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the fr9608 is a synchronous step-down dc/dc converter that provides wide 4.5v to 28v input voltage range and 3a continuous load current capability.

the fr9608 fault protection includes cycle-by-cycle current limit, input uvlo, output over voltage protection and thermal shutdown. besides, adjustable soft-start function prevents inrush current at turn-on. this device uses current mode control scheme which provides fast transient response. internal compensation function reduces external compensation components and simplifies the design process. in shutdown mode, the supply current is less than 1μa.

the fr9608 is available in an sop-8 (exposed pad) package, provides a very compact system solution and good thermal conductance.

• high efficiency up to 96%
• low rds(on) integrated power mosfet(90mω /70mω)
• internal compensation function
• wide input voltage range: 4.5v to 28v
• adjustable output voltage down to 0.925v
• 3a output current
• fixed 340khz switching frequency
• current mode operation
• adjustable soft-start
• cycle-by-cycle current limit
• input under voltage lockout
• over-temperature protection with auto recovery
• hiccup short circuit protection
• <1μa shutdown current
• sop-8 (exposed pad) package