Datasheet Monolithic Power Systems MP28300 — 数据表

MP28300
The Future of Analog IC Technology Ultra-Low 500nA Iq, Wide Input 2V-5.5V,
300mA Step-Down Regulator Plus300nA Iq,
2V-5.5V Input, 100mA LDO in 2x2 QFN DESCRIPTION FEATURES The MP28300 is a monolithic powermanagement unit containing 300mA, highefficiency, step-down, switching converters and
a 100mA LDO regulator. The nanoamp
quiescent current provides extremely high
efficiency when the load current is down in the
µA range. With minimum input voltage as low
as 2V, the MP28300 allows the system to
operate directly from the battery.  The constant-on-time 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.
An 100mA LDO regulator provides easy system
configuration with clean output voltage.  The CTRL pins control the on/off and output
voltage selection functions.
Fault protection features include under-voltage
lockout (UVLO), over-current protection (OCP),
and thermal shutdown.
The MP28300 requires a minimal number of
readily
available, …