SA24483 Datasheet | Silergy

Description The SA2448x is a high efficiency synchronous step-down DC-DC converter capable of delivering a load current of 1A/3A. It operates over a wide input voltage range of 4.5V to 36V and integrates main and synchronous MOSFET switches with very low RDS(ON) to minimize conduction loss. The SA2448x uses a peak current control scheme. The switching frequency is adjustable from 300k Hz to 2.2MHz using an external resistor. The SA24483E works at Force Continuous Conduction Mode (FCCM) under light load for small output voltage ripple. The SA24481/SA24483 feature frequency reduction and ultralow quiescent operating to achieve high efficiency under light load. Additionally, the internal soft-start function limits inrush current during power-up. The SA2448x is available in a QFN2×2-12 Package. Part Number SA24481TLQ SA24483TLQ SA24483ETLQ Output Current 1A 3A 3A Light Load Mode PFM PFM FCCM Key Features - Input Voltage Range: 4.5-36V - Low RDS(ON) for Internal Switches (Top/Bottom): 130/75mΩ - Low quiescent current: IQ = 18 µA (Typ.) - Internal pensation - Internal 1ms Soft-start Limits the Inrush Current - Adjustable Switching Frequency Range: 300k Hz to 2.2MHz - Light Load Operating Mode - SA24481/SA24483: PFM - SA24483E: FCCM - Output Current Capability - SA24481: 1A - SA24483/SA4483E: 3A - ±1% 0.6V Reference Over -40°C~125°C - Cycle-by-cycle Peak Current Limitation - Short Circuit Protection - Spread Spectrum Function - Thermal Shutdown and Auto Recovery - pact Package: QFN2×2-12 - Automotive AEC-Q100 Grade 1 Qualified - MSL Rating: MSL1 Applications - Automotive - Industrial - High-Voltage DC/DC Converters Typical Application VIN...