SY8120I - Silergy

SY8120I Synchronous Step Down Regulator

The SY8120I is a high efficiency, synchronous stepdown DC/DC converter capable of delivering 2A load current. The SY8120I operates over a wide input voltage range from 4.2V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. The SY8120I adopts the instant PWM architecture to achieve fast transient .

Features

• Low RDS(ON) for Internal Switches (Top/Bottom): 130mΩ/105mΩ
• 4.2-18V Input Voltage Range
• 2A Output Current Capability
• 500kHz Switching Frequency Minimize the External Components
• Stable with 10µF COUT and 1.5µH Inductor
• Instant PWM Architecture to Achieve Fast Transient Responses
• Internal Soft-start Limits the Inrush Current
• Cycle-by-cycle Peak/Valley Current Limitation
• Hic-cup Mode Output Short Circuit Protection
• Thermal Shutdown with Auto Recovery
• Compact Package SOT23-6 Applications
• Set Top Box
• Portable TV
• DSL Modem
• LCD TV
• IP CAM
• Networking Figure1. Schemati.