Controller IC Chip - OZ813LN-A1-0-TR OZ813LN 813LN QFN24 chip for laptop - Integrated Laptop Chip (Code 1-CHIP0864)

Controller IC Chip - OZ813LN-A1-0-TR OZ813LN 813LN QFN24 chip for laptop- Integrated portable calculator chip(SKU.1-CHIP0864)

OZ813 is a DC/DC controller specially developed to design power supplies for next generation microprocessors, their peripherals and chipsets. OZ813 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 OZ813 suitable for supplying low voltage CPU peripherals, chipset cores, and graphics processors. OZ813 has two independent constant ripple-current buck controllers with powerful integrated drivers able to drive output currents up to 15A. Voltage Feed-Forward compensation assures high rejection of input voltage transients typically occurring when the AC adapter is plugged in or removed. Over Voltage Protection (OVP) acts when the output voltage exceeds the set voltage by more than 125mV. This protection condition is latched and initiates a ramp down of the output voltage. Under Voltage Protection (UVP) acts when the output voltage falls below the set voltage by more than 133mV. This protection condition is latched and initiates a ramp down of the output voltage. After an OVP or UVP event, the ON/SKIP pin should be toggled or VDDA/VIN cycled to restart the circuit. Both outputs are protected against overload by individual, valley current type, cycle-by-cycle (Over Current Protection) OCP circuits. The Under Voltage Lock Out circuit monitors both, VDDA and VIN and lets the controller operate only if VDDA > 4.3V and VIN > 2.5V. The Power Good signal is high as long as the output voltage is within +125mV/-133mV of the set voltage. At startup the output voltage ramps up in a controlled manner with a typical slew rate of 1V/ms and at shutdown the output voltage is ramped down in a controlled manner with the same slew rate.

Dual DC-DC SMPS controller with integrated drivers • Two constant ripple-current controllers • Constant ripple-current control allows optimum inductor size • High full load efficiency; up to 94% • High light load efficiency; >85% at 100mA • Vout accuracy; 1% or better • Input voltage; from 3V to 26V • Output voltage – adj. from 0.5V to 2.75V • Output current - up to 15A • Independent o Power Good signals o ON/SKIP signals • Soft-Start at start-up • Soft-stop at shutdown • Voltage Feed-Forward Compensation • User adjustable operating frequency • 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

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