15.5.2 Applications
x Cable set top boxes
x Satellite set top boxes
x DVD players
x HDTV
x Personal video recorders (PVR)
x Video on demand (VOD)
15.5.3 Description
The FMS6145 Low Cost Video Filter (LCVF) is intended to replace passive LC filters and drivers with a
low-cost integrated device. Five 4th order filters provide improved image Quality compared to typical 2nd
or 3rd order passive solutions.
The FMS6145 may be directly driven by a DC-coupled DAC output or an AC-coupled signal. Internal
diode clamps and bias circuitry
may be used if AC-coupled inputs are required.
The outputs can drive AC or DC-coupled single (150) or dual(75) loads. DC-coupling the outputs
removes the need for output coupling capacitors. The input DC levels will be offset approximately +280mV
at the output.
15.6. MP1593
3A, 28V Step-Down Converter
15.6.1 Description
The MP1593 is a step-down regulator with an internal Power MOSFET. It achieves 3A
continuous output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilisation. Fault
condition protection includes cycle-by-cycle current limiting and thermal shutdown. Adjustable
soft-start reduces the stress on the input source at turn-on. In shutdown mode the regulator
draws 20μA of supply current.
The MP1593 requires a minimum number of readily available external components to complete
a 3A step down DC to DC converter solution.
15.6.2 Features
x 3A Output Current
x Programmable Soft-Start
x 100m Internal Power MOSFET Switch
x Stable with Low ESR Output Ceramic Capacitors
x Up to 95% Efficiency
x 20μA Shutdown Mode
x Fixed 385KHz Frequency
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