RT6206BHGQW Datasheet PDF - Richtek

●The RT6206BHGQW is a synchronous step-down DC-to-DC Converter with advanced constant on-time (ACOTTM) mode control. It achieves high power density to deliver up to 5.5A output current from a 4.5 to 18V input supply. The proprietary ACOTTM 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, RT6206B keeps an excellent constant switching frequency under line and load variation and the integrated synchronous power switches with the ACOTTM 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 RT6206B.

● ACOTTM control for fast transient response

● Power Good

● 80mR high-side, 35mR low-side switch

● Adjustable soft-start

● Force-PWM mode

● Synchronous

● Stable with low ESR ceramic output capacitors.

● Thermal shutdown

● Up to 95% efficiency

● 35mR Internal low site N-MOSFET