RT8131B Datasheet | Richtek

® 5V High Efficiency Synchronous Buck PWM Controller General Description The RT8131B is a high efficiency single phase synchronous Buck DC-DC controller with 5V supply voltage. The RT8131B has embedded MOSFET gate driver with high driving capability, supporting driving voltage up to 5V. This device uses lossless low-side MOSFET RDS(ON) current sense technique for over-current protection with adjustable threshold set by the LGATE pin (LGOCS). Other Features include power good indication, enable/ disable control and internal soft-start. The RT8131B also provides fault protection functions to protect the power stage output. With above functions, the IC provides customers a cost-effective solution for high efficiency power conversion. The RT8131B is available in the WDFN10L 3x3 package. Ordering Information Package Type QW : WDFN-10L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richtek products are :  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. Marking Information KT=YM DNN KT= : Product Code YMDNN : Date Code Features - High Light Load Efficiency - Single 5V Driver Voltage - Integrated High Driving Capability N-MOSFET Gate Drivers - 300k Hz Fixed Frequency Internal Oscillator - 88% Maximum PWM Duty Cycle - Power Good Indicator - Enable/Disable Control - Internal Soft-Start - Lossless Low-Side MOSFET RDS(ON) Current Sensing for Over-Current Fault Monitoring - LGATE Over-Current Setting (LGOCS) - OCP, UVP, OVP, OTP, UVLO Applications - Motherboard, Memory/Chip-Set Power - Graphic Card, GPU/Memory Core...