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The MAX15053 high-efficiency, current-mode, synchronous
step-down switching regulator with integrated power
switches delivers up to 2A of output current. The device
operates from 2.7V to 5.5V and provides an output voltage
from 0.6V up to 94% of the input voltage, making
the device ideal for distributed power systems, portable
devices, and preregulation applications.
The MAX15053 utilizes a current-mode control architecture
with a high gain transconductance error amplifier.
The current-mode control architecture facilitates
easy compensation design and ensures cycle-by-cycle
current limit with fast response to line and load transients.
The MAX15053 offers selectable skip-mode functionality
to reduce current consumption and achieve a higher
efficiency at light output load. The low RDS(ON) integrated
switches ensure high efficiency at heavy loads while
minimizing critical inductances, making the layout design
a much simpler task with respect to discrete solutions.
Utilizing a simple layout and footprint assures first-pass
success in new designs.
The MAX15053 features a 1MHz, factory-trimmed, fixedfrequency
PWM mode operation. The high switching frequency,
along with the PWM current-mode architecture,
allows for a compact, all-ceramic capacitor design.
The MAX15053 offers a capacitor-programmable softstart
reducing inrush current, startup into PREBIAS
operations, and a PGOOD open-drain output that can be
used as an interrupt and for power sequencing.
The MAX15053 is available in a 9-bump (3 x 3 array),
1.5mm x 1.5mm WLP package and is specified over the
-40NC to +85NC temperature range.