RichTek Technology Corporation Voltage Regulators - DC DC Switching Regulators RT6218BHRGJ8F

The RT6218BHRGJ8F is a synchronous step-down DC-DC converter designed for applications requiring efficient voltage regulation. It operates within an input supply voltage range of 4.5V to 18V and can deliver up to 2A of output current. The device features built-in low RDS(ON) power MOSFETs, which contribute to its high efficiency. This regulator utilizes Advanced Constant On-Time (ACOT,Ñ¢) control for fast transient response and maintains a fixed switching frequency of 650kHz. It is optimized for use with low-ESR ceramic output capacitors and offers a high-accuracy feedback reference voltage of ¬±1.5%. The output voltage can be adjusted up to 6.5V, and the device includes several protection features such as over-current protection, input under-voltage lockout, output under-voltage protection with hiccup mode, and over-temperature protection. The RT6218BHRGJ8F is packaged in a compact TSOT-23-8 form factor, making it suitable for space-constrained applications. It is particularly well-suited for use in set-top boxes, LCD TVs, home networking devices, and surveillance systems.