CM3196

CM3196 2A Sink/Source DDR-I, -II Bus Termination Regulator Features Ideal for DDR-I, -II VTT applications Sinks and sources 2A for DDR-I, 0.6A for DDR-II Shutdown input to support ACPI states Operates down to 1.5V input voltage Integrated power MOSFETs Overcurrent protection Over temperature protection www.DataSheet4U.com Excellent accuracy VTT = VREF ± 30mV VTT = VDDQ/2 ± 2% 8-pin SOIC or PSOP package Lead-free versions available Product Description The CM3196 is a sinking and sourcing regulator specifically designed for DDR-I, -II VTT bus termination. The output voltage accurately tracks VDDQ/2. For DDR-I it can source and sink current up to 2A with a load regulation of 0.5%. This current adequately serves both single and dual channel DDR-I memory systems. For power conscious notebook applications, the CM3196 also operates from a VDDQ of 1.5V or 1.8V with less current drive. For DDR-II applications, the CM3196 provides up to 0.6A at 0.9V to drive the memory controller VTT. For boards which support Suspend to RAM (STR) functionality, the CM3196 provides a Shutdown (SD) pin. When SD is set low, VTT will be in tri-state mode, causing the output to go high impedance. In this mode, CM3196 power is saved by significantly reducing the quiescent current. VREF voltage remains VDDQ/2. The CM3196 provides overcurrent and over temperature protection. These features protect the chip from excessive heating due to high current and high temperature. The CM3196 is house...