O2Micro International OZ826
OZ826 is a DC/DC controller specifically developed to support the design of power supplies for AMD mobile microprocessors supporting the 6 bit VID codes (see Table 1). Its high efficiency under both light and heavy load conditions, DC accuracy, remote voltage sensing and excellent transient response make it a good choice for low voltage CPUs. The core topology is based on a constant-ripple current sync-buck controller with integrated drivers.FEATURES
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● Dual-phase DC-DC controller with integrated drivers 6 bit AMD VID codes compatible 1% output voltage accuracy 6V to 24V input supports 2s to 5s battery power Voltage Feed-Forward Compensation High efficiency, up to 94% High light-load efficiency: 80% at 200mA Non-audio skip mode Constant Ripple-Current topology facilitates optimum inductor size Supports 60A output current Ultra-fast transient recovery Adjustable load line support Slew control at start-up and OTF VID changes True differential output voltage remote sensing AMD compliant Power Good signal VIN & VDDA Undervoltage Lockout Protection Latched over-voltage protection Cycle-by-cycle Overcurrent protection with latched timeout Small, thin 5x5 QFN32 package
GENERAL DESCRIPTION
The voltage feed-forward compensation ensures a high rejection of input voltage transients. Overvoltage Protection (OVP) acts when the output voltage exceeds the 1.8V threshold. This protection condition is latched and the shutdown occurs.