Adjustable step-down controller with synchronous rectification

 

 

 

Features

 Input voltage range from 1.8V to 14V 

 Supply voltage range from 4.5V to 14V

 Adjustable output voltage down to 0.6V with 

±0.8% accuracy over line voltage and 

temperature (0°C~125°C)

 Fixed frequency voltage mode control

 tON 

lower than 100ns

 0% to 100% duty cycle

 Selectable 0.6V or 1.2V internal voltage 

reference

 External input voltage reference

 Soft-start and inhibit

 High current embedded drivers 

 Predictive  anti-crossconduction control

 Selectable uvlo threshold (5V or 12V BUS)

 Programmable high-side and low-side RDS(on)

sense over-current-protection

 Switching frequency programmable from 

100kHz to 1MHz

 Master/slave synchronization with 180° phase 

shift

 Pre-bias start up capability (L6730)

 Selectable source/sink or source only 

capability after soft-start (L6730)

 Selectable constant current or hiccup mode 

overcurrent protection after soft-start (L6730B)

Power good output with programmable delay

 Over voltage protection with selectable 

latched/not-latched mode

 Thermal shut-down

 Package: HTSSOP20

 

 

Applications

 High performance / high density DC-DC 

modules

 Low voltage distributed DC-DC

 niPOL converters

 DDR memory supply

 DDR memory bus termination supply

 

 

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