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General
Description
The
CM2593
is a
monolithic
integrated
circuit that
provide
all the
active
functions
for a
step-down switching regulator,
capable
of
driving a
2A
load without
additional
transistor
component.
Requiring
a minimum
number
of
external
component,
the
board space
can be
saved easily.
The external
shutdown
function can
be controlled
by TTL
logic level
and then
come
into
standby
mode.
The
internal
compensation
makes
feedback
control
have good line
and
load
regulation
without
external
design.
Regarding
protected
function,
thermal shutdown
is to prevent
over
temperature
operating
from damage,
and current
limit
is against
over current
operating
of the output switch.
The
CM2593
operates
at
a switching
frequency
of 150Khz
thus
allowing
smaller sized
filter components
than what
would
be needed
with lower
frequency
switching
regulators.
Other features
include
a
guaranteed
+4%
tolerance
on
output voltage under
specified
input
voltage
and
output load
conditions,
and
+15%
on the oscillator
frequency.
The
output
version
included
fixed
3.3V,
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