O2Micro International OZ811
OZ811 is a DC/DC controller for the next generation of microprocessor power supplies, their peripherals and chipsets. OZ811 is a constant ripple-current buck controller with powerful integrated drivers able to drive output currents up to 30A.FEATURES
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● DC-DC SMPS controller with integrated drivers Constant ripple-current control allows optimum inductor size High Efficiency up to 94% High light load efficiency (>85% at 100mA) VOUT accuracy 1% Input voltage from 3V to 30V Output voltage - adjustable from 0.5V to 2.75V Output current - up to 30A User adjustable operating frequency Dynamic voltage change support Voltage Feed-Forward Compensation 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 Power Good signal ON/SKIP signal Soft-Start at start-up with OCT protection Soft-Stop at shutdown
GENERAL DESCRIPTION
OZ811 steps down the high battery voltage to low output voltages in the range of 0.5V to 2.75V. High efficiency, DC accuracy and excellent transient response make OZ811 the perfect choice for supplying low voltage CPU peripherals, chipset cores, and graphics processors.