DESCRIPTION
Demonstration circuit 1737A is a current-mode inverting
DC/DC converter featuring the LTC®3863.
The board operates from an input range of 4.5V to 16V,
and provides a –5.2V, 1.7A output or a –12V, 1A output
(jumper selectable). It operates at 400kHz and may be
synchronized to an external clock. A soft-start feature
controls output voltage slew rate at start-up, reducing
current surge and voltage overshoot. Burst Mode® operation
that improves efficiency at light loads can be enabled
with a jumper. A power good output signal is provided.
The demonstration board has options for larger MOSFET
and diode packages on the back of the board for higher
output current requirements.
This board is suitable for a wide range of automotive,
telecom, industrial, and other applications. The LTC3863
is available in small 12-pin thermally enhanced MSOP and
DFN Packages. For other output requirements, see the
LTC3863 data sheet or contact the LTC factory.