The 877217-LM2630MTCX-ADJ is a DC-DC switching controller integrated circuit (IC) used in power management applications. It functions as a step-down converter and has a buck topology. The switching frequency can be adjusted between 200kHz and 400kHz. It has two outputs with a transistor driver output type. The control features include current limit, dead time control, enable, frequency control, power good, and soft start. The duty cycle can reach up to 96%. It is suitable for surface mount installation with a 20-TSSOP package. This product is manufactured by National Semiconductor (TI) and is currently active in the market. It is commonly used in power supply and voltage regulation applications.