SA24506 Datasheet | Silergy

Description The SA24506 is a high-efficiency synchronous step-down DC-DC regulator featuring internal power and synchronous rectifier switches. It operates with fixed frequency and peak current control across a wide input voltage range of 3.5V to 36V, delivering up to 6A of continuous output current. The SA24506 is specifically designed with a symmetric QFN package and adjustable LX rise time to achieve optimal EMI performance. The switching frequency can be adjusted from 300k Hz to 2.3MHz, or synchronized to an external clock. The frequency selection allows for pliance with application EMI limits and helps to avoid noise in critical frequency bands. The SA24506 offers excellent efficiency across a wide range of applications by providing internal 41mΩ power and 21mΩ synchronous rectifier switches, frequenc y reduction at light load conditions, and an external bias input. The 1μA shutdown supply current enables the device to be used in battery-powered applications. The SA24506 ensures safe operation under all conditions, offering cycleby-cycle current limiting, input under-voltage lockout, internal soft-start, output under-voltage and over-volt age protection, and thermal shutdown. The SA24506 is available in a QFN 3.5×4-14 package with wettable flanks. Features - 3.5V to 36V Input Voltage Range - Support 42V Load Dump - Support 3.0V Cold Crank - 6A Output Current Capability - Low RDS(ON) for Internal Switches: 41mΩ Top, 21mΩ Bottom - Typical 11.5µA Quiescent Current and 1µA Shutdown Current. - 300k Hz to 2.3MHz Switching Frequency - Synchronization to External Clock - Spread Spectrum Function - Hiccup Mode Output Short-Circuit Protection - EN On/Off Control with Accurate Threshold - Cycle-by-Cycle Peak Current Limit - Power Good Indicator - 1V ±1% Reference Voltage Over -40˚C to 150˚C Temperature Range - QFN3.5×4-14 Package with Wettable Flanks - Automotive AEC- Q100 Grade 1 Certified Applications - Automotive - Industrial - High Voltage DC/DC Converters Typical...