General Description
The RT8283B is a high-efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 3A output current from a 4.5V to 23V input supply. The RT8283Bs current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT8283B provides output under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnect, enabling easy power management in battery powered systems. The RT8283B is available in a SOP-8 (Exposed Pad) package

Features
• ±1.5% High Accuracy Feedback Voltage
• 4.5V to 23V Input Voltage Range
• 3A Output Current
• Integrated N-MOSFET Switches
• Current Mode Control
• Fixed Frequency Operation : 1.2MHz
• Adjustable Output from 0.8V to 20V
• Up to 95% Efficiency
• Programmable Soft-Start
• Stable with Low-ESR Ceramic Output Capacitors
• Cycle-by-Cycle Over Current Protection
• Input Under Voltage Lockout
• Output Under Voltage Protection
• Thermal Shutdown Protection
• RoHS Compliant and Halogen Free

Applications
• Wireless AP/Router
• Set-Top-Box
• Industrial and Commercial Low Power Systems
• LCD Monitors and TVs
• Green Electronics/Appliances
• Point of Load Regulation of High-Performance DSPs