RT8812C Datasheet | Richtek

® Dual-Phase PWM Controller with PWM-VID Reference General Description The RT8812C is a 2/1 phase synchronous Buck PWM controller which is optimized for high performance graphic microprocessor and puter applications. The IC integrates a Constant-On-Time (COT) PWM controller, two MOSFET drivers with internal bootstrap diodes, as well as channel current balance and protection functions including Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), current limit, and thermal shutdown into the WQFN-20L 3x3 package. The RT8812C adopts RDS(ON) current sensing technique. Current limit is acplished through continuous inductorcurrent-sense, while RDS(ON) current sensing is used for accurate channel current balance. Using the method of current sampling utilizes the best advantages of each technique. The RT8812C Features external reference input and PWMVID dynamic output voltage control, in which the feedback voltage is regulated and tracks external input reference voltage. Other Features include adjustable switching frequency, dynamic phase number control, internal softstart, power good indicator, and enable functions. Features - Dual-Phase PWM Controller - Two Embedded MOSFET Drivers and Embedded Switching Boot Diode - External Reference Input Control - PWM-VID Dynamic Voltage Control - Dynamic Phase Number Control - Lossless RDS(ON) Current Sensing for Current Balance - Internal Soft-Start - Adjustable Current Limit Threshold - Adjustable Switching Frequency - UVP/OVP Protection - Shoot Through Protection and Short Pulse Free Technology - Support an Ultra-Low Output Voltage as Standby Voltage - Thermal Shutdown - Power Good Indicator - Ro HS pliant and Halogen Free Applications - CPU/GPU Core Power Supply - Notebook PC Memory Power Supply - Chipset/RAM Power Supply - Generic DC/DC Power...