MIC2238
2.
5MHz Dual Phase PWM Buck Regulator
General Description
The Micrel MIC2238 is dual output 2-phase synchronous buck (step down) PWM DC/DC switching regulator.
Power conversion efficiencies of above 95% are easily obtainable for a wide range of applications and loads.
An ultra-low quiescent current of 28µA at light loads assures minimum current draw in battery powered applications that require standby modes.
The 2.
5MHz PWM operation of MIC2238 allows the use of miniature 1µH, 2.
2µH or 4.
7µH inductor with the use of 2.
2µF ceramic output capacitor.
The MIC2238 operates from 2.
5V to 5.
5V input and is available in fixed output
voltage versions to save space and reduce external component ...