SY8386 Datasheet | Silergy

High Efficiency Fast Response, 6A, 28V Input Synchronous Step Down Regulator General Description The SY8386 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 6A current over a wide input voltage range of 4.5V to 24V. Silergy’s proprietary Instant-PWM™ fast-response, constant-on-time (COT) PWM control method supports high input/output voltage ratios (low duty cycles), and fast transient response while maintaining a near constant operating frequency over line, load and output voltage ranges. This control method provides stable operation without plex pensation and even with low ESR ceramic capacitors. Internal 38mΩ power and 19mΩ synchronous rectifier switches provide excellent efficiency over a range of applications, especially for low output voltages and low duty cycles. SY8386 also integrates a bypass switch which allows the IC to be powered by external DC source. Cycle-by-cycle current limit, input under voltage lock-out, internal soft-start, output under voltage protection and over voltage protection and thermal shutdown provide safe operation in all operating conditions. The SY8386 is available in a pact QFN2.5×2.5-16 package. Ordering Information - (- - )- Tempera ture Code Pa cka ge Code Optional Spec Code Ordering Number Package type Note SY8386RHC QFN2.5×2.5-16 -- Features - Low RDS(ON) for Internal Switches (Top/Bottom): 38/19mΩ - Wide Input Voltage Range: 4.5~24V - Integrated Bypass Switch: 1.2Ω - Instant PWM Architecture to Achieve Fast Transient Responses - Internal Soft-start Limits the Inrush Current - Pseudo-Constant Frequency: 500k Hz - Adjustable Output Voltage Application - 6A Output Current Capability - ±1% Internal Reference Voltage - PFM/USM Selectable Light Load Operation Mode - Power Good Indicator - Output Discharge Function - Cycle-by-cycle Valley and Peak Current Limit Protection - Programmable Valley Current Limit Threshold by ILMT Pin - Latch-off Mode Output Under Voltage...