ME2149FP5G

ME2149 ULTRA-SMALL PACKAGE PWM/PFM SWITCHING CONTROL STEP-UP SWITCHING REGULATOR General Description Features The ME2149 series is a CMOS step-up  switching regulator which mainly consists of a reference voltage source, an oscillation circuit, Low voltage operation: Start-up is guaranteed from 0.9V(IOUT =1 mA )  an error amplifier, a phase compensation circuit, Duty ratio: Built-in PWM/PFM switching control circuit 15 to 78 % . a PWM/PFM switching control circuit. With an  oscillator frequency：1.0MHz internal low-ON-resistance Nch Power MOS, this  Output voltage range：