RT8283B Datasheet | Richtek

3A, 23V, 1.2MHz Synchronous Step-Down Converter 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 RT8283B's current mode architecture and external pensation 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 batterypowered 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 Ro HS pliant and Halogen Free Ordering Information RT8283B Package Type SP : SOP-8 (Exposed Pad-Option 1) Lead Plating System G : Green (Halogen Free and Pb Free) H : UVP Hiccup L : UVP Latch-Off Note : Richtek products are : ` Applications Wireless AP/Router Set-Top-Box Industrial and mercial Low Power Systems LCD Monitors and TVs Green Electronics/Appliances Point of Load Regulation of High-Performance DSPs http://..net/ Ro HS pliant and patible with the current requirements of IPC/JEDEC J-STD-020. Suitable for use in Sn Pb or Pb-free soldering processes. Pin Configurations (TOP VIEW) BOOT VIN 2 3 4 8 ` SS EN P FB Marking Information RT8283BGSP : Product Number RT8283B x GSPYMDNN SW GND 7 6 5 x : H or L YMDNN :...