A low voltage sub-nanosecond pulsed current driver for driving current to a load, which comprises a regulated current source connected to the load, for driving controlled current to the load (which may be a laser diode for LIDAR applications); a current routing network, being connected in parallel to the load following the regulated current source and consisting of a plurality of controlled power switches; and a controller for individually timing the operation of the plurality of controlled power switches, to generate a current pulse having desired narrow pulse width and reduced rise and fall times that will be delivered to the load.
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