Diodes Inc. reveal DDR Bus Termination Regulator
The required DDR memory termination supply is set via a simple external resistor network and is output via a standard MLCC ceramic capacitor that helps simplify assembly processes and reduce component cost and PCB size. The regulator is offered in a choice of space-saving 8-pin SO and PSOP packages and operates from a recommended input voltage range of 1.2V to 5.5V. Ambient operating temperature range is -40ºC to +85ºC.
To minimize inrush currents induced by large capacitive loads, the AP2303 offers a flexible soft-start facility, activated by a rising voltage on either VCNTL or VREFEN pins. In addition, to help reduce power consumption, a falling voltage applied to VIN, VCNTL or VREFEN pins causes the device to shutdown.
Current limit protection is provided on both source and sinks sides, with device output voltage dropping towards 0V once current exceeds 1.75A. Over-temperature protection is also included, with the AP2303 output turning off once junction temperature exceeds +160ºC.
