EUP7116

The EUP7116 provides a complete power supply for both DDR/SSTL-2 and DDR2/SSTL-18 memory systems. It integrates a synchronous buck controller to generate VDDQ with output current up to 10A, a sourcing and sinking 3A LDO linear regulator to generate VTT, and a 10mA reference output buffer to generate VREF. The EUP7116 synchronous controller runs fixed 400kHz pseudo-constant frequency PWM with an adaptive on-time control that can be configured in Fast PWM Mode for ease of use and fastest transient response or in current mode to support ceramic output capacitors. The 3-A sink/source LDO maintains fast transient response only requiring 20-F (2 * 10 F) of ceramic output capacitance. In addition, the LDO supply input is available externally to significantly reduce the total power losses. The EUP7116 supports all of the sleep state controls placing VTT at high-Z in S3 (suspend to RAM) and discharging VDDQ, VTT and VTTREF (soft-off) in S4/S5 (suspend to disk). EUP7116 has all of the protection features including thermal shutdown and is offered in both a 20-pin TSSOP Thermal-pad package and 24-pin 4*4 TQFN.