RT7272B

® RT7272B 3A, 36V, 500kHz Synchronous Step-Down Converter General Description The RT7272B is a high efficiency, current mode synchronous step-down DC/DC converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates a 150mΩ high side and a 80mΩ low side MOSFET to achieve high conversion efficiency up to 95%. The current mode control architecture supports fast transient response and simple compensation circuit. A cycle-by-cycle current limit function provides protection against shorted output and an internal soft-start eliminates input current surge during start-up. The RT7272B provides complete protection functions such as input under voltage lockout, output under voltage protection, over current protection and thermal shutdown. The RT7272B is available in the thermal enhanced SOP-8 (Exposed Pad) package. Features z z z z z z z z z z z z z z 4.5V to 36V Input Voltage Range 3A Output Current Internal N-MOSFETs Current Mode Control Fixed Frequency Operation : 500kHz Adjustable Output Voltage from 0.8V to 30V High Efficiency Up to 95% Stable with Low ESR Ceramic Output Capacitors Cycle-by-Cycle Current Limit Input Under Voltage Lockout Output Under Voltage Protection Thermal Shutdown Protection Adjustable Current Limit RoHS Compliant and Halogen Free Applications z z z z Ordering Information RT7272B Package Type SP : SOP-8 (Exposed Pad-Option 2) Lead Plating System G : Green (Halogen Free and Pb Free) Note : Richte...