CM3107

CM3107 2 Amp Source/ Sink Bus Termination Regulator for DDR Memory and Front Side Bus Applications Features Ideal for Intel 865 Front Side Bus VTT and DDR VTT applications Sinks and sources 2 Amps Over current protection Over temperature protection Integrated power MOSFETs www.DataSheet4U.com Excellent accuracy (0.5% load regulation) Selectable output (1.225V/1.45V or VDDQ/2) 8-lead SOIC and PSOP packages Lead-free versions available Product Description The CM3107 is a sinking and sourcing regulator specifically designed for series-parallel bus termination for high-speed chip set busses as well as DDR memory systems. It can source and sink current up to 2.0A with a load regulation of 0.5%. The VTT output voltage is selectable by VDDQSEL and FSBSEL pins. The VDDQSEL pin controls whether the CM3107 is in DDR memory mode with VTT=VDDQ/2, or in FSB mode. In FSB mode, FSBSEL controls whether VTT is 1.225V or 1.45V. This allows the same chip to be used in two different circuits on an Intel 865-based motherboard. The CM3107 provides over current and over temperature protection, which protect the chip from excessive heating due to high current and high temperature. A shutdown capability using an external transistor reduces power consumption and provides a high impedance output. The CM3107 is housed in 8-lead SOIC and PSOP packages and is available with optional lead-free finishing. Applications Intel 865/845 Front Side Bus termination Single and dual DDR m...