MP28164GD-Z

The MP28164 is a high-efficiency, lowquiescent current, buck-boost converter that
operates from an input voltage above, equal to,
or below the output voltage. The device
provides a compact solution for products
powered by one-cell Lithium-Ion or multi-cell
alkaline batteries where the output voltage is
within the battery voltage range.
The MP28164 uses current-mode control with
fixed PWM frequency for optimal stability and
transient response. The fixed 2MHz switching
frequency and integrated low RDS(ON) MOSFETs
minimize the solution footprint while maintaining
high efficiency.
To ensure the longest possible battery life, the
MP28164 uses an optional pulse skipping mode
that reduces the switching frequency under
light-load conditions. For other low-noise
applications where pulse skipping mode may
cause interference, a high-logic input on
MODE/SYNC guarantees fixed-frequency PWM
operation under all load conditions.
The MP28164 operates with an input voltage
from 1.2V to 5.5V to provide an adjustable
output voltage from 1.5V to 5V. With an input
from 2.5V to 5.5V, the device can supply 2A of
current to the load with a 3.3V output voltage.
The MP28164 is available in a small QFN-11
(2mmx3mm) package.