RT6202B Datasheet | Richtek

Description The RT6202A/B is a synchronous step-down DC/DC converter with Advanced Constant On-Time (ACOT®) mode control. It achieves high power density to deliver up to 5A output current from a 4.5V to 18V input supply. The proprietary ACOT® mode offers an optimal transient response over a wide range of loads and all kinds of ceramic capacitors, which allows the device to adopt very low ESR output capacitor for ensuring performance stabilization. In addition, RT6202A/B keeps an excellent constant switching frequency under line and load variation and the integrated synchronous power switches with the ACOT® mode operation provides high efficiency in whole output current load range. Cycle-by-cycle current limit provides an accurate protection by a valley detection of low side MOSFET and external soft-start setting eliminates input current surge during startup. Protection functions include thermal shutdown for RT6202A/B. The RT6202A/B are available in the SOP-8 (Exposed Pad) package. Pin Configuration (TOP VIEW) EN FB VREG5 SS VIN BOOT SW GND SOP-8 (Exposed Pad) Features - ACOT® Mode Enables Fast Transient Response - 4.5V to 18V Input Voltage Range - 5A Output Current - 35mΩ Internal Low Side N-MOSFET - Advanced Constant On-Time Control - Support All Ceramic Capacitors - Up to 95% Efficiency - 650k Hz Switching Frequency at all Load Current (RT6202B) - Discontinuous Operating Mode at Light Load (RT6202A) - Adjustable Output Voltage from 0.765V to 8V - Adjustable Soft-Start - Cycle-by-Cycle Current Limit - Input Under Voltage Lockout - Thermal Shutdown - Ro HS pliant and Halogen Free Applications - Industrial and mercial Low Power Systems - puter Peripherals - LCD Monitors and TVs - Green Electronics/Appliances - Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs Simplified Application Circuit VIN Enable RT6202A/B...