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MP28210
Ultra-Low 500nA IQ, Wide Input 2V to 5.5V, 1A Step-Down Regulator
with 1.2mmx1.6mm CSP Package
DESCRIPTION
The MP28210 is a monolithic power management unit containing a 1A, highefficiency, step-down, switching converter. The nA quiescent current provides extremely high efficiency when the load current is within the µA range. With a minimum input voltage as low as 2V, the MP28210 allows the system to operate directly from the battery.
The constant-on-time (COT) control scheme provides fast transient response, high light-load efficiency, and requires minimal capacitance. The regulation can be made tight by integrating an error amplifier to correct the output voltage.
The CTRL pins control the on/off and output voltage selection functions.