The MAX1763 evaluation kit (EV kit) is a fully assembled
and tested surface-mount printed-circuit board (PCB)
that contains two separate boost switching-regulator
circuits. The first circuit (left side) utilizes a MAX1763 in
a 16-pin QSOP package and is configured for a +3.3V
output that accepts inputs from a +0.7V to VOUT
source and provides up to 1.1A of current. A 1- or 2-cell
alkaline battery source can also power the input.
The second circuit (right side) uses a MAX1763 in a
high-power 16-pin TSSOP-EP (exposed pad) package,
is configured for a +3.3V output, and supplies up to
1.4A of current. It accepts inputs from a +0.7V to +5.5V
source, or a 1- or 2-cell alkaline battery can power the
input. The right side includes a low-dropout (LDO) linear
regulator that draws power from the +3.3V output
and provides +2.8V at up to 1A of current.
The MAX1763 features an internal n-channel MOSFET
switch, a P-channel MOSFET synchronous rectifier, and
pulse-width modulation (PWM) operation for maximum
efficiency. The MAX1763 EV kit demonstrates low quiescent
current and high efficiency up to 96% for maximum
battery life. Operation at 1MHz allows the use of
tiny surface-mount components.
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