitude Oscilla.

NOT RECOMMENDED FOR NEW DESIGNS SEE EL7531 OR EL7536 EL7551 Monolithic 1Amp DC:DC Step-down Regulator DATASHEET FN7291 Rev 1.00 March 21, 2006 The EL7551 is an integrated, synchronous step-down regulator with output voltage adjustable from 1.0V to 3.8V. It is capable of delivering 1A continuous current at up to 95% efficiency. The EL7551 operates at a constant frequency pulse width modulation (PWM) mode, making external synchronization possible. Patented on-chip resistorless current sensing en.

EL7551 Features

* Integrated synchronous MOSFETs and current mode controller

* 1A continuous output current

* Up to 95% efficiency

* 4.5V to 5.5V input voltage

* Adjustable output from 1V to 3.8V

* Cycle-by-cycle current limit

* Precision reference

* ±

EL7551-Renesas.pdf