OZ812
Overview
OZ812 is a DC/DC controller specially developed to design power supplies for DDR, DDR2 and DDR3 memories. OZ812 steps down the high battery voltage to low output voltages in the range of 0.5V to 2.75V and also provides the memory reference VTTREF and termination voltage VTT that accurately tracks VDDQ/2.
- DC-DC SMPS controller with integrated drivers for VDDQ Integrated Linear Regulator with 2A source and sink capability for VTT. High Efficiency up to 94% High light load efficiency; >85% at 100mA VDDQ accuracy ±1% Input voltage from 3V to 30V Output voltage o Preset values at 2.5V or 1.8V or o adjustable from 0.5V to 2.75V Output current - up to 15A Power Good signal ON/SKIP signal Soft-Start and Soft-stop Voltage Feed-Forward Compensation Constant ripple-current control allows optimum inductor size Dynamic voltage change support Output Protection: o Latched Over Voltage Protection o Latched Under Voltage Protection o Valley type Over Current Protection Input Protection: o Under Voltage Lock Out on VDDA o Under Voltage Lock Out on VIN
