IRF voltage regulator for DCDC appsInternational Rectifier introduced the IR3870M SupIRBuck integrated voltage regulator for notebook and desktop computers, game consoles, consumer electronics applications such as set top boxes, and general purpose point-of-load (POL) DC/DC converters. The IR3870M features a hysteretic constant on-time modulator with adaptive dead-time control and on-state resistance (RDS(on)) current sensing to achieve maximum efficiency for notebooks. The IR3870M is capable of delivering up to 10 A in environments with up to 60°C ambient temperatures and features diode emulation for improved light load efficiency. The device also offers a charge pump output (CPO) option for enhancing the MOSFET gate drive to deliver highest efficiency at medium to full load conditions. In addition, the IR3870M has a wide input voltage range of 3 V to 26 V and can be programmed for output voltages of 0.5 V to 12 V by an external resistor divider network.

International Rectifier